Purple Plum Radish
Purple Plum Radish is a round, globe-shaped root vegetable with fruit around 1-1.5 inches diameter. Ready from roughly day 25-30. Germination takes 4-7 days. Space 1-2 inches apart at pH 6.0-7.0. Full sun to partial shade (4-8 hours). It will crop in a container. This one is a hybrid: buy seed each season instead of saving it.

Sowing
Direct sow 2-4 weeks before last frost and again in late summer. Plant seeds ½ inch deep, thin to proper spacing.
Cultivation
- Sun
- Full sun to partial shade (4-8 hours)
- Water
- ½-1 inch per week, consistent moisture
- Soil
- Well-drained, loose soil with good organic matter
- Soil pH
- 6.0-7.0
- Spacing
- 1-2 inches
- Height
- 0-3 feet
- Season
- Cool season
Appearance & flavour
- Colour
- Deep purple skin with bright white flesh
- Size
- 1-1.5 inches diameter
- Shape
- Round, globe-shaped
- Flavour
- Mild, sweet, and crisp with less bite than traditional radishes
In the kitchen
Fresh eating, salads, garnish, pickling. Beautiful when sliced to show purple and white contrast.
Pests, disease & resistance
- Pests
- Flea beetles, aphids, cabbage root maggots
- Diseases
- Clubroot, black rot, downy mildew
- Resistance
- Good resistance to clubroot and downy mildew
Planting calendar by USDA zone
| Zone | Start indoors | Transplant | Direct sow | Harvest |
|---|---|---|---|---|
| 1 | — | — | June – July | June – September |
| 2 | — | — | May – July | June – September |
| 3 | — | — | May – June | May – October |
| 4 | — | — | April – June | May – October |
| 5 | — | — | April – May | May – November |
| 6 | — | — | April – May | April – November |
| 7 | — | — | March – May | April – November |
| 8 | — | — | March – April | March – December |
| 9 | — | — | February – March | February – December |
| 10 | — | — | January – March | February – December |
| 11 | — | — | January – February | January – December |
| 12 | — | — | January – February | January – December |
| 13 | — | — | January – February | January – December |
Companion planting
8 beneficial pairings indexed for this variety, 3 to avoid.
Avoid
Nutrition (per 100 g)
- Calories (per 100 g)
- 16
- Protein (g)
- 0.68
- Fat (g)
- 0.1
- Carbohydrate (g)
- 3.4
- Fibre (g)
- 1.6
- Sugars (g)
- 1.86
- Vitamin A (µg)
- 0
- Vitamin C (mg)
- 14.8
- Vitamin E (mg)
- 0
- Vitamin K (µg)
- 1.3
- Vitamin B6 (mg)
- 0.071
- Folate (µg)
- 25
- Calcium (mg)
- 25
- Iron (mg)
- 0.34
- Magnesium (mg)
- 10
- Phosphorus (mg)
- 20
- Potassium (mg)
- 233
- Zinc (mg)
- 0.28
- Selenium (µg)
- 0.6
Where to buy seed and equipment
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Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.
Grown Purple Plum Radish?
Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.
Similar varieties
Other root vegetables with a comparable time to harvest, so a season that suits Purple Plum Radish suits these too.
- Cherry Belle Radish 22 days
- Nelson Carrot 21 days
- French Breakfast Radish 21 days
- Easter Egg Radish 30 days
- Tokyo Cross Turnip 35 days
- Scarlet Queen Turnip 37 days