temperature for radish seed germination
Radishes prefer cool and moist conditions for best growth. The optimum temperature is 50 to 65 Â°F. Optimum soil temperature for seed germination is 45 to 85 Â°F. Radish seed will not germinate when the soil temperature is above 95 Â°F. Spring-planted radishes should be harvested early.The flavor of the radish bulb is also dependent on temperature. As a general rule, the cooler the temperature, the milder the radish.he optimum temperature is 50 to 65 Â°F. Optimum soil temperature for seed germination is 45 to 85 Â°F. Radish seed will not germinate when the soil temperature is above 95 Â°F. Spring-planted radishes should be harvested early.