SproutSmart
SproutSmart Intelligent Garden Sowing

Black Spanish

Radish

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

MilestoneDate
Start IndoorsDirect Sow
Last FrostMar 6th
Transplant / Sow OutdoorsMar 6th
Harvest BeginsApr 30th
Harvest EndsNov 26th

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

Frequently Asked Questions


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.
What are the signs black Spanish (eggplant) is ready to harvest?
Harvest when fruits are glossy dark purple/black, firm, and about 6–8 inches long for typical Black Spanish size. Check at least 55 days from transplanting (often sooner on strong plants): if the skin looks dull or the fruit feels soft/spongy, it’s overmature and may taste bitter. Use scissors or a sharp knife and cut the fruit with a short stem to avoid damaging nearby flowers.
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.