Best Reusable Seed Starting Trays for Indoor Seedlings

Best Reusable Seed Starting Trays

A strong reusable seed starting tray makes it easier to start seeds in organized cells and move seedlings without pulling hard on fragile roots. For gardeners who prioritize gentle transplanting, flexible silicone-bottom designs are the closest fit; gardeners starting many small seeds may prefer a multi-tray kit with a humidity dome. This roundup compares ten options, from Burpee’s 16 extra-large pop-out cells to kits with 120 or 200 cells, as well as open trays for flexible use.

Cell count alone does not determine the best choice: cell size, transplant design, drainage, and what comes in the kit all affect how well a tray suits your seeds and growing setup. Check the listed dimensions and contents against your available space before choosing.

Burpee SuperSeed 16-Cell is the best overall choice because its 16 extra-large silicone cells are flexible pop-outs designed to ease transplanting, and the tray includes a saucer. Molded corner slots support drainage and soil aeration, while labeled rows and an included Plant-o-Gram help identify seedlings. Choose it if you want fewer, roomier cells and root-friendly removal rather than the highest seed count.

For a larger batch or a kit with a dome, compare the multi-cell alternatives below.

Our Top Picks

Burpee SuperSeed 16-CellBest Overall

Burpee SuperSeed 16-Cell

Sixteen extra-large silicone pop-out cells, molded drainage slots, a saucer, and labeled rows make this a well-equipped choice for transplanting seedlings.

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Sondiko 80-Cell KitMost Modular

Sondiko 80-Cell Kit

Soft silicone cell bottoms aid transplanting, and the kit's rows can be used independently; listed details also include a dome and drainage holes.

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Ryscam 72-CellHigh Cell Count

Ryscam 72-Cell

Six trays provide 72 cells with flexible silicone bottoms and reinforced plastic, giving seed starters many cells and a way to release root balls.

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Compare reusable seed starting trays by cell style and setup

#ProductDimensionsSizeMaterial TypeBuy
111.5 x 10.5 x 2.5 in16 CellsSiliconeView on Amazon
29.4 x 7.4 x 5.5 in4 Pack—View on Amazon
3
Ryscam 72-Cell3. Ryscam 72-CellHigh Cell Count
6 x 1 x 4.6 in1 x 6 x 4.6 inPlastic, SiliconeView on Amazon
42 x 1.8 x 1 in—Plastic, SiliconeView on Amazon
5
ZSYWODFO 60-Cell5. ZSYWODFO 60-CellRoot-conscious batch starters
7.21 x 5.71 x 2.36 in5-Pack,with Base TraysPlastic, SiliconeView on Amazon
67.09 x 7.87 x 5.91 in48 CellsPolypropylene (PP), SiliconeView on Amazon
7
Epic Gardening 6-Cell7. Epic Gardening 6-CellAir-pruning reusable trays
4.92 x 3.3 x 2.52 in6 PackPlasticView on Amazon
8
MIXC 120-Cell Kit8. MIXC 120-Cell KitVent-adjustable batch growers
7.28 x 5.67 x 6.5 in12 Cell-10 Packs-Clear CoverPlasticView on Amazon
9
MIXC 200-Cell Kit9. MIXC 200-Cell KitHigh-volume dome propagation
14.57 x 9.02 x 5 in40-Cell 5-PackPlasticView on Amazon
10
Mr. Pen Seed Trays10. Mr. Pen Seed TraysOpen-tray indoor gardeners
17 x 10 x 2.4 in5 PackPlasticView on Amazon

Detailed Reviews: Best Reusable Seed Starting Trays

Burpee SuperSeed 16-Cell

#1 · Best Overall

1. Burpee SuperSeed 16-Cell

  • Dimensions: 11.5 x 10.5 x 2.5 in
  • Size: 16 Cells
  • Material Type: Silicone

Best for: Large-cell transplant gardeners.

Why it ranks #1: Sixteen extra-large silicone pop-out cells, molded drainage slots, a saucer, and labeled rows make this a well-equipped choice for transplanting seedlings.

Sixteen extra-large flexible silicone cells give this Burpee tray room for seedlings that need more space at the starting stage. The cells pop out to ease transplanting, while alphanumeric row labels and an included Plant-o-Gram help keep varieties identified as you move from sowing to garden planting.

Soft, food-grade silicone cells can be gently pressed out, helping release seedlings with their root balls intact when transplant time arrives. Molded corner slots provide drainage and soil aeration, while deep channels support watering across the tray. Alphanumeric row labels paired with the Plant-o-Gram make it easier to track different sowings. A saucer is included, and the tray is dishwasher safe, giving you a way to contain watering and simplify cleanup between planting rounds.

Pros
  • 16 extra-large flexible pop-out cells
  • Alphanumeric rows and included Plant-o-Gram for tracking seedlings
  • Molded corner slots support drainage and aeration
  • Dishwasher-safe silicone tray includes a saucer
Cons
  • Sixteen cells offer less sowing capacity than a multi-tray kit.

Skip it if you need to start dozens of seedlings in one setup; MIXC’s 200-cell mini propagator kit offers substantially more cells.

Choose it for indoor sowing when larger starting cells and careful variety tracking matter more than maximizing cell count. The 16-cell layout suits a focused planting session, not a high-volume batch.

Full product details
BrandBurpee
ColorGreen
Included ComponentsSaucer
Item Dimensions11.5 x 10.5 x 2.5 inches
Dimensions11.5"D x 10.5"W x 2.5"H
Item Weight13.44 ounces
ManufacturerBurpee
Part Number93412
MaterialSilicone
Model Number93412
Special FeaturesDishwasher Safe, Drainage Hole, Reusable
Product StyleStarter Tray
Size16 Cells
Special FeatureDishwasher Safe, Drainage Hole, Reusable
StyleStarter Tray

Listed on Amazon as: Burpee SuperSeed 16 XL Cell Reusable Seed Starting Tray for Seedlings

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Sondiko 80-Cell Kit

#2 · Most Modular

2. Sondiko 80-Cell Kit

  • Dimensions: 9.4 x 7.4 x 5.5 in
  • Size: 4 Pack

Best for: Flexible, modular sowing.

Why it ranks #2: Soft silicone cell bottoms aid transplanting, and the kit's rows can be used independently; listed details also include a dome and drainage holes.

Removable single-row sections let you use only the planting space you need, rather than filling a fixed-size tray for every sowing. Sondiko’s soft silicone cell bases also press seedlings upward for transplanting, while its kit includes a dome and can be used with a heat mat and plant light.

The trays are partitioned into five rows, so individual sections can be removed to create more room when a full planting layout is unnecessary. Each cell’s soft silicone base helps release seedlings with roots and soil intact, making transplanting gentler. The kit’s dome provides a covered starting setup, and verified compatibility with a heat mat and plant light allows it to fit into a controlled indoor growing arrangement. The product can plant up to 20 seeds simultaneously.

Pros
  • Five independently usable rows
  • Soft silicone cell bases aid root-preserving removal
  • Dome included for a covered starting setup
  • Compatible with a heat mat and plant light
Cons
  • The stated simultaneous planting capacity is 20 seeds.

Skip it if you need more than 20 seeds in one sowing; MIXC’s 200-cell mini propagator kit has much greater stated capacity.

A good fit for indoor gardeners who want to divide sowings into smaller sections and use supplemental heat or light. Its 20-seed capacity is the key boundary for larger planting plans.

Full product details
BrandSondiko
ColorGreen
Item Dimensions9.4 x 7.4 x 5.5 inches
Part NumberSeed Starter Tray
Model NumberSeed Starter Tray
Special FeaturesAeration & Soft Silicone Cells, Dome, Drainage Hole, Lightweight, Standalone Single-Row Pallet
Size4 Pack
Special FeatureAeration & Soft Silicone Cells, Dome, Drainage Hole, Lightweight, Standalone Single-Row Pallet

Listed on Amazon as: Sondiko Seed Starter Tray with Soft Silicone Cells, 80-Cell Starter Kit

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Ryscam 72-Cell

#3 · High Cell Count

3. Ryscam 72-Cell

  • Dimensions: 6 x 1 x 4.6 in
  • Size: 1 x 6 x 4.6 in
  • Material Type: Plastic, Silicone

Best for: Flexible 72-cell transplanting.

Why it ranks #3: Six trays provide 72 cells with flexible silicone bottoms and reinforced plastic, giving seed starters many cells and a way to release root balls.

Flexible pop-out cells give this six-piece Ryscam kit a root-conscious route from seed tray to pot or garden bed. The silicone bottoms can be gently pushed to release an entire root ball, while the 72-cell total provides capacity for a broad indoor seed-starting batch.

Each tray combines silicone with reinforced plastic, and its flexible bottom is meant to release seedlings without tugging or tearing roots. That can make the move into larger pots or garden beds gentler than pulling a seedling from a rigid cell. Across the six-piece kit, 72 cells give you room to start multiple varieties in one cycle. The supplied information identifies the trays as durable and reusable, but does not specify a dome or other included growing accessories.

Pros
  • 72 cells across six trays
  • Flexible bottoms release root balls
  • Silicone and reinforced plastic construction
  • Reusable tray design
Cons
  • No dome is listed among the included components.

Skip it if you want a covered humidity setup included; Ryscam’s 48-cell kit comes with a lid and planter tools.

Choose this kit for a sizeable sowing batch where flexible-bottom transplanting is the main priority. Its 72 cells cover multiple starts, but growers seeking a dome should consider a kit that lists one.

Full product details
BrandRyscam
Capacity72 load
ColorGreen
Included ComponentsTray
Item Dimensions6 x 1 x 4.6 inches
Dimensions6"D x 1"W x 4.6"H
Item Weight16 ounces
Manufacturerryscam
MaterialPlastic, Silicone
Special FeaturesDurable
Product StyleModern
Size1 x 6 x 4.6 inches
Special FeatureDurable
StyleModern

Listed on Amazon as: 6pcs Reusable Seed Starter Kit, 72 Cells Seed Starter Trays, Silicone Seedling Starter Trays for Starting Plant Seeds with Flexible pop-Out Cells, Indoor Gardening Plant Germination Trays

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Hanaoyo 60-Cell Kit

#4 · Flexible Cells

4. Hanaoyo 60-Cell Kit

  • Dimensions: 2 x 1.8 x 1 in
  • Material Type: Plastic, Silicone

Best for: Small-batch transplanting.

Why it ranks #4: Five trays provide 60 cells, with 12 flexible pop-out cells per tray designed to reduce root disturbance during transplanting.

Twelve flexible pop-out cells per tray make Hanaoyo’s five-tray kit useful for dividing sowings into manageable batches. Its silicone cells can be bent and popped out at transplant time, helping protect seedlings during transfer, while drainage holes support water movement through the starting trays.

The five trays provide 60 cells in total, divided into 12-cell units that can keep different sowings separate. Flexible silicone cells are intended to pop out gently, reducing disturbance to roots when seedlings move to an outdoor garden. Drainage holes are listed as a special feature, a practical detail for managing excess water during indoor starting. The product description also says the kit can standardize sowing and encourage neatly emerged seedlings, making repeated planting tasks easier to organize.

Pros
  • Five trays with 12 cells apiece
  • Flexible pop-out silicone cells for transplanting
  • Drainage holes are specified
  • Separate trays help organize sowings
Cons
  • The 12-cell tray format means more units to handle for a large sowing.

Skip it if you want one large tray for handling a high-volume sowing; MIXC’s 200-cell kit consolidates many starts in its propagator setup.

This kit suits gardeners who prefer small, separated sowing batches and flexible-cell transplanting. Its 12-cell units are easy to organize by batch, but require handling more trays when starting many seedlings.

Full product details
BrandHanaoyo
ColorBlue-5 Pcs
Item Dimensions2 x 1.8 x 1 inches
Dimensions2"D x 1.8"W x 1"H
Item Weight4.8 ounces
ManufacturerHanaoyo
MaterialPlastic, Silicone
Special FeaturesDrainage Hole
Product StyleGarden
Special FeatureDrainage Hole
StyleGarden

Listed on Amazon as: Hanaoyo 5 PCS Reusable Seed Starter Tray, 60 Cells Seed Starter Kit with Flexible Pop-Out Cells, Seedling Starter Trays for Seed Starter, Indoor Greenhouse Seeding Planting Growing

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ZSYWODFO 60-Cell

#5

5. ZSYWODFO 60-Cell

  • Dimensions: 7.21 x 5.71 x 2.36 in
  • Size: 5-Pack,with Base Trays
  • Material Type: Plastic, Silicone

Best for: Root-conscious batch starters.

Why it ranks #5: Five trays offer 60 cells with flexible silicone bases and included saucers, combining root-ball release with a multi-tray format.

Flexible silicone cell bottoms let you press seedlings out with their root systems intact, addressing the stuck-seedling problem that can complicate transplanting. ZSYWODFO supplies five 60-cell trays with base trays, giving gardeners multiple reusable sections for starting a larger batch and moving plants into pots or garden beds.

Each cell’s soft silicone bottom releases seedlings when pressed, helping avoid the tearing and stem damage associated with rigid cells during transfer. The trays combine silicone with reinforced plastic, and the listing identifies them as reusable, supporting repeated sowing rather than single-season use. Five trays and base trays provide a multi-section setup for organizing starts. At 60 cells per tray, the set suits a substantial seedling run, though its individual trays measure about 7.21 by 5.71 inches.

Pros
  • Five trays, each with 60 cells
  • Flexible silicone bottoms help release intact root systems
  • Reinforced plastic and silicone construction
  • Base trays are included
Cons
  • Each tray’s footprint is about 7.21 by 5.71 inches, limiting space per section.

Skip it if you need wide trays for sprawling seedling arrangements; Mr. Pen’s 17-by-10-inch trays provide a larger open surface.

Consider this set for growers starting many seedlings who value flexible-bottom transplanting and separate base trays. Check that its compact individual tray footprint matches your shelf and seed-starting workflow.

Full product details
BrandZSYWODFO
Capacity12 cups
ColorGreen
Included ComponentsCells seed trays, Saucer
Item Dimensions7.21 x 5.71 x 2.36 inches
Dimensions7.21"D x 5.71"W x 2.36"H
Item Weight0.65 kg
ManufacturerZSYWODFO
Part Number744173045184
MaterialPlastic, Silicone
Model Number744173045184
Special FeaturesReusable, Silicone
Product StyleContemporary
Size5-Pack,with Base Trays
Special FeatureReusable, Silicone
StyleContemporary

Listed on Amazon as: 5 Pack 60-Cell Flexible Silicone Seed Starter Trays for Easy Transplant

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Ryscam 48-Cell Kit

#6 · Best Dome Kit

6. Ryscam 48-Cell Kit

  • Dimensions: 7.09 x 7.87 x 5.91 in
  • Size: 48 Cells
  • Material Type: Polypropylene (PP), Silicone

Best for: Covered 48-cell starts.

Why it ranks #6: The 48-cell kit includes a lid, labels, and planter tools; silicone bottoms, drainage holes, and a listed BPA-free feature add practical detail.

A four-inch-high humidity dome gives this 48-cell Ryscam kit a covered starting setup for indoor seed sowing. Flexible silicone bottoms support seedling removal, and the included labels, planter tools, and lid make it a more complete work area for beginning a batch rather than a tray alone.

The lid creates a covered environment over the 48-cell tray, while the flexible silicone bottoms can be pressed to help release seedlings for transplanting. Drainage holes are listed, giving excess water a route out of the cells during watering. Labels and planter tools are included alongside the trays, so you can identify starts and work with the kit’s supplied accessories. Its polypropylene-and-silicone construction is listed as BPA-free, and the product is described as reusable and dishwasher safe.

Pros
  • 48-cell capacity with a four-inch-high lid
  • Flexible silicone bottoms support seedling removal
  • Labels and planter tools included
  • BPA-free, reusable, dishwasher-safe construction
Cons
  • The included four-inch-high lid may limit use where overhead clearance is tight.

Skip it if you have little vertical clearance above your seed trays; Burpee SuperSeed’s 2.5-inch-high tray has a lower listed profile.

Choose this kit for indoor sowing when a dome, 48 cells, and included labeling tools suit your workflow. Account for the lid’s four-inch height when placing it on shelves or under lights.

Full product details
BrandRyscam
ColorGreen
Included Components48 cell seed starter trays, Labels, Lid, Planter tools
Item Dimensions7.09 x 7.87 x 5.91 inches
Dimensions7.09"D x 7.87"W x 5.91"H
Item Weight16 ounces
ManufacturerRyscam
Manufacturer Warranty Description365 days.
MaterialPolypropylene (PP), Silicone
Special FeaturesBPA-FREE, Drainage Hole, Flexible silicone bottom, Lightweight
Product StyleClassic
Size48 Cells
Special FeatureBPA-FREE, Drainage Hole, Flexible silicone bottom, Lightweight
StyleClassic

Listed on Amazon as: Seed Starter Tray, 48 Cells Indoor Seed Starter Kit, Flexible Silicone Designed Seedling Starter Trays, Germination Tray with Humidity Dome & Lids(4in Height), Reusable & Dishwasher Safe, BPA-FREE

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Epic Gardening 6-Cell

#7

7. Epic Gardening 6-Cell

  • Dimensions: 4.92 x 3.3 x 2.52 in
  • Size: 6 Pack
  • Material Type: Plastic

Best for: Air-pruning reusable trays.

Why it ranks #7: Six reusable trays made from recycled, UV-resistant plastic have open bases and air-pruning slots, suiting gardeners who prefer rigid cells.

Air-pruning slots on all four corners and an open base are intended to support healthy roots in Epic Gardening’s six-cell trays. The set includes six reusable trays made from recycled, UV-resistant American plastic, combining a small planting unit with a material and construction focus on repeated use.

Each tray holds six cells measuring 1 9/16 inches square by 2 1/4 inches high, making the individual units suited to smaller, separated sowings. Air-pruning slots at each cell’s four corners and an open base are intended to discourage root circling and support root development. The recycled, UV-resistant American plastic is presented for long-term reuse, so the six trays can serve repeated planting rounds. This format prioritizes root features and durability over high cell counts per tray.

Pros
  • Six trays with six cells each
  • Air-pruning slots on all four cell corners
  • Open base supports the stated root-health approach
  • Recycled, UV-resistant American plastic
Cons
  • Six cells per tray require more units for a large sowing.

Skip it if you need a high cell count in each unit; Sondiko’s kit can plant up to 20 seeds simultaneously.

Consider these trays for gardeners who want small batches, air-pruning features, and reusable UV-resistant plastic. The six-cell format is a deliberate fit for separated starts, not a consolidated high-volume sowing.

Full product details
BrandEpic Gardening
Capacity36.64 cubic inches
ColorTerracotta
Included Components6 Packs
Item Dimensions4.92 x 3.3 x 2.52 inches
ManufacturerEpic Gardening
MaterialPlastic
Special FeaturesUV Resistant
Product StyleGarden
Size6 Pack
Special FeatureUV Resistant
StyleGarden

Listed on Amazon as: 6-Cell Seed Starter Tray – 6 Trays – Terracotta

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MIXC 120-Cell Kit

#8

8. MIXC 120-Cell Kit

  • Dimensions: 7.28 x 5.67 x 6.5 in
  • Size: 12 Cell-10 Packs-Clear Cover
  • Material Type: Plastic

Best for: Vent-adjustable batch growers.

Why it ranks #8: Ten 12-cell trays include a humidity dome with adjustable vents and drainage holes, though the listed cells are rigid plastic rather than flexible silicone.

Adjustable vents in the humidity dome let you regulate the seedling environment across this MIXC kit’s 120 cells. Ten 12-cell trays provide separate units for organizing sowings, while drainage holes in the trays help manage excess water during indoor seed starting.

The kit pairs a humidity dome with ten trays, each holding 12 cells, for a covered setup that can be divided into smaller sowing groups. Adjustable vents let you regulate temperature and humidity as seedlings grow, while bottom drainage holes help water move out of the cells. Transparent construction supports monitoring growth without lifting the cover. The 120-cell total suits gardeners who want many starts organized into individual trays rather than one undivided planting area.

Pros
  • 120 cells arranged as ten 12-cell trays
  • Humidity dome has adjustable vents
  • Drainage holes support water management
  • Transparent design helps monitor seedlings
Cons
  • The kit’s plastic trays do not have flexible silicone pop-out cell bottoms.

Skip it if you prioritize silicone-bottom removal for transplanting; Ryscam’s 72-cell flexible pop-out kit offers that feature.

A practical match for gardeners starting many seedlings under a vented dome and sorting them into separate groups. Choose it for environmental adjustment and monitoring, not silicone-assisted root-ball removal.

Full product details
BrandMIXC
Capacity3.05 liters
ColorGreen
Included Componentshumidity dome, seedling starter trays
Item Dimensions7.28 x 5.67 x 6.5 inches
Dimensions7.28"D x 5.67"W x 4.37"H
Item Weight16 ounces
ManufacturerMIXC
MaterialPlastic
Special Featureshumidity dome, reusable seed starting trays, seed starter, seed starter kit, seed starter tray
Product StyleGarden
Size12 Cell-10 Packs-Clear Cover
Special Featurehumidity dome, reusable seed starting trays, seed starter, seed starter kit, seed starter tray
StyleGarden

Listed on Amazon as: MIXC 10 Pack Seed Starter Tray, 120Cell Stater Kit with Humidity Dome Green

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MIXC 200-Cell Kit

#9

9. MIXC 200-Cell Kit

  • Dimensions: 14.57 x 9.02 x 5 in
  • Size: 40-Cell 5-Pack
  • Material Type: Plastic

Best for: High-volume dome propagation.

Why it ranks #9: The five-tray kit offers 200 cells, clear plastic for viewing growth, and adjustable dome vents; its small 1.5-inch cells suit small seeds.

Two hundred cells across five trays give the MIXC mini propagator kit room for a large batch of small seeds. Transparent plastic makes seedlings visible without disturbing the setup, while adjustable dome vents let you regulate the growing environment’s humidity and temperature as starts develop.

The transparent cell trays help you monitor growth without removing the cover or interrupting the process. Adjustable vents in the humidity dome let you change airflow and manage temperature and humidity around the seedlings. Cells measure 1.5 by 1.5 by 2 inches and are described as suitable for small seeds, so this kit favors compact starts rather than large seedlings. Its five-tray arrangement and 200-cell capacity can support a sizable propagation run in a controlled, covered setup.

Pros
  • 200 cells across five trays
  • Transparent trays allow visual monitoring
  • Adjustable dome vents regulate humidity and temperature
  • Cell size is specified for small seeds
Cons
  • The 1.5-by-1.5-by-2-inch cells are specified as suitable for small seeds.

Skip it if you are starting seedlings that need larger cells; Burpee SuperSeed’s 16 extra-large cells offer more room per start.

Best suited to growers sowing many small seeds who want visual monitoring and adjustable humidity control. The small cell dimensions are an important fit consideration for seedlings needing more starting space.

Full product details
BrandMIXC
Capacity14.96 liters
ColorGreen
Included ComponentsLabel
Item Dimensions14.57 x 9.02 x 5 inches
Dimensions14.57"D x 9.02"W x 5"H
Item Weight1187 g
ManufacturerMIXC
Part NumberNo1
MaterialPlastic
Model NumberNo1
Special FeaturesLightweight
Product StyleGarden
Size40-Cell 5-Pack
Special FeatureLightweight
StyleGarden

Listed on Amazon as: MIXC 5 Pack Seed Starter Tray, 200Cell Mini Propagator Greenhouse Grow Kit

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Mr. Pen Seed Trays

#10

10. Mr. Pen Seed Trays

  • Dimensions: 17 x 10 x 2.4 in
  • Size: 5 Pack
  • Material Type: Plastic

Best for: Open-tray indoor gardeners.

Why it ranks #10: Five sturdy, reusable 17-by-10-inch trays contain soil, fertilizer, and water, but they are open trays without individual seed-starting cells.

A 17-by-10-inch open tray gives Mr. Pen users a broad surface for keeping soil, fertilizer, and water contained during indoor or outdoor growing. The five sturdy plastic trays are reusable, making this a straightforward option for gardeners who want open planting trays rather than individual cells and domes.

The wide, 2.4-inch-deep trays are intended to contain soil, fertilizer, and water, helping keep growing materials together as you manage plants. Their sturdy plastic construction is described as durable and reusable, so the five trays can be used again for indoor or outdoor growing. Because this is an open-tray format rather than a divided cell kit, it provides a flexible surface for arranging planting materials but does not offer individual pop-out cells for transplanting.

Pros
  • Five reusable plastic trays
  • 17-by-10-inch open surface
  • 2.4-inch tray depth
  • Helps contain soil, fertilizer, and water
Cons
  • Open trays have no individual cells for separating seedlings.

Skip it if you need individual cells for organized seedling starts; Hanaoyo’s five trays provide 12 cells each with flexible pop-out bottoms.

A fit for gardeners who need reusable open trays to contain growing materials indoors or outdoors. It is not the choice for cell-by-cell sowing or root-ball release during transplanting.

Full product details
BrandMr. Pen
Capacity6.7 liters
ColorBlack
Included ComponentsTray
Item Dimensions17 x 10 x 2.4 inches
Dimensions17"D x 10"W x 2.4"H
Item Weight16 ounces
ManufacturerMr. Pen
MaterialPlastic
Special FeaturesLightweight
Product StyleModern
Size5 Pack
Special FeatureLightweight
StyleModern

Listed on Amazon as: Mr. Pen- Seed Starter Trays, 5 Pack, 17"x10"x2.4"

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Avoid transplant shock from stuck seedlings

A flexible cell bottom can help release a root ball, but it does not eliminate the need to handle seedlings carefully. Burpee SuperSeed 16-Cell, Sondiko 80-Cell Kit, Ryscam 72-Cell, Hanaoyo 60-Cell Kit, ZSYWODFO 60-Cell, and Ryscam 48-Cell Kit all list silicone or flexible pop-out bottoms. These features address a common tray problem: seedlings can resist removal from rigid cells, making it harder to lift them without disturbing roots.

Even with a pop-out design, support the seedling and its soil as it comes free rather than pulling on the stem. Rigid-cell options have different strengths: Epic Gardening 6-Cell lists open bases and air-pruning slots, while the MIXC kits emphasize adjustable humidity vents.

Match the release method to how you plan to transplant, and check that cells are ready before trying to remove a seedling.

Check cell format against your growing space

A high cell count does not guarantee that a tray fits your seeds, workspace, or lighting setup. The MIXC 200-Cell Kit specifies 1.5-by-1.5-by-2-inch cells and describes them as suitable for small seeds, while Burpee SuperSeed 16-Cell uses extra-large cells. Those formats suit different starting plans, so do not choose by total count alone.

Tray dimensions also vary: Burpee lists an 11.5-by-10.5-inch footprint, Mr. Pen Seed Trays measure 17 by 10 inches, and MIXC 200-Cell Kit lists 14.57 by 9.02 inches.

Confirm shelf or heat-mat dimensions before ordering, and account for the dome where one is included. The Sondiko listing describes individual rows and use with a heat mat and plant light, but does not provide cell dimensions in the supplied specifications. For that kit, verify the fit you need rather than assuming the tray’s overall listed dimensions describe each component.

How to Choose Reusable Seed Starting Trays

Cell count and cell size

Choose a cell count that matches how many seedlings you intend to start and how much room each needs. The listed formats range from Epic Gardening 6-Cell’s six trays of six cells to Ryscam 72-Cell, Sondiko 80-Cell Kit, and MIXC 200-Cell Kit. Burpee SuperSeed 16-Cell instead emphasizes extra-large cells, while MIXC 200-Cell Kit specifies cells measuring 1.5 by 1.5 by 2 inches and says they suit small seeds.

More cells suit gardeners sowing many small seeds; fewer or larger cells may be a better fit when seedlings need more room. Verify dimensions because the listings do not provide individual cell measurements for every product.

Transplant release and construction

Look for a release design that suits how gently you want to move seedlings. Several options use flexible silicone bottoms: Burpee SuperSeed 16-Cell has soft silicone pop-out cells, while Ryscam 72-Cell combines silicone with reinforced plastic. Hanaoyo 60-Cell Kit lists 12 flexible pop-out cells per tray.

By contrast, Epic Gardening 6-Cell uses recycled, UV-resistant plastic with open bases and air-pruning slots, and the MIXC trays are clear plastic. Flexible-bottom trays favor gardeners who want to press seedlings out with their soil and roots intact; rigid formats may appeal to those who prefer a conventional tray and, in MIXC’s case, clear sides for monitoring.

Reusable construction is listed for these options, but the specific materials and designs differ.

Dome, drainage, and kit contents

Choose a kit whose included parts fit your germination routine, and distinguish a dome from a basic tray. Ryscam 48-Cell Kit includes a lid, labels, and planter tools; MIXC 120-Cell Kit includes a humidity dome with adjustable vents and drainage holes. Sondiko 80-Cell Kit also lists a dome and drainage holes, while Burpee SuperSeed 16-Cell includes a saucer and molded drainage slots.

Mr. Pen Seed Trays are open trays without individual cells, and Epic Gardening 6-Cell lists an open base rather than a dome.

Dome-equipped sets suit gardeners who want a covered starting setup, while gardeners with separate humidity control may prefer a simpler tray. Confirm whether the listing includes a base, saucer, labels, or other accessories rather than assuming all kits supply them.

Which Reusable Seed Starting Tray Should You Choose?

Choose Burpee SuperSeed 16-Cell if you want extra-large flexible cells, drainage slots, and a saucer in one compact starter tray. For a more modular setup, Sondiko 80-Cell Kit has soft silicone bottoms and rows that can be used separately. If you need many small-seed positions, compare Ryscam 72-Cell with MIXC 200-Cell Kit; the latter specifies 1.5-inch-wide cells and adjustable dome vents.

Ryscam 48-Cell Kit is the pick for buyers wanting a 48-cell set with a lid, labels, and tools. Choose Epic Gardening 6-Cell for reusable rigid cells with open bases and air-pruning slots.

If you need broad trays rather than individual cells, Mr. Pen Seed Trays provide five 17-by-10-inch open trays.

Frequently Asked Questions

How deep should seed starting cells be for different kinds of seeds?

Cell depth depends on how long seedlings will stay in the tray and how much root space they need. Small, quick-growing seedlings can start in shallow cells; plants that grow longer before transplanting benefit from deeper cells. Follow each seed packet’s planting guidance, and avoid leaving roots cramped before moving seedlings.

When should seedlings be moved from a starter tray into larger pots or outdoors?

Move seedlings when they have developed sturdy stems and several sets of true leaves, or when roots begin filling their cells. Before planting outdoors, gradually expose them to outdoor conditions over several days. Check the seed packet for timing and local frost guidance, since readiness and planting dates vary by plant and climate.

Do seed starting trays need a humidity dome or a heat mat?

Neither is necessary for every seed. A humidity dome can help retain moisture during germination, while a heat mat can support seeds that need warm soil; follow the seed packet’s recommendations. Remove the dome once seedlings emerge and monitor moisture and temperature so seedlings do not stay overly wet or warm.

How many cells should a seed starting tray have?

Choose cell count based on how many plants you plan to start and the space available. Fewer, roomier cells suit buyers who want more space per seedling, while high-count trays provide more individual starting positions. Also consider whether you prefer separate cells, flexible pop-outs, or broad open trays.

What should I consider when choosing a reusable seed starting tray?

Consider cell size and depth, drainage, transplanting style, and whether a dome, saucer, or labels are useful for your setup. Flexible cells can make removal easier, while open trays serve a different purpose from individual-cell kits. Check the product details for cleaning guidance before reusing a tray.

Final Words

For most gardeners who value easy transplanting over maximum capacity, the Burpee SuperSeed 16-Cell is the clearest choice: its extra-large flexible cells, drainage slots, and saucer suit a compact start. Choose a higher-cell-count option for more seed positions, or a kit with a dome if you want that included. For broad starts without individual cells, consider the open-tray set.

Match cell format to your seedlings and available space.

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