Propagate guide

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Watering mastery

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Fertilizer mystery reveal

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Tips & tricks for cutting

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Plant pot secrets

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Common pests

Frequent diseases

Botanist’s tips

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Popularity

Maintain consistent irrigation as the radishes grow.

Water

Light green to white outside deepens in color when exposed to sunlight, giving this radish its namesake. In general, these plants prefer bright light conditions.

Sunlight

Radishes thrive in well-drained, fertile, deep, sandy soil rich in organic matter.

Soil

Prior to sowing watermelon radish seeds, you may want to amend the soil with 2-4 inches of well composted organic matter and 2-4 cups of all purpose fertilizer (16-16-8 or 10-10-10) per 100 square feet, especially if your soil tends to be heavy.

Fertilizer

Radish seeds can be sown directly into the garden when soil temps are 40°F (4°C) but germinate best at 55-75°F (12-23°C).