Bootstrap Farmer 5x5 Shallow Trays

Stop fighting with flimsy plastic and switch to the modular system we use in our own vertical farm.

As the district’s longest-running microgreen pioneers, we’ve tested plenty of "off-the-shelf" inserts. These Bootstrap Farmer 5x5 Shallow Trays are the only ones that meet our standards for durability and efficiency. Designed specifically for boutique harvests and crop rotation, these 12.7 cm x 12.7 cm inserts are the gold standard for modular microgreen growing in NZ.

Why Modular Growing?

By using 5x5 inserts, you gain total control over your grow room. Instead of committing to one large tray of a single variety, you can mix and match eight of these inserts into a single 1020 shallow tray. This allows you to harvest different varieties at different times, maximizing your space and minimizing soil waste.

Pro-Tip: Use our rainbow of colors to color-code your varieties (e.g., Purple for Kale, Green for Broccoli) to track planting dates at a glance.

Features & Specs

Professional Grade: Made from heavy-duty, BPA-free, FDA-grade polypropylene plastic. Guaranteed not to chip or crack.
Shallow Design: 3.3 cm depth specifically engineered for microgreens to reduce growing media costs and improve airflow.
Perfect Fit: 8 inserts fit precisely into one Shallow 1020 Tray.
Built to Last: Backed by a 2-year warranty—this is a "buy it once" product that supports our zero-waste sustainability mission.
Versatile: Available with or without drainage holes for both top and bottom-watering applications.

Uses

Boutique Microgreen Production (Brodie, Radish, Thai Basil, etc.)
Seedling Propagation & Fodder
Educational Classroom Kits
Organization for high-rotation vertical farming

Note on Fit: These are designed to fit precisely into our Shallow 1020 Trays. Please note that eight 5x5s will not sit properly in standard 6.4 cm deep 1020s or 1010 trays.

Everything we stock has a purpose: to help you grow better, live healthier, and tread lighter on the planet. Learn more about our mission here.

1. What is the best tray size for growing microgreens on a kitchen windowsill?

For home growers with limited space, 5x5 microgreen trays are the most efficient choice. They fit perfectly on standard windowsills and allow you to grow multiple varieties without overcrowding your kitchen.

2. How many 5x5 trays fit into a standard 1020 microgreen tray?

Precisely eight 5x5 professional-grade trays fit inside one standard 1020 tray. This modular setup is ideal for "bottom watering" and managing different crops in one footprint.

3. Why should I choose heavy-duty professional trays over cheap plastic alternatives?

Professional-grade trays, like those from Bootstrap Farmer, are made from thick, BPA-free plastic that won’t crack or buckle. Investing in durable trays reduces long-term costs and plastic waste in NZ landfills.

4. How much seed should I use for a 5x5 microgreen tray?

Generally, 1/2 a teaspoon of small seeds (like broccoli or kale) or 1/2 a tablespoon of larger seeds (like radish or sunflower) is sufficient for a 5x5 growing area. Try that as a starting point and adjust depending on how the crop goes.

5. What is the best way to water microgreens in small 5x5 trays?

The most effective method is bottom watering. Place your 5x5 tray (with holes) inside a solid 1010 or 1020 tray (without holes) and add water to the base to prevent mold and dampening off.

6. Can I reuse 5x5 microgreen trays?

Yes, professional-grade 5x5 trays are designed for years of use. Simply wash them with warm soapy water or a mild steriliser between harvests to maintain food safety.

7. Do I need soil to grow microgreens in 5x5 trays?

While many NZ growers prefer organic potting mix, 5x5 trays are also compatible with "soilless" media like hemp/wool mats, coconut coir.

8. How often should I harvest microgreens in 5x5 trays?

Most varieties are ready in 7–14 days. Small 5x5 trays are perfect for "staggered harvests," meaning you can plant a new tray every few days for a continuous fresh supply.

9. Why are my microgreens growing tall and thin (leggy)?

"Leggy" microgreens usually indicate a lack of light. Ensure your trays get at least 6–8 hours of bright natural light or use a compact LED grow light for better results.

10. Are these trays food-safe and BPA-free?

Yes, our professional-grade trays are manufactured from high-quality, BPA-free, food-grade plastic, ensuring no harmful chemicals leach into your fresh greens.