Radish

At a glance

USDA Zones

2–10

Sun

Full sun (6+ hrs)

Water

Medium — water when top inch of soil is dry

Soil

Loam, sandy

pH

Neutral

Spacing

3 in. between plants

Per square foot

16 plants per square

Days to maturity

About 25 days

Planting & harvest windows

Northern Hemisphere timing. Adjust ±4–6 weeks based on your last/first frost dates.

Good companions

• 
  Lettuce

  Radishes mature fast and mark the row before lettuce fills in.

• 
  Cucumber

  Radishes deter cucumber beetles, and they mature in 3–4 weeks — long before the cucumber vines spread to fill the space.

• 
  Pea
• 
  Spinach

Keep apart from

• 
  Hyssop

Recommended varieties

• Cherry Belle

  22 daysseed

  Round, crisp, mild — ready in 22 days.

• French Breakfast

  25 daysseed

  Long, pink-and-white, slightly milder.

• Easter Egg

  28 daysseed

  Mix of purple, pink, red, and white roots.