microgreen
EdibleBroccoli Microgreens
Brassica oleracea (Italica Group)
Considered non-toxic to cats and dogs (source: ASPCA (not listed; brassica)).
Some direct sun — an east or west window, or a few hours of direct light.
Keep evenly moist — water when the top inch of soil is dry.
Forgiving and beginner-friendly.
Broccoli microgreens are a mild, tender tray crop prized for their nutrient density. They grow much like other brassica microgreens and are ready in roughly a week and a half.
About Broccoli Microgreens
Broccoli microgreens (Brassica oleracea, Italica Group) are a mild, tender tray crop prized for their nutrient density. Broccoli is a cultivated brassica with deep Mediterranean roots, and at the microgreen stage it gives a gentle, fresh flavor in roughly a week and a half. The setup is small and cheap, a shallow 2-litre tray in moderate light, so it fits a renter's windowsill or counter with no special equipment.
These grow much like other brassica microgreens and are easy, needing only moderate light. Sow the small seed densely on a moist tray with no pre-soak, and use a short weighted or blackout period to encourage even, sturdy germination. Keep airflow up and avoid over-watering, since the fine brassica seedlings are mold-prone. Cut above the soil once the seed leaves open. A tray is usually ready in about 8 to 12 days.
What it’s like to grow
Broccoli microgreens are easy but a little more delicate than radish, mostly around moisture. Damping-off and mold follow sowing too wet or too crowded, so go easy on water and give the tray some airflow. Pale, stretched shoots mean too little light after germination, so bring them into moderate light once they're up. A single cut finishes the crop. Non-toxic to cats and dogs, they're a good pick for a grower who wants a nutrient-dense, mild tray and will watch the watering.
What to expect
First harvest in about 8–12 days. It’s forgiving, so it’s a good one to learn on. No sunny window? It also does fine under a clip-on grow light.
See what you’ll need to get started ↓Companions
Tips
- Sow densely on a moist tray; no pre-soak needed for the small seed.
- Use a short blackout/weighted period to encourage even, sturdy germination.
- Keep airflow up and avoid over-watering — fine brassica seedlings are mold-prone.
Common problems
- Damping-off and mold from sowing too wet or crowded.
- Pale, stretched shoots from too little light after germination.
Common questions
Is Broccoli Microgreens toxic to cats and dogs?
Broccoli Microgreens is non-toxic to cats and dogs, which makes it a safe pick if you have pets. Source: ASPCA (not listed; brassica).
How much light does Broccoli Microgreens need?
Broccoli Microgreens does best in medium, indirect light: near an east or west window, or a little back from a bright one. Direct midday sun can scorch it.
How often should I water Broccoli Microgreens?
Water Broccoli Microgreens when the top inch of soil feels dry, then let it drain. Aim for evenly moist, not soggy.
What temperature does Broccoli Microgreens need?
Broccoli Microgreens is happiest around 18–24 °C. It tolerates brief dips to about 10 °C, but cold drafts and sudden chills set it back.
How long does Broccoli Microgreens take to grow?
Expect a first harvest about 8–12 days from sowing under good conditions. A tray of broccoli seed gives a mild, tender flush in around 10 days, popular for its sulforaphane content.
Can I grow Broccoli Microgreens without a sunny window?
Yes. Broccoli Microgreens does well under an affordable clip-on grow light, so a bright window isn't essential.
How big does Broccoli Microgreens get?
Fine seedling shoots sown densely as a tray and cut young.
How do I propagate Broccoli Microgreens?
Sow seed densely on a shallow tray of moist mix and cut the tender shoots in about ten days.
What pests affect Broccoli Microgreens?
Watch for fungus gnats and aphids. Check new growth and the undersides of leaves often, and treat early with a rinse or insecticidal soap before they spread.
Is Broccoli Microgreens easy to grow?
Yes. Broccoli Microgreens is forgiving and one of the better plants to learn on.
Gear for Broccoli Microgreens
Gear suggestions to get you started — general picks, not paid placements.
Pet-toxicity from the ASPCA. Care details are general guidance, not professional or veterinary advice; only eat plants you can positively identify as the edible plant and part described. Photo: Teogenesis, CC BY-SA 4.0, via Wikimedia Commons (CC-BY-SA). Care info last updated 2026-06-02.