About Brassica Microgreens

This guide covers a wide range of brassica microgreens, including Broccoli, Kale, Cabbage, Kohlrabi, Asian brassicas like Pak Choi, Tatsoi, and Komatsuna, and most Mustards. (For Radish microgreens, refer to the separate Radish guide.) These varieties are known for their reliable germination, quick growth, and nutrient-dense, flavorful harvests.

When to Plant Brassica Microgreens Seeds

Grow indoors year-round for a steady supply. Expect a fast turn time of approximately 7 to 12 days from sowing to harvest.

Where to Plant Brassica Microgreens Seeds

Provide strong, even light to prevent stretching and ensure sturdy stems. Sow onto a fine, sterile growing mix with a level surface to promote a dense, uniform canopy.

How to Plant Brassica Microgreens Seeds

Do not pre-soak seeds. Broadcast at a moderate density of half an ounce per standard 10×20 tray. Cover with a lid for two to three days to encourage germination. Once seedlings reach ½ to one inch tall, remove the cover and move them under strong light. Bottom-water lightly and avoid oversaturating the growing media.

How to Care for Brassica Microgreens

Keep the media just barely moist, as excess water can lead to damping-off (stem rot). Harvest between days 7 and 12 at the cotyledon stage for the mildest flavor and best texture. Expect a dense, uniform canopy, with coloration varying by variety.

Companion Microgreens

Blend brassicas with pea or sunflower microgreens for added bulk, or mix with radish for a spicy kick. Note that Mizuna and some mustards are slightly mucilaginous (they form a natural gel when wet), so mist gently during the first 24 to 48 hours after sowing.