Purple Plum Radish is an open-pollinated variety that holds well and resists cracking. These radishes have a deep purple exterior and a crisp white interior. Purple Plum Radishes average 1.5″ in diameter and are quick to mature in only 25 days. It holds well in the field and doesn’t get pithy as radishes increase in size. Purple radishes tend to have a slightly milder flavor than traditional red radishes. The spicy radish flavor will also be reduced when they are cooked. This variety is widely-adapted and grows well in all planting zones.
Radishes perform best when direct seeded with a walk-behind planter like our Hoss Garden Seeder. We recommend using a modified #1 plate or #2 plate with holes drilled to the appropriate size for the seed being used. Seed size can vary from one variety to the next, so seed plate hole size should always be calibrated to fit the seed being used. Radishes perform well when planted on double rows or on a “bed” with several rows planted closely together. This allows for maximization of garden space and the tops will help to shade any new weed development between closely planted rows.
Radishes grow best in cooler weather and should be planted in early spring or fall when temperatures have cooled. They prefer well-drained soil and will tend to split if soil conditions remain saturated for long periods of time. Radishes should be harvested at the ideal size for each variety. If allowed to get too large, they will become pithy and not as palatable. Once harvested, tops should be removed for optimal storage. Radishes with tops removed will store in the fridge for up to two weeks.
Purple Plum Radish Planting Information
Planting Method: direct seed
When to Plant: early spring and fall
Planting Depth: 1/4″
Seed Spacing: 1″
Row Spacing: 6-12″
Days to Maturity: 25
Disease Tolerance: none