Which plants pair well with Black radish?

Lettuce, Carrot, Pea, Bean, Spinach

How fast do I get my plan?

Three steps, three minutes. Type your location, measure your bed, click the veg you like. I do the rest.

Free: one bed, full annual plan, PDF export — free and no account needed. Pro (multiple beds + weather + garden calendar + push & email reminders): €4.90/month or €39/year. Premium (with AI coach Stachi): €9.90/month or €79/year.

Does it work for a balcony planter?

Yes. From a 40×20 cm balcony box to a 3×1 m raised bed — same three steps, same outcome.

Do I need an account?

Not for your first plan — creating one works without signing in. You'll need an account once you want multiple beds, your plan on multiple devices, or weather reminders.

← All plants

Vegetables · Cool

Black radish

Brassicaceae

Plant spacing: 15 cm
USDA zones: 3a–9b
Frost-sensitive: no
Growth duration: 14 weeks

Which beds suit?

Sun (prefers): full sunAlso okay:partial shade
Soil (prefers): loamyAlso okay:raised-bed mixsandy
Drainage (prefers): normalAlso okay:very free-draining

Seed & start

Direct sow

Sow directly into the bed — no pre-culture needed.

Stachi's tip

Black radish is the winter vitamin bomb, much sharper than its red cousin. Sow July-August, harvest from October onwards — frost sweetens it. Classic cough-syrup ingredient: hollow out the root, fill with honey, leave overnight.

Who is Stachi? →

The plant's year: sowing, transplanting, harvest

Sowing

Harvest

Good neighbours

Limited evidence. This value is not backed by a specialist source — treat it as a pointer.

Avoid these neighbours

Cucumber

Limited evidence. This value is not backed by a specialist source — treat it as a pointer.

Good pre-cultures

Stachi has no specific pre-cultures recorded.

Sources

LLM-Baseline-2026-05-27 Phase 7 expansion
LWG Bayern – Gemüsearten zur Nachkultur (https://www.lwg.bayern.de/gartenakademie/gartendokumente/infoschriften/148345/)
Dreschflegel – Winterrettich Runder Schwarzer Winter (https://dreschflegel-saatgut.de/winterrettich-runder-schwarzer-winter)
Bingenheimer Saatgut – Rettich selbst anbauen (https://blog.bingenheimersaatgut.de/rettich)

Where these figures come from

Timing: Horticulturally established — consistent across the cited standard works.
Spacing: Horticulturally established — consistent across the cited standard works.
Companion planting: Limited evidence. This value is not backed by a specialist source — treat it as a pointer.
Crop rotation: Limited evidence. This value is not backed by a specialist source — treat it as a pointer.
Yield: Limited evidence. This value is not backed by a specialist source — treat it as a pointer.

Sources: LLM-Baseline-2026-05-27 Phase 7 expansion · LWG Bayern – Gemüsearten zur Nachkultur (https://www.lwg.bayern.de/gartenakademie/gartendokumente/infoschriften/148345/) · Dreschflegel – Winterrettich Runder Schwarzer Winter (https://dreschflegel-saatgut.de/winterrettich-runder-schwarzer-winter) · Bingenheimer Saatgut – Rettich selbst anbauen (https://blog.bingenheimersaatgut.de/rettich)

Articles about this plant

Black radish: why you should let it rest before you bite in
Last year Frau Schneider bit straight into one, unsalted, fresh out of the ground, and spent the next two minutes coughing instead of talking. The problem wasn't the radish. It was the timing.

Related plants

Products mentioned in this post

Plantura organic tomato seed set (10 varieties)Open-pollinated, good germination — robust for raised beds.
Organic tomato seed set, 14 varieties
Organic heirloom tomato seed set (Demeter, 12 varieties)
Organic vegetable seed set, 10 varietiesCucumber, tomato, beetroot, broccoli, carrot, chard & more.