Best Cell Packs For Seedlings for Different Growing Needs

#1 · Best Overall

1. The Hydroponic City Seed Starter Trays

• Dimensions: 5.25 x 6.25 x 3.5 in
• Weight: 8.96 oz
• Material: Plastic
• Size: 36 Trays (216 Cells)

Best for: Reusable Small-Cell Seed Starts.

Why it ranks #1: Supplies 216 cells across 36 six-cell trays, with 1.5-inch-square by 2.25-inch-deep cells, drainage holes, and included plant stakes.

A 36-tray set supplies 216 individual cells, giving gardeners a substantial batch of planting spaces in compact six-cell units. Each cell is 1.5 inches square and 2.25 inches deep, a defined size for starting flowers, herbs, succulents, or vegetables before moving seedlings onward.

The 1.5-inch-square, 2.25-inch-deep cells provide individual spaces for seedlings, while drainage holes let excess water escape. Because the plastic trays are reusable, the 36 included units can serve successive rounds of starts rather than a single planting cycle. The six-cell format also keeps starts grouped in small sections, and the included plant stakes offer a way to mark plantings. This set suits gardeners who want many modestly sized cells, not deep-rooting room per seedling.

Skip it if you need extra-large, three-inch-deep cells for bigger root balls; AAAmercantile’s 300-cell deep trays offer that format.

Choose this set for a repeat-use seed-starting routine with many small individual cells and plant stakes for labeling. Its compact cell footprint suits modest starts; gardeners seeking extra-large root spaces should choose a deeper-cell format instead.

Listed on Amazon as: Seed Starter Trays, 216-Cell Seedling Starter Trays (36 Trays – 6 Cells Each) + Plant Stakes

#2 · Deepest Cells

2. AAAmercantile Deep Extra Large 300

• Dimensions: 7 x 5 x 3 in
• Weight: 16 oz
• Material: Plastic
• Size: Extra Large

Best for: Deep Root-Ball Seed Starts.

Why it ranks #2: Provides 300 cells in 50 six-cell trays, each 3 inches deep, with flexible plastic intended to make seedling removal easier.

Three-inch-deep cells give this 300-cell set its defining advantage: more depth for seedlings to form larger root balls before transplanting. The flexible plastic also makes depotting easier, so gardeners can handle established starts without relying on rigid cell walls.

Each cell measures 2.5 by 2.25 inches across and 3 inches deep, making this a roomier option for starts that benefit from deeper growing space. Flexible plastic is intended to ease seedling removal, while the six-cell trays keep plants in manageable groups. Six trays fit a standard 1020 tray, helping organize the set within that growing format. The listing describes the trays as generally single use, so this is better suited to seasonal batches than repeated reuse.

Skip it if you want trays explicitly described as reusable for successive seasons; RooTrimmer’s 80-pack four-cell trays are listed for reuse.

Pick these for a large batch of starts where three-inch depth and easier depotting matter more than repeat use. The 1020-tray fit helps with organization, but gardeners seeking season-after-season trays should consider a reusable option.

Listed on Amazon as: Seed Starter Trays 300 DEEP Extra Large Cells Total (50 Trays of 6 Cells Each)

#3 · High Cell Count

3. Industry Standard Grower's Supply 720

• Dimensions: 1.5 x 1.5 x 2.25 in
• Weight: 1.6 lb
• Material: Plastic
• Size: 1 Pack

Best for: Labeled Small-Cell Flower Starts.

Why it ranks #3: Offers 720 cells in 120 six-cell trays, with 1.5-inch-square by 2.25-inch-deep cells, drainage holes, and five plant labels.

Drainage holes in every cell are the defining practical feature of this 720-cell set, helping excess water leave the small planting spaces. The 1.5-inch-square cells are 2.25 inches deep, and five included plastic labels provide a way to identify selected plantings.

The 120 six-cell trays create a large supply of compact starts, while the 1.5-inch-square by 2.25-inch cells keep each seedling in its own space. Drain holes support water drainage, a useful feature for indoor or outdoor gardening and flower planting as listed. The square plastic planters are described as floor standing, so they can be set down individually. Five labels cover only a small portion of the 720 cells, making this set more suitable when labeling needs are limited or handled separately.

Skip it if you need labels for every small group of starts; AAAmercantile’s 90-cell set includes 15 stake labels, one for each tray.

Choose this set for a high count of small cells with drainage, especially for flower starts or indoor and outdoor gardening. It includes only five labels, so growers tracking many varieties will need another labeling plan.

Listed on Amazon as: Seedling Starter Trays, 720 Cells: (120 Trays; 6-cells Per Tray), Plus 5 Plant Labels

#4 · Largest Cell Count

4. Coconut Oasis 1440

• Dimensions: 20 x 10 x 2.25 in
• Weight: 1.45 kg
• Material: Plastic
• Size: 10 in x 20 in x 2.25 in

Best for: High-Volume Nursery Starts.

Why it ranks #4: Its 240 six-cell trays provide 1,440 cells for high-volume starting, and the package includes plant labels and drainage holes.

With 1,440 cells supplied as 240 six-cell trays, Coconut Oasis is the high-volume choice for gardeners or nurseries starting many seedlings at once. Flexible, durable soil plugs are intended to make removal easier, and included plant labels help keep individual plantings identified.

The 20-by-10-inch tray footprint provides a broad rectangular working area, while drainage holes support water escape during germination. Flexible, durable soil plugs help seedlings come out for transplanting, and the 240 separate trays let growers distribute starts across indoor or outdoor growing areas. Included labels help track what is planted. This quantity suits a substantial propagation workflow, though the listing does not specify individual cell dimensions, so buyers cannot use a stated cell size to plan spacing.

Skip it if you need a stated cell depth before choosing a tray; AAAmercantile’s deep-cell sets specify three-inch cells.

This set fits home gardeners and nurseries managing a large number of starts across indoor or outdoor locations. Its broad tray footprint and flexible plugs support transplant workflow, but it is less suited to buyers who require specified cell dimensions.

Listed on Amazon as: 1440 Cells Seedling Starter Trays for Seed Germination +10 Plant Labels (240, 6-Cell Trays)

#5 · Tray and Flat Set

5. RooTrimmer 20-Cell Plug Trays

• Dimensions: 15 x 11 x 3.2 in
• Weight: 11.2 oz
• Material: Plastic
• Size: 20 Cell Plug Trays + Flat Trays-5P

Best for: Bottom-Watering Deep-Cell Kits.

Why it ranks #5: Pairs five 20-cell plug trays with five flat nursery trays; the 3.5-inch-deep pots have large bottom openings for transplanting.

Five deep plug trays paired with five flat nursery trays give this RooTrimmer kit a two-part workflow for starting and collecting water. Its 20 cells per plug tray are 3.5 inches deep, and the large bottom openings are intended to make transplanting seedlings as whole plugs easier.

The 2.5-inch-square, 3.5-inch-deep pots provide room for longer germination periods, while the supplied flat trays have greater depth for bottom watering from the sides. Large 0.9-inch bottom openings help seedlings emerge as whole plugs during transplanting. Since the kit includes five plug trays and five flats, growers can pair the components for watering and collection rather than sourcing them separately. Its 15-by-11-inch tray footprint calls for corresponding shelf or bench space.

Skip it if you have limited bench space for 15-by-11-inch trays; Burpee’s 16-cell SuperSeed tray measures 11.5 by 10.5 inches.

This kit suits growers who want deep cells, whole-plug transplanting, and matching flats for bottom watering. Check that its 15-by-11-inch footprint fits your bench, since the paired tray workflow occupies a broad area.

Listed on Amazon as: RooTrimmer 2.5 inch Square Pots 3.5 inch Deep 20 Cell Seedling Trays with Water Collection Nursery Trays (15"x11"x3") for Seeds Starting and Transplanting(5 Sets)

#6

6. AAAmercantile Deep Extra Large 90

• Dimensions: 3 x 2.5 x 3 in
• Weight: 16 oz
• Material: Plastic
• Size: 2 1/2'' W x 2 1/4'' L x 3'' D

Best for: Deep Cells With Tray Labels.

Why it ranks #6: Delivers 90 cells in 15 six-cell trays, with 3-inch-deep flexible cells and 15 plastic stake labels for identifying trays.

Three-inch-deep cells give this 90-cell AAAmercantile set room for larger root balls before transplanting. Its flexible plastic is intended to ease depotting, and stake labels are included across the 15 six-cell trays, helping growers keep small batches identified as they develop.

Each cell measures 2.5 inches wide, 2.25 inches long, and 3 inches deep, giving seedlings a deeper root space than compact starter cells. Flexible plastic helps release plants during transplanting, while the six-cell layout keeps varieties grouped in small trays. The set includes 15 trays and is described as fitting six units inside a standard 1020 tray. Stake labels support identification, making this an organized option for growers prioritizing deep individual cells over a very high total count.

Skip it if you need more than 90 deep-cell starts in one set; AAAmercantile’s 300-cell deep trays provide the larger batch.

This set suits growers who want deeper root spaces, manageable six-cell groups, and labels for a smaller propagation run. It fits a standard 1020 tray arrangement, but its 90-cell total may not cover larger batches.

Listed on Amazon as: Seed Starter Trays 90 DEEP Extra Large Cells Total (15 Trays of 6 Cells Each) + 16 Labels

#7

7. RooTrimmer Reusable 4-Cell Trays

• Dimensions: 1 x 1 x 1 in
• Weight: 3.51 kg
• Material: Plastic
• Size: 4 Cells-80P

Best for: Reusable Standard-1020 Trays.

Why it ranks #7: Includes 80 reusable four-cell trays with drainage holes and air-pruning slits; the product is described as fitting standard 1020 trays.

Compatibility with standard 1020 trays makes these 80 reusable four-cell units easy to organize within a familiar seed-starting setup. RooTrimmer specifies BPA-free plastic, drainage holes, and air-pruning slits, combining repeat use with features intended to manage excess water and root growth.

Each unit holds four cells, so the 80-pack supports grouped starts while allowing growers to work with multiple small trays. Drainage holes let excess water escape, and air-pruning slits are intended to support root development. The trays are described as durable enough for season-after-season reuse, which can suit gardeners repeating the same propagation routine. Their stated fit with standard 1020 trays helps consolidate units in that format; the listing does not provide cell dimensions for planning individual plant spacing.

Skip it if you want 720 starts grouped in six-cell trays rather than four-cell units; Industry Standard Grower's Supply offers that higher-count format.

This pack fits growers who want reusable four-cell trays that organize within standard 1020 trays and include drainage and air-pruning features. Its four-cell capacity favors modular handling over minimizing the number of separate units.

Listed on Amazon as: RooTrimmer 80 Pack Reusable 4-Cell Seed Starter Tray for Seedlings, Easy Watering Seed Starting Trays with Drainage Holes for Seed Germination and Plant Start, Fits Standard 1020 Trays, Black

#8

8. Burpee SuperSeed 16-Cell Tray

• Dimensions: 11.5 x 10.5 x 2.5 in
• Weight: 13.44 oz
• Material: Silicone
• Size: 16 Cells

Best for: Flexible Pop-Out Indoor Starts.

Why it ranks #8: Its 16 flexible silicone cells pop out for transplanting, with molded drainage and aeration slots, labeled rows, and a Plant-o-Gram diagram.

Sixteen flexible, extra-large pop-out cells make the Burpee SuperSeed tray useful for indoor starts that need gentle removal at transplant time. Its alphanumeric row markings and included Plant-o-Gram diagram help gardeners identify seedlings, while the silicone construction is reusable and dishwasher safe.

The flexible silicone cells pop out to help reduce stress when moving seedlings into garden beds or patio pots. Molded corner slots improve drainage and soil aeration, while deep channels in the watering system support more controlled watering. Alphanumeric row labels paired with the Plant-o-Gram diagram make it easier to match seedlings to their positions. With 16 extra-large cells in an 11.5-by-10.5-inch tray, this is a compact, labeled setup rather than a bulk multi-tray supply.

Skip it if you need hundreds of cells for a large propagation run; Coconut Oasis supplies 1,440 cells in 240 trays.

Choose Burpee for a manageable indoor batch where flexible pop-out cells and organized labeling matter during transplanting. Its 16-cell capacity suits smaller runs, not gardeners who need hundreds of starts at once.

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

#9

9. DILLEN 1204-Style Inserts

• Weight: 16 oz
• Material: Plastic
• Size: 10 flats

Best for: Standard-Flat Four-Cell Inserts.

Why it ranks #9: The black plastic 1204-style inserts have four cells each and are described as filling 10 standard plant flats, though tray-format details are limited.

Twelve four-cell inserts fit one standard plant flat, letting growers arrange 48 seedlings within that familiar flat format. The 480 black plastic cells are supplied as 12 inserts per flat, making this a practical choice for filling multiple standard flats rather than handling loose individual pots.

The set contains 480 cells, enough to fill 10 standard plant flats according to the listing. Each insert holds four cells, and 12 inserts fit a standard flat to accommodate 48 seedlings in one organized area. That modular arrangement can simplify grouping and moving starts by flat. The black plastic construction is described as easy to use, but the listing gives no cell dimensions or drainage details, so buyers should base their choice on the stated flat capacity and insert layout.

Skip it if you want six-cell units and a listed drainage-hole feature; Industry Standard Grower's Supply offers 720 six-cell starts with drainage holes.

Choose these inserts when your workflow centers on standard plant flats and you want 48 starts grouped in each flat. Their four-cell layout is straightforward, but the listing leaves cell dimensions unspecified for spacing-sensitive plans.

Listed on Amazon as: 480 Seedling Cells – Fills 10 Trays – 1204 Style – Inserts

#10

10. Prudiut Biodegradable Peat Pots

• Dimensions: 4.6 x 6.49 x 1.96 in
• Material: natural pulp
• Size: 6.49 x 4.6 x 1.96 in

Best for: Biodegradable Transplant Pots.

Why it ranks #10: This 144-cell natural-pulp kit is the least conventional cell-pack choice here; its main distinction is pots designed to be planted with seedlings.

Biodegradable natural-pulp pots can be buried with the seedlings at transplanting, avoiding the need to remove each start from its pot. The kit supplies 144 cells across 12 trays, along with labels and transplant tools, for a complete set of planting accessories.

The natural-pulp material lets roots penetrate the pot walls, and the listing says the pot decomposes in soil after being planted. Burying the whole pot is intended to reduce transplant shock, making the transition from seedling tray to garden soil more direct. Twelve trays provide 144 cells, while included labels and transplant tools support identification and handling. This format suits gardeners who want a biodegradable transplant step rather than reusable plastic cells that must be emptied.

Skip it if you want plastic trays for repeated planting seasons; RooTrimmer’s 80-pack four-cell trays are specifically listed as reusable.

Pick this kit if you want to move seedlings into soil in their pots and value biodegradable natural pulp. It suits direct garden-bed transplanting, while growers seeking reusable cells should choose a plastic tray option.

Listed on Amazon as: Prudiut 144 Cells Seed Starter Tray, 12 Pack Biodegradable Peat Pots Kit