Growing Radish Japanese White is easy, quick, and super rewarding—especially during the cooler months. Here’s a complete guide to help you grow crisp, juicy radishes at home. Here’s a full easy-to-follow guide:
Best Time to Sow
October to February (cool season is best).
Radishes need cooler weather for sweet, tender roots.
Container
Depth: At least 12–15 inches deep (very important for long roots!).
Width: Wider pots = more plants.
Must have good drainage holes.
Prepare the Soil
Radish roots need loose, fertile, well-draining soil to grow long and straight.
Soil Mix:
50% garden soil
30% compost/vermicompost
20% sand or cocopeat
➡️ The soil should feel soft and crumbly (not hard or sticky).
Sowing Seeds
Make small furrows (1 cm deep).
Sow seeds directly into the container — no need to transplant later.
Cover lightly with soil.
Water gently but thoroughly.
➡️ Space seeds about 2 inches apart.
Sunlight
Needs full sun — at least 5–6 hours daily.
Watering
Keep the soil consistently moist.
Water when the top layer feels dry.
Don't flood — roots may rot if overwatered.
Thinning
After seedlings appear (5–7 days), thin them out:
Keep one healthy plant every 4 inches.
This gives each radish enough room to grow thick and long.
Fertilizing
Add some extra compost around plants after 10–15 days.
Avoid chemical fertilizers heavy in nitrogen — they cause leafy growth, not root growth.
Harvesting
Harvest in 50–60 days after sowing.
When the top of the radish starts showing and is about 1–2 inches thick, pull it out.
Don't wait too long — they can get woody or crack if overgrown