Black Spanish Round
70d to harvest
Sink your senses into Black Spanish Round’s velvety, inky skin—nearly black with a subtle charcoal sheen—giving way to crisp, white flesh that’s clean, bright, and pleasantly piquant. At maturity, roots are round and well-filled, with a firm, snappy texture that holds its character from garden to table. Grow this classic black radish for bold fresh slices and for robust flavor in winter-style preparations, where its peppery bite shines through.
Crop Dates
Growing note: Zone 1a has only 30 frost-free days — shorter than this crop's 70-day maturity. Outdoor planting is not viable; use protected cultivation.
| Milestone | Date |
|---|---|
| Last Frost | Jun 15th |
| Growing Approach | Protected Environment Only |
Crop Details
| Trait | Value |
|---|---|
| Days to Maturity | 70 |
| Sun Requirements | Full Sun |
| Growth Habit | Taproot |
| Support Needed | None |
| Planting Depth | Normal |
| Germination Temp (°F) | 55 |
| Min Soil Temp (°F) | 45 |
| Min Night Temp (°F) | 28 |
| Harden Off (days) | Not Required |
Recommended Companions
Frequently Asked Questions
Why are my Black Spanish Round plants developing powdery white patches on leaves, and what should I do?
Powdery mildew commonly appears as a white, flour-like coating on cucumber/melon-type leaves (or related vine crops) in warm, humid stretches. Remove the worst affected leaves, avoid wetting foliage, and increase airflow by spacing vines and pruning lightly. If it keeps spreading, treat early with a sulfur-based fungicide labeled for food gardens and follow the label’s timing before harvest (Black Spanish Round is typically ready around 70 days).
How do I tell when Black Spanish Round is ready to harvest?
Harvest when fruits reach full color and size for the variety, typically around 70 days after planting, and the skin feels firm with a deep, uniform dark color. If you gently lift the fruit and it separates cleanly or the stem dulls slightly, it’s usually ready—don’t wait until it gets soft. For best flavor, harvest in the morning and avoid leaving fruit on vines through heavy heat spikes.