If you’re short on space but still want fresh greens, microgreens are the perfect solution. Packed with flavor and nutrients, microgreens are young seedlings of vegetables and herbs harvested just days after sprouting. The best part? You don’t need a garden or fancy equipment — just a sunny window.
This guide will show you exactly how to grow microgreens on a window, which varieties grow best, and how to harvest and use them for maximum freshness and flavor.
Why Grow Microgreens on a Window?
Windows provide the natural light microgreens need to grow quickly. Unlike mature vegetables, microgreens are harvested young — usually in 7–14 days — so they don’t require deep containers, strong roots, or long-term care.
Benefits of window-grown microgreens:
- Fast harvest in under two weeks
- Minimal space required — perfect for apartments
- No garden needed — just soil, seeds, and light
- Higher nutrient density than mature greens
- Fresh and flavorful additions to meals
Best Microgreens to Grow on a Window
These varieties grow quickly, stay compact, and thrive in indoor light:
1. Radish Microgreens
- Flavor: Crisp, peppery
- Days to harvest: 5–7
- Why it’s great: Grows fast and reliably in low light
2. Broccoli Microgreens
- Flavor: Mild, slightly sweet
- Days to harvest: 7–10
- Why it’s great: Nutrient-rich and beginner-friendly
3. Sunflower Microgreens
- Flavor: Nutty, crunchy
- Days to harvest: 7–10
- Why it’s great: Thick stems and leaves make them satisfying to eat
4. Pea Shoots
- Flavor: Sweet and tender
- Days to harvest: 10–14
- Why it’s great: More vertical growth, ideal for bright window sills
5. Mustard Microgreens
- Flavor: Spicy, wasabi-like kick
- Days to harvest: 6–8
- Why it’s great: Adds a flavorful punch to sandwiches or salads
6. Kale Microgreens
- Flavor: Earthy and mild
- Days to harvest: 7–10
- Why it’s great: Hardy and full of vitamins
7. Cabbage Microgreens
- Flavor: Mild, slightly sweet
- Days to harvest: 6–9
- Why it’s great: Vibrant color and texture
What You Need to Grow Microgreens on a Window
You don’t need anything fancy. Here’s the basic setup:
Supplies:
- Shallow tray or container (even a takeout box works)
- Growing medium (organic potting soil or coconut coir)
- Microgreen seeds
- Spray bottle
- Plastic dome or clear lid (optional for germination)
- Sunny window (ideally east or south-facing)
Step-by-Step Guide to Growing Microgreens
Step 1: Prepare the Container
Fill a shallow tray with 1–2 inches of moist soil. Press it down gently to level the surface.
Step 2: Scatter the Seeds
Sprinkle seeds evenly across the surface. Don’t worry about spacing — microgreens grow densely.
Step 3: Press and Mist
Lightly press the seeds into the soil and mist with water using a spray bottle.
Step 4: Cover for Germination
Cover the tray with a plastic lid or another tray to keep moisture in. Keep in a warm spot for 2–3 days.
Step 5: Uncover and Move to Window
Once seeds sprout, remove the cover and place the tray on a bright windowsill.
Step 6: Water Daily
Mist lightly once or twice a day. Keep the soil moist but not soggy.
Step 7: Harvest
Use scissors to cut the microgreens just above the soil line when they reach 2–3 inches tall.
Best Window Conditions for Microgreens
Microgreens don’t need direct sun all day, but they do need good brightness.
Ideal window setup:
- East or south-facing windows for 4–6 hours of light
- No cold drafts (especially in winter)
- Rotate trays daily for even growth
- Supplement with LED grow lights if light is weak in winter
Common Mistakes to Avoid
- Overwatering: Leads to mold or rot
- Poor drainage: Use a tray with holes or water very carefully
- Too little light: Causes leggy, weak growth
- Starting with hard seeds: Begin with beginner-friendly seeds like broccoli or radish
How to Use Microgreens After Harvest
Freshly harvested microgreens add flavor, crunch, and nutrition to many dishes.
Add them to:
- Sandwiches and wraps
- Salads and bowls
- Smoothies
- Soups (as garnish)
- Scrambled eggs or omelets
Use immediately after cutting for the best flavor and texture. Store leftovers in a breathable container in the fridge for up to 3 days.
FAQs
How much light do microgreens need on a windowsill?
At least 4–6 hours of bright light daily. Use an east or south-facing window if possible.
Can I regrow microgreens after harvesting?
No. Microgreens are one-time harvests. Start a fresh batch after cutting.
Do I need fertilizer?
No. Microgreens grow so quickly they don’t require added nutrients.
Can I grow microgreens without soil?
Yes — hydroponic grow mats or coconut fiber pads work too. Soil gives more flavor and better results for beginners.
How often should I plant new trays?
Every 1–2 weeks for a continuous harvest. Stagger trays for an ongoing supply.
Final Thoughts
Growing microgreens on a window is one of the simplest, most rewarding gardening projects you can do indoors. In just a week or two, you’ll have fresh, nutrient-packed greens ready to harvest — no yard, garden, or grow lights required. With just a sunny sill and a little attention, you can enjoy crisp, homegrown flavor year-round — right from your kitchen window.