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Watermelon Radish (37 Days)

This large, white skinned radish with greenish shoulders has a bright red interior that looks like a watermelon when sliced. The flavor is mild and sweet. While it will grow to the size of a turnip it is best eaten when smaller. Prefers a cooler climate, so plant this seed mid-summer for a late fall/early winter harvest. 

300 seeds


Raphanus sativus

Germination: 5-7 days

Germination Temperature: Optimum soil temperatures 60-75ºF.

Seed Sowing Depth: 1/2" deep

Sowing Outdoors: Starting in early spring. Sow 1/2-1" apart ,thin to 1-2" apart, soon after the seedlings emerge.

How much does a packet plant: 18-24 foot single row

Harvest: 3-4 weeks after planting at 1” in diameter, pull them promptly as they rapidly decline, becoming tough and pithy

Tips: They need rapid growth for optimum results. Provided fertile soil and consistent moisture. For a continuous harvest make successive plantings every 7-10 days when weather is still cool. 

Customer Reviews

Based on 8 reviews Write a review
Customer Reviews
4.4 Based on 7 Reviews
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  • daikon radishs
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  • bumper crop
Tim R.
United States
I recommend this product

fine,just fine!!

Terry H.
United States
I recommend this product
good seeds

too cold to plant still but looking forward to it.

Paul O.
United States
I recommend this product
Daikon Radish

Your selection of daikon radishs are the best! I have another bumper crop.

Pinetree Garden Seeds Watermelon Radish (37 Days) Review
Kate E.
United States
Watermelon radish

I shared seeds with two friends , we are in 3 different growing zones. Radishes germinated quickly, tops grew quickly but none of us ever had radishes develop. We started seeds indoors and direct sowed. Same results for both - very disappointing

Pinetree Garden Seeds

Hi Kate, I'm sorry that you had problems with the Watermelon Radish. There are a few things that can cause a radish not to produce a bulb. They like to grow in cooler temperatures. If you experienced a drastic change from cool to very hot, they will just bolt. Another may be that there is too much nitrogen in the soil. One more reason, that the soil is not loose. If you have clay like soil, they won't have enough room to spread. Hope this helps, Pinetree Garden Seeds

Cool color with exceptional flavor and size

Fast-growing and no bugs, yet. Can get huge and still taste great. Not too spicy.