Full Maturity at 60-65 days.
Skin Color: White to White Green Exterior. Watermelon Red Interior
USDA Hardiness Zones 3 to 9
Full Sun: At least 6 hours of sunlight daily.
Spread: 3 Inches
Height: 4 to 6 Inches
Radish Size: 3 to 3.5 Inches round
Soil ph: 6.0 - 7.0 Acceptable. 5.8 to 6.8. is optimal.
The Watermelon Radish is a mild-flavored heirloom. A winter radish originating in the far east. The Asians refer to these types of Radishes as 'Daikon' ,a mutation of a Japanese word meaning Large Root.
Daikon Radishes do not have the peppery hot taste we are accustomed to in standard radish varieties. They still have a hint of it, but not nearly as harsh.
Growing watermelon radish is no different from other radish cultivars See - Radish Planting Guide.
They take a tad longer to mature than many other varieties, about 65 days. Plant them in early spring to leave time for a second planting in late to mid spring. In milder climates they can be planted every two weeks.