Indoor Microgreens Setup: Grow 25 Varieties Year-Round in Any Apartment
Why Microgreens?
Microgreens are seedlings harvested 7-21 days after germination, when they have their first true leaves. They contain 4-40x more nutrients than mature plants (USDA study), grow in any indoor space, and produce a harvest every single week with a staggered planting schedule. A 2x4 foot shelf produces enough microgreens for a family of four.
Essential Setup ($80-150 Total)
- Shelving: Wire rack (4 shelves, 18x36 inches) — $30-50
- Lighting: 2 full-spectrum LED shop lights per shelf (5000K, 2000+ lumens) — $40-60
- Trays: 1020 growing trays with drainage holes + solid bottom trays — $20-30 for 20 sets
- Medium: Coconut coir mats or potting mix — $15-20
- Timer: Outlet timer for lights (16 hours on, 8 hours off) — $10
- Seeds: Bulk microgreen seeds from True Leaf Market or Johnny's — $30-50 starter pack
25 Best Microgreen Varieties
Beginner (7-10 days to harvest)
| Variety | Days | Flavor | Difficulty |
|---|---|---|---|
| Radish | 6-8 | Spicy, peppery | Very easy |
| Broccoli | 8-10 | Mild, slightly bitter | Very easy |
| Kale | 8-10 | Mild, earthy | Very easy |
| Arugula | 8-10 | Peppery, nutty | Easy |
| Cabbage (red) | 8-12 | Mild, sweet | Easy |
Intermediate (10-14 days)
| Variety | Days | Flavor | Notes |
|---|---|---|---|
| Pea shoots | 10-14 | Sweet, fresh | Soak seeds 12h before planting |
| Sunflower | 10-12 | Nutty, crunchy | Remove hulls, soak 8h |
| Cilantro | 12-14 | Bright, citrusy | Split seeds for better germination |
| Basil | 12-16 | Sweet, aromatic | Needs warmth (75F+) |
| Mustard | 8-12 | Hot, wasabi-like | Very fast grower |
Advanced / Specialty (14-21 days)
- Amaranth (14-18 days) — stunning red/purple color
- Beet (14-18 days) — vivid red stems
- Chard (12-16 days) — multi-colored stems
- Celery (18-21 days) — intense celery flavor
- Shiso (14-18 days) — Japanese herb, unique flavor
Step-by-Step Growing Process
- Prepare medium: Moisten coconut coir mat or fill tray with 1 inch of potting mix
- Dense seeding: Spread seeds evenly, 8-10 seeds per square inch. Do not bury.
- Blackout period: Cover with another tray (weight on top) for 3-4 days. Forces stems to elongate.
- Uncover and light: Remove cover, turn on lights (16h/day, 6-8 inches above canopy)
- Bottom water: Pour water into the bottom tray, let medium wick up. Never top-water after day 4.
- Harvest: Cut at soil level with sharp scissors when first true leaves appear
Weekly Staggered Schedule
Plant 2-3 trays every 3-4 days. This gives you a continuous harvest:
- Monday: Plant 2 trays (radish + broccoli)
- Thursday: Plant 2 trays (kale + arugula)
- Sunday: Harvest Monday's trays, plant 2 new trays
Troubleshooting
- Mold: Too much humidity — increase airflow with a small fan
- Leggy stems: Not enough light — lower lights to 4-6 inches above canopy
- Yellow leaves: Harvest sooner — yellowing means they need more light
- Slow germination: Seeds too old or room too cold (aim for 68-75F)
Final Thoughts
Microgreens are the fastest, most space-efficient way to grow food indoors. A single shelf produces $20-30 worth of greens per week (grocery store microgreens cost $3-5 per ounce). Start with radish and broccoli — the two easiest varieties — and expand your collection as you build confidence.