SproutSmart
SproutSmart™ Intelligent Garden Sowing

Black Spanish

Radish
Zone 10b Save Garden

Planting Schedule

Add Black Spanish to your garden to build a schedule and get reminders.
Botanical illustration of Black Spanish
55d to harvest

Sink your senses into Black Spanish’s velvety, inky skin and crisp, ivory interior—an earthy, peppery bite that feels both bold and clean. At maturity it forms a smooth, globe-to-oval root with a firm, juicy crunch, ideal for slicing fresh and for roasting until tender and mellow. Grow this 55-day black radish for a dramatic garden harvest and a striking flavor that shines in salads, relishes, and quick pickles.

Crop Dates

Growing note: In frost-free Zone 10b, grow this cool-season crop during the cooler dry season (October–February).
MilestoneDate
Start Indoors—
ClimateFrost-Free Climate
Transplant / Sow OutdoorsOct 1st
Harvest BeginsNov 25th
Harvest EndsFeb 28th

Crop Details

TraitValue
Days to Maturity55
Sun RequirementsFull SunFull sun
Growth HabitTaproot
Support NeededNone
Planting DepthNormal
Germination Temp (°F)45
Min Soil Temp (°F)40
Min Night Temp (°F)28
Harden Off (days)Not Required

Today's Conditions

Outdoor planting for Black Spanish in Zone 10b typically begins around 2026-10-01. Wait until soil reaches at least 40°F before transplanting Black Spanish.

Garden Alerts

In frost-free Zone 10b, grow this cool-season crop during the cooler dry season (October–February).

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Frequently Asked Questions

How do I stop black Spanish (eggplant) from getting spider mites or leaf stippling?
In warm, dry weather, check the undersides of leaves for tiny moving specks and fine stippling. Spray the undersides with insecticidal soap in the evening and repeat every 5–7 days for at least 3 rounds, since mites quickly rebound from eggs. Keep foliage evenly hydrated by avoiding drought stress, and remove heavily infested leaves to slow spread.
How often should I water black Spanish (eggplant) during the main growing phase?
From when plants start flowering through harvest, water deeply to keep the root zone evenly moist—about 1 inch per week total, adjusted for heat and container size. Aim for watering 1–2 times per week with thorough soaking, then let the top 1 inch of soil dry slightly before the next watering to prevent fruiting issues from soggy roots. Mulch helps maintain consistent moisture, which reduces blossom drop and stress.
Botanical illustration of Black Spanish

Sink your senses into Black Spanish’s velvety, inky skin and crisp, ivory interior—an earthy, peppery bite that feels both bold and clean. At maturity it forms a smooth, globe-to-oval root with a firm, juicy crunch, ideal for slicing fresh and for roasting until tender and mellow. Grow this 55-day black radish for a dramatic garden harvest and a striking flavor that shines in salads, relishes, and quick pickles.

Today's Conditions

Outdoor planting for Black Spanish in Zone 10b typically begins around 2026-10-01. Wait until soil reaches at least 40°F before transplanting Black Spanish.

Garden Alerts

In frost-free Zone 10b, grow this cool-season crop during the cooler dry season (October–February).

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 40°F for reliable germination and early growth.

Expert Note

For the best peppery bite, sow in cool weather and keep soil moisture steady to avoid pithiness or woody roots.