Indoor Microgreens: Fast Harvests All Winter Long

By Sophia Martinez · September 27, 2026

The Fastest Crop You Can Grow

Microgreens go from seed to harvest in just 7-14 days, making them the perfect indoor crop for fall and winter. You get concentrated nutrition — studies show microgreens contain 4-40 times more nutrients than their mature counterparts.

Essential Supplies

You need shallow trays (10x20 inch works best), a soilless growing medium like coconut coir or hemp mats, quality seeds labeled for sprouting, and a spray bottle. A simple LED shop light provides all the light needed.

Best Microgreen Varieties for Beginners

Sunflower shoots grow vigorously in 10-12 days with a nutty flavor. Pea shoots produce sweet tendrils in 10 days. Radish microgreens add peppery kick in just 7 days. Broccoli microgreens pack maximum sulforaphane.

Step-by-Step Growing Method

Moisten your growing medium and spread it in the tray. Scatter seeds densely across the surface — about 1 tablespoon per 10x10 inch area. Mist thoroughly and cover with another tray for blackout germination.

Light and Temperature Management

After 2-3 days of darkness, remove the cover and expose seedlings to light. They will green up within 24 hours. Keep temperature between 65-75°F for fastest growth.

Watering Technique

Bottom-water by adding water to the tray beneath the growing tray. This prevents fungal issues that occur with overhead watering. Keep the medium moist but never soggy.

Harvesting and Storage

Cut microgreens just above the soil line with clean scissors when first true leaves appear. Harvest in the morning for maximum crispness. Store in a sealed container with a paper towel for up to 7 days.