Microgreens need a DLI of about 9–16 mol/m²/day: roughly 150–280 µmol/m²/s for 16 hours. Here is how to set hours, PPFD and lamp height.
Category: Microgreens & Sprouts
Microgreens Blackout Period: How Long and Why (Days by Crop)
Blackout period by crop: 1–2 days for arugula and radish, 3 days for pea and sunflower, longer for basil and cilantro, plus when to uncover and why.
Grams of seed per 10x20 tray for 18 microgreens, from Johnny's trial data and Utah State Extension, plus how to scale to any container.
How to Grow Microgreens Without Soil (Mats, Coco and Hydroponic Trays)
How to grow microgreens without soil on hemp, jute or coir mats: trial results, seed rates, when to feed, step-by-step setup and food safety.
Microgreens Mold vs Root Hairs: How to Tell the Difference (and Fix It)
Four quick tests to tell harmless root hairs from mold on a microgreen tray, what to do with a moldy crop, and how to stop it coming back.