microgreen
EdibleRadish Microgreens
Raphanus sativus
Considered non-toxic to cats and dogs (source: ASPCA (cultivated radish not listed)).
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.
Radish microgreens are about the easiest and fastest microgreen to grow, ready in roughly a week with a peppery, mustard-like bite. They germinate fast and forgive beginner mistakes.
About Radish Microgreens
Radish microgreens (Raphanus sativus) are about the easiest and fastest microgreen to grow, ready in roughly a week with a peppery, mustard-like bite. They germinate fast and forgive beginner mistakes, which makes them a strong starting point. The space needed is minimal: a shallow 2-litre tray on any spot with moderate light. For a renter testing whether they can grow anything at all, this is a low-stakes place to begin.
These are easy and need no soaking; just sow the seed densely straight onto a moist tray. Moderate light is plenty, and once the shoots stand up a little light deepens their color and flavor. Cut just above soil level when the seed leaves are open and before they get leggy. A tray is usually ready in about 6 to 10 days.
What it’s like to grow
Radish microgreens are easy and forgiving, ideal for a nervous first-timer. The one thing that trips people up is harmless: fuzzy white root hairs near the base often get mistaken for mold, but real mold is slimy and webby, while these are normal. Left too long in the dark, the shoots stretch pale and leggy, so give them light once they're up. They want only moderate light and a single cut. Non-toxic to cats and dogs, they're about as foolproof as a week-long crop gets, good for anyone.
What to expect
First harvest in about 6–10 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 ↓Tips
- No soaking needed — sow the seed densely straight onto a moist tray.
- Give light once the shoots stand up to deepen color and flavor.
- Cut just above soil level when the seed leaves are open and before they get leggy.
Common problems
- Fuzzy white root hairs mistaken for mold (they’re normal — mold is slimy and webby).
- Leggy, pale shoots if left in the dark too long.
Common questions
Is Radish Microgreens toxic to cats and dogs?
Radish Microgreens is non-toxic to cats and dogs, which makes it a safe pick if you have pets. Source: ASPCA (cultivated radish not listed).
How much light does Radish Microgreens need?
Radish 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 Radish Microgreens?
Water Radish Microgreens when the top inch of soil feels dry, then let it drain. Aim for evenly moist, not soggy.
What temperature does Radish Microgreens need?
Radish 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 Radish Microgreens take to grow?
Expect a first harvest about 6–10 days from sowing under good conditions. One of the fastest, most reliable microgreens — a tray of radish seed gives a spicy flush in about a week.
Can I grow Radish Microgreens without a sunny window?
Yes. Radish Microgreens does well under an affordable clip-on grow light, so a bright window isn't essential.
How big does Radish Microgreens get?
Peppery seedling shoots sown densely as a tray and cut young.
How do I propagate Radish Microgreens?
Sow seed densely on a shallow tray of moist mix and cut the spicy shoots in about a week.
What pests affect Radish 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 Radish Microgreens easy to grow?
Yes. Radish Microgreens is forgiving and one of the better plants to learn on.
Gear for Radish 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: Stacy Spensley, CC BY 2.0, via Wikimedia Commons (CC-BY). Care info last updated 2026-06-02.