What makes radishes grow fastest?

Radishes grow quickest with additional optimal conditions being met. With soil temperatures of 50-65°F, radishes proliferate, with loose, deep soil allowing their roots to expand unencumbered. Consistent moisture prevents stress that slows growth. Selecting and controlling the right varieties for your microclimate enables optimal growth and yield.

Water management is important for speed. Provide 1 inch of water weekly through drip irrigation or soaker hoses (measure with rain gauges placed among plants). Increase to 1.5 inches when the temperature rises above 80°F. Morning watering is the most effective way to prevent water loss due to evaporation.

Temperature control makes a world of difference. In my experience, radishes matured 30% faster at 60-degree days than at 45-degree days. Black plastic mulch can be used to increase soil temperatures in the spring. After soil temperatures exceed 75 degrees, using white mulch or shade cloth can decrease root temperatures.

Nutrient balance prevents stunted growth. To stimulate root growth, apply phosphorus-heavy fertilizer at planting. Avoid high nitrogen levels, as they promote foliage growth rather than root development. If growth begins to stall, a side-dress with compost tea at 2 weeks will help. Container plants will need liquid fertilizer every 10 days.

Thinning timing influences final yield timing. Seedlings should be snipped to their final spacing when they have developed their first true leaves. Competition reduces growth and delays maturity. Use a spacing of 3 inches for Cherry Belle. Larger varieties should be spaced 4 to 6 inches apart.

Harvest immediately when mature. Inspect daily as the roots approach their expected size. Harvesting too late creates a woody texture and slows down subsequent planting. To enjoy a rapid succession of harvests every ten days throughout the growing season.

Read the full article: When to Plant Radishes: Expert Tips