Best seedling starter trays

Seedling starter trays hold in moisture and warmth during the germination period, giving your plants their best shot at life. These are our favorites.

Best seedling starter trays
(Image credit: @Annie Spratt on Unsplash)

Starting a garden requires a combination of patience and timing. Really, having a "green thumb" has little bearing on whether your seedlings thrive or fail to pop through the soil.

The best seedling starter trays give you a leg up when planting from seeds. Some aid in drainage, others in aeration, and all allow you to plant long before the sun warms the earth outside, giving you a head start on your flowerbeds or produce and herb gardens.

No matter what type of garden you're planning, you can benefit from a seedling starter tray. Whether you want a reusable tray that's ultra-durable and will last a lifetime or an eco-friendly peat seedling starter tray, we have opinions. These are the best seedling starter trays this year.

Staff pick

24 black seedling starter trays and plant labels

(Image credit: 9GreenBox)

9GreenBox seedling starter trays

Grow and mark your specimens

This kit comes with 24 seedling starter trays and five plant labels to keep your garden tidy and organized.

Pros:

  • 144 total cells
  • Includes five plant labels
  • Generous drain holes
  • Good bargain for the price
  • Warms soil to room temperature

Cons:

  • Best for one-use only

The 9GreenBox seedling starter kit comes with 24 trays, each containing six cells. Five plastic plant labels are also included to help you remember what you've planted. The trays are a thin plastic that lends itself well to bringing soil up to room temperature but may be difficult to use season after season. We love the large drainage holes on the bottom and the rectangular shape that stores plants side by side while nature does its thing.

Best humidity dome

MIXC seed starter trays

(Image credit: Amazon)

MIXC seed starter trays

Regulate temperature like a pro

Adjustable vents let you control the temperature and moisture in these reusable seed starter trays.

Pros:

  • Reusable
  • Clear domes let you see growth
  • Adjustable vents
  • Drain holes
  • Plant labels included

Cons:

  • Lid doesn't snap to base

Take complete control of seedlings with this seed starter kit from MIXC. You'll get 120 cells to plant whatever you like, plus a humidity dome and ten plant labels. You can use these sturdy trays season after season for growing everything from vegetables to herbs to flowers. And we love the humidity dome, complete with adjustable vents. Grab these in black, green, white, or pink.

Best accessories

Gardzen garden propagator set

(Image credit: Amazon)

Gardzen garden propagator set

Includes dibber and widger

This five-tray set includes 200 cells, snap-on lids, and two garden tools for planting.

Pros:

  • Snap-on lid
  • 200 cells
  • Garden tools included
  • Great value
  • Larger cells

Cons:

  • Not recyclable plastic
  • Thin materials

The smaller cells on some seedling starter trays mean you need to replant sprouts as soon as they take root. The Gardzen garden propagator set has bigger cells than other kits so that you can move plants straight from the trays to the garden, and you never need to worry about replanting things numerous times. This five-pack set comes with snap-on lids, 200 cells, plus a dibber and widger for planting. When you have a lot to put in the ground, this is the best seedling starter tray for you.

Best natural

JOLLY GROW seed starter peat pots

(Image credit: Amazon)

JOLLY GROW seed starter peat pots

Earth-friendly design

These all-natural, biodegradable peat pots do away with transplant shock while helping strong roots take hold.

Pros:

  • Biodegradable
  • 50 cells
  • Plant markers included
  • Pots are plantable

Cons:

  • Plant markers are not biodegradable

If you prefer organic gardening and starting plants from seeds, you'll want this set of five seeding starter trays from JOLLY GROW. Each tray includes ten cells, all of which are plantable, eliminating transplant shock and the need to replant continually. These all-natural peat pots come with ten plastic plant markers so you can keep track of what's sprouting and where.

Best basic

T.O. Plastics 1020 plant trays

(Image credit: T.O. Plastics)

T.O. Plastics 1020 plant trays

Heavy-duty for advanced gardening

These thick plastic rectangular trays are ideal for seed starting, microgreens, and hydroponic growing.

Pros:

  • Sturdy build
  • Reusable
  • Great for sprouts and veggies
  • Stackable
  • Perfect for hydroponic watering

Cons:

  • No drain holes
  • More expensive than other options

The heavy-duty TO Plastics trays lack drain holes. That's intentional. They're useable with small pebbles or food-safe gravel if drainage is necessary but are ideal for hydroponic watering, which is done from the bottom up. This set comes with ten large plastic trays that work well with herbs and microgreens. They're affordable, reusable, and stackable.

Best value

GROWNEER peat pot seed starter trays

(Image credit: Amazon)

GROWNEER peat pot seed starter trays

120 cells at a steal

They're low-priced, biodegradable, and come with 15 plant labels.

Pros:

  • Organic
  • Biodegradable
  • Affordable
  • Plantable in ground
  • 15 plant labels included

Cons:

  • Dainty

Made from 100-percent organic and biodegradable paper peat, this 12-tray set is budget-priced and easy to work with. You'll plant the seeds, water as directed, then use scissors to cut the pods apart and plant them straight into the soil. What could be simpler? This kit comes with 120 cells and 15 plastic labels.

Best kit

seed starter kit with heat pad

(Image credit: Soligt Kitchen)

Soligt seed starter kit with heat mat

Warm up your growing plants

Serious gardeners will love the humidity dome and seedling mats included in this kit.

Pros:

  • 120 cells
  • Two heat mats and humidity domes included
  • Reusable and recyclable
  • Domes snap into place

Cons:

  • Moisture leaks out of domes

SOLIGT pampers seeds and gives you everything you need to be successful. This kit includes two seed starter trays, two humidity domes, and two heat pads to warm the trays. This is a complete set made of strong plastic, and it's reusable and recyclable. The humidity domes allow you to control the heat and moisture level for a no-fail gardening experience!

Here's to your green thumb

Why you can trust Gardeningetc Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.

All these seedling starter trays will encourage seeds and give them the best chance to flourish before it's warm enough to plant them outside. Our staff pick from 9GreenBox is a kit of 24 trays that give you 144 cells total. The thin plastic cells help the soil warm to room temperature, while the drainage holes give your seeds just the right amount of moisture. 

When you want complete control over the temperature and humidity inside your seedling starter trays, you want to go with MIXC. This is a 10-pack kit that includes an adjustable, vented humidity dome, plant labels, and 120 cells.

If organic gardening is your thing, you'll need the JOLLY GROW peat pots. There are 50 cells included, and each can be planted directly in the ground.

Why trust us?

At GardeningEtc, we recommend the best products to enhance your life. As expert curators, we handpick products based on quality and usefulness to positively impact your day-to-day, from cart to doorstep. We take our responsibility seriously — testing products, reading reviews, and sourcing knowledgeable outlets to ensure our selections are worthy of your time and money. We deliver detailed product overviews, balancing objective information with subjective opinions, so making the best choice for your home and lifestyle is as easy as possible.

Jodi Owan works behind a keyboard and camera. With over 20 years of experience writing for print magazines and popular websites online, she writes reviews, buyer guides, and outdoor adventure. When home, she kicks up her feet in the Midwest with two dogs and can often be found hiking or climbing or with her head in a book.