Our quick picks
Bootstrap Farmer 1020 Trays (Heavy-Duty, No Holes)
See the pick →Burpee Self-Watering Seed Starting Tray (72-Cell)
See the pick →Jiffy Peat Pellets (Greenhouse Refill, 36mm)
See the pick →VIVOSUN Seed Starting Humidity Dome (with Vents)
See the pick →Seed starting trays look interchangeable until you have bought the flimsy kind, watched them crack and warp halfway through the season, and had to repot a flat of seedlings mid-stretch. The real decisions are durability, how many cells you need, and how you plan to water. This guide covers the trays worth owning, from a buy-once heavy-duty standard to a forgiving self-watering kit for first-timers.
If you are new to the whole process, our guide to how to start seeds indoors walks through sowing depth, moisture, and timing alongside the gear.
Best overall: Bootstrap Farmer 1020
The thing that frustrates most people about seed trays is that the standard nursery flats crack, flex, and fail after a season or two. The Bootstrap Farmer 1020 is the answer: thick, BPA-free, USA-made plastic built to survive many years of reuse, repeated washing, and time on a heat mat.
Because it uses the universal 1020 footprint (10 x 20 in), it pairs with any insert, humidity dome, or heat mat you already own or will buy later. The base model has no drainage holes, so you use it as a solid bottom tray for bottom-watering or drop a cell insert inside it. It costs several times what a disposable tray does, and that is the whole point: spread over years of use, it is cheaper and far less annoying.
Best for beginners: Burpee Self-Watering
The most common way beginners lose seedlings is uneven watering: too dry and they wilt, too wet and they damp off. The Burpee Self-Watering tray takes that off your plate. It is a complete 72-cell kit with a reservoir and a capillary mat that bottom-waters the seedlings, keeping moisture steady and forgiving the occasional missed day.
The cells are on the small side for vigorous, fast-growing seedlings, and the plastic is lightweight rather than built for years of reuse. But as a first kit that handles the trickiest part for you, it lowers the failure rate considerably.
Budget: Jiffy Peat Pellets
If you want the absolute simplest, cheapest way to start a batch of seeds, Jiffy Peat Pellets are it. Add water, the compressed peat swells into a ready-to-sow plug, you drop in a seed, and at transplant time you plant the whole pellet with almost no root disturbance.
They are single-use, so they are not reusable like cell trays, and the mesh netting around each pellet can girdle roots if you do not peel it off before transplanting. For a one-time batch or a true beginner testing the waters, the low cost and near-zero setup are hard to beat.
Best dome: VIVOSUN Humidity Dome
A dome is the cheap upgrade that meaningfully improves germination. The VIVOSUN Humidity Dome traps moisture over a standard 1020 tray so seeds stay in the warm, humid microclimate they germinate best in, and its adjustable top vents let you wean the seedlings off that humidity as they emerge (leaving the dome sealed too long invites mold and damping off).
The clear plastic is thin and can crack with rough handling, and the tall profile needs clearance under your lights. But for the price, a vented dome is one of the best returns on a few dollars in the whole seed-starting kit.
How to choose seed starting trays
Four questions cover almost every decision.
Match the tray to how you grow
Cell count
More, smaller cells (72+) start the most seedlings per tray but crowd roots sooner. Fewer, larger cells give roots more room before potting up. Match cell count to how big your plants get before transplant.
Durability
Flimsy trays crack and warp, especially on a heat mat, and you replace them yearly. Heavy-duty 1020 trays cost more upfront but last for years, so the long-run cost is lower.
Bottom-watering
Watering from below (a solid base tray or a self-watering reservoir) keeps moisture even and avoids dislodging seeds or splashing soil onto leaves. It is the gentlest, most forgiving way to water seedlings.
Domes and humidity
A humidity dome holds the warmth and moisture seeds germinate in. Vents matter: you want to open them gradually once seedlings sprout, then remove the dome entirely so air can move.
The single biggest upgrade most people make is moving from disposable trays to one heavy-duty base tray plus inserts. You bottom-water into the solid base, swap inserts by crop, and the whole setup outlasts a decade of flimsy flats.
| Product | Sprout Score | Price | Best for |
|---|---|---|---|
| Bootstrap Farmer 1020 Trays (Heavy-Duty, No Holes) | 8.8 | $25-$50 | Gardeners tired of replacing cracked trays every season. |
| Burpee Self-Watering Seed Starting Tray (72-Cell) | 7.4 | $25-$50 | Beginners who want low-maintenance, self-watering seed starting. |
| Jiffy Peat Pellets (Greenhouse Refill, 36mm) | 7.3 | Under $25 | Beginners wanting the fastest, simplest way to start a tray of seeds. |
| VIVOSUN Seed Starting Humidity Dome (with Vents) | 7.7 | Under $25 | Holding germination humidity over a standard tray, then venting it off. |
What size seed starting tray should I get?
The standard is the 1020 tray, a 10 x 20 inch footprint that nearly every insert, dome, and heat mat is built to fit. Standardizing on 1020 means everything you buy works together. Within that, choose a cell insert sized to how large your seedlings get before transplant: bigger cells for tomatoes and peppers, smaller cells for greens and flowers.
Should you water seedlings from the top or bottom?
Bottom-watering is the gentler choice for seed starting. Pouring water into a solid base tray or using a self-watering reservoir lets the soil wick moisture up evenly, without dislodging seeds or splashing soil onto tender leaves. It also encourages roots to grow downward toward the moisture. Top-watering works but is easier to overdo and harder on fresh sprouts.
Do I need a humidity dome for seed starting?
A dome is not strictly required, but it noticeably improves and speeds germination by holding warmth and moisture around the seeds. The key is venting: open the dome's vents once seedlings emerge and remove it entirely soon after, because a sealed dome over sprouted seedlings traps too much moisture and invites damping off.
Are cheap seed starting trays worth it?
For a single season or a first attempt, inexpensive trays or peat pellets are fine. The catch is that thin trays crack and warp, often within a year and faster on a heat mat, so you keep rebuying them. If you start seeds every spring, a heavy-duty 1020 tray costs more once but lasts for years, which makes it cheaper over time and far less frustrating.
The bottom line
If you start seeds every year, buy the Bootstrap Farmer 1020 once and stop replacing cracked trays. If you are new and want the watering handled, the Burpee self-watering kit lowers the failure rate. Jiffy pellets are the cheapest way to test the waters, and a vented VIVOSUN dome is the few-dollar upgrade that improves germination across any tray you own.
