(Yes, we’re talking about trays, not actual dishes… though we’ll get to those when your greens are ready to eat)
If you’re new to growing microgreens (or ready to upgrade your setup), you’ve probably realized there are a lot of trays out there. Some are shallow, some deep. Some have holes, others don’t. Some look like they were made in the ‘70s. Heck, I’ve even used egg cartons!
Let’s break it all down, because choosing the right growing tray setup is key to healthy roots, happy greens, and stress-free watering.
What Exactly Is a Microgreen Growing Tray?
It’s actually two trays working together:
- The Planting Tray
This is where your microgreens live, grow, and soak up water.- Must-have: Drainage holes across the bottom. These let excess water escape so your soil doesn’t get soggy.
- Bonus points for using:
- Even hole spacing for balanced moisture
- Opaque or dark-colored trays (keeping roots in the dark = stronger roots)
- Durable trays that can survive multiple growing seasons
- The Watering Tray
This sits under your planting tray and is used for bottom watering (aka: giving your greens a gentle, spa-like soak from below).- Must-have: Solid base with tall sides to hold water
- Nice to have: Raised ridges or grooves to keep the planting tray from sitting in water too long
Watering Setups: Which Tray Combo Is Right for You?
Let’s explore two common setups and how they affect watering:
Watering Tray Bigger than the Planting Tray
Pros: You can easily lift trays out, water, and rotate
Watch out for: Overwatering – too much water in the bottom can sneak up on you
Watering Tray Same Size as Planting Tray
Pros: Perfect fit! Water transfers efficiently, and any overflow drains out the sides
Still keep an eye on water levels so you don’t overdo it
Tip: This setup is great for newer growers who want a simpler system
What to Look for in a Tray Set
- Sturdy material: Flimsy trays crack and warp, invest once in trays that last
- Drainage holes: Non-negotiable for your planting tray
- Depth: Around 1–2 inches is perfect for microgreens
- Reusability: Save money and reduce waste by choosing washable trays
Our Top Tray Tips (Say That 5 Times Fast)
- Clean trays between uses with a mild vinegar solution to avoid mold
- Rotate trays for even light exposure (especially if you’re using windows or side-lighting)
- Test water volume – your trays should be moist, not swimming
- Label your trays by variety to track what grows best in each setup
Can I Use Something From Around the House?
Absolutely! If you’re just getting started and don’t want to invest in trays yet, there are plenty of household items that can work in a pinch. Just make sure you can poke holes for drainage if needed.
Here are some tray substitutes you might already have:
- Takeout containers (clear plastic ones with lids work great, just poke drainage holes in the bottom)
- Produce clamshells from berries or salad greens
- Baking pans or casserole dishes (paired with a mesh or perforated tray above for drainage)
- Muffin tins (fun for mini micro experiments!)
- Lids from old Tupperware as bottom trays
Keep in mind, these DIY options are best for small batches or experimenting. Once you fall in love with growing (and you will), upgrading to dedicated trays will help with consistency and yield.
Final Takeaway
Microgreens grow fast and when your trays are set up right, so will you. Whether you’re stacking trays for a vertical garden or just keeping a sunny window green, investing in the right tray system gives your plants a strong, clean start.
