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Radish, Watermelon Seeds

Raphanus sativus
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Product Information Chevron Down Chevron Forward

Watermelon radish originates in China.

This ball-shaped radish has a unique color pattern. Its deep green shoulder, white skin, and bright red flesh will have you questioning if you're growing small watermelons! The flesh is crispy, has a mild and sweet flavor and grows best under cooler conditions. These radishes are perfect for adding color and taste to salads, stir-fries, and pickling recipes. 

  • SKU: 143797
  • Common Name: Radish
  • Botanical Name: Raphanus sativus
Growing Information Chevron Down Chevron Forward
Safe for bees
Safe
for Bees
Grow best in
Grows
Best In:
Full Sun
Days to germination
Days to
Germination:
4 - 7 days
Water needs
Water
Needs:
Average 2.5-5 cm (1-2 in.) per week
Days to maturity
Days to
Maturity:
60 days
Best container size
Best
Container Size:
30 cm+ (12 in.+)
Key Features Chevron Down Chevron Forward
  • Plant Type: Vegetable
  • Plant Lifecycle: Annual (plant every year)
  • Seed Type: Heirloom
  • Fill Weight (grams): 1.25 g
  • Approximate Seed Count: 75-80
  • Planting Method: Direct Sow
  • Water Needs: Average 2.5-5 cm (1-2 in.) per week
  • Landscape Use: Edible Garden
  • Growth Habit: Root
  • Companion Planting:

    Plant near lettuce, nasturtium, peas. Peas provide nitrogen to soil which will benefit radish.

  • Flavour: Milder and a little less peppery vs regular radish
  • Preparation Ideas: Add zip to green salads with the addition of sliced watermelon radish. To experience the full flavor use a citrus based vinaigrette.
Instructions Chevron Down Chevron Forward

Radish is a cool season crop and seeds can be sown directly in the garden in early Spring as soon as the soil can be worked. Soil temperature (not air temperature) should be between 10-16° C (50-60°F) . Space seeds and plant to the depth indicated below. Press seeds into the soil to ensure good contact and cover with 2.5 cm (1 in.) of soil. After planting, water seeds with a gentle mist or shower. It is critical to keep the soil consistently moist, but not soggy during germination. When your seedlings reach a height of a few centimetres (inches) and have developed 2 or 3 pairs of leaves, it is important to thin them out, according to the plant spacing indicated below. Crowded radishes do not grow well, and you’ll end up getting small inedible roots. Do not allow the soil to become dry, as young plants have underdeveloped roots and can quickly dehydrate, particularly in windy conditions. Weed often as weeds can quickly crowd out radishes. Radish grows quickly and more seeds can be succession planted every 10 days until the temperature exceeds 21°C (70°F). Once the temperature rises, radish tends to bolt. Planting can resume when the temperature turns cooler at the end of Summer and early Fall.

  • Planting Depth: 1.3 cm (1/2in.)
  • Seed Spacing: Sow radish seeds roughly 1.3 cm (1/2 in.) apart in rows, keeping rows approximately 30 cm (12 in.) apart.
  • Plant Spacing: 5 cm (2 in.)
  • Instructions for Nutrient Care: Apply SUPERThrive once per week. Soak in solution of 1/4 tsp per gal for 15 min. or longer depending on size and type.
Suggestions Chevron Down Chevron Forward
Growing Suggestions:
  • Consistent moisture is key. Do not let the soil dry out which can result in poor flavor and a tough texture. Soil that fts too wet can cause the roots to split and rot.
  • Do not leave radishes in the ground past their maturity; they can go from crisp and crunchy to woody and excessively spicy within a matter of days. Follow the seed packet for the number of days to maturity.
  • Hot weather can cause the plants to bolt (a flower forms and it goes to seed) and decline in quality and bulbs will stop forming. They can get tough and woody or spongy with hollow centers.

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Overall rating: 4.4 / 5 from 10 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["plants","radishes","seeds"].

Review highlights

Reviews

Wait until spring.

"I bought them for a friend and they will be planted in May. I tried some of these radishes, purchased from the grocery store and they were good."

Gayle H. (5/5)

Fantastic Radishes

"I've grown these two years in a row and while I've found they take a little longer to get to full size than described on the package, they're definitely worth it. They're a spicy radish with lots of flavour, so I chop them into matchsticks and toss them in salads. The leaves are also great for salads as they have a bit of a radish-y spice to them. Nearly every seed grows (so space them out), they're an easy crop, and I had lots to give away"

Radish123 (5/5)

Watermelon radish

"Great! I love these seeds!"

Tanya N. (5/5)

Can't wait for spring!!!

"Can't wait for spring!!!"

Marie L. (4/5)

Great seeds!

"These seeds worked out beautifully!"

Jess J. (5/5)

All seeds germinated. Can't wait

"All seeds germinated. Can't wait to taste them!"

Joan E. (4/5)

Mag

"I’ve planted this last year, the colour of flesh is beautiful. It’s delicious,juicy and crispy. The germination rate was not great though, at about 80%."

Mag (4/5)

Will give one more chance

"Not very pleased with the results. Grew long and lanky rather than round. Didn't develop much of a root before bolting. Did germinate & sprout well"

Twharp (3/5)

Watermelon Radish

"I read that they are sweeter, not the case. The red interior is more light pink.BUT, great crisp in a simple salad or taco."

Trent (4/5)

Love these radishes

"I planted these seed a few weeks ago and the plants are growing nicely."

Margaret S. (5/5)

Q&A