Several Jyunpaku Okinawan Pure White Bitter Melons in a wood bowl on a white background.
Bitter Melon Seeds, Jyunpaku Okinawan Pure White
Jyunpaku Okinawan Pure White Bitter Melons in a wooden box with slices, seeds and foliage.
A single Jyunpaku Okinawan Pure White Bitter Melon growing on vine in the garden.
A man holding Jyunpaku Okinawan Pure White Bitter Melons in bowl.
Jyunpaku Okinawan Pure White Bitter Melons with pickled bitter melon filling.
Several Jyunpaku Okinawan Pure White Bitter Melons in a wood bowl on a white background.
Bitter Melon Seeds, Jyunpaku Okinawan Pure White
Jyunpaku Okinawan Pure White Bitter Melons in a wooden box with slices, seeds and foliage.
A single Jyunpaku Okinawan Pure White Bitter Melon growing on vine in the garden.
A man holding Jyunpaku Okinawan Pure White Bitter Melons in bowl.
Jyunpaku Okinawan Pure White Bitter Melons with pickled bitter melon filling.

Bitter Melon Seeds,
Jyunpaku Okinawan Pure White

4.529 ReviewsSKU: #BM117Min. seed count: 6
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Description

(Momordica charantia). A natural marvel, the purest white bitter melon variety we know, it reminds us of the elegant white pearls found off the coast of Okinawa. The most stunning edible ornamental, this extra large and mild Japanese bitter melon bears pearly white, mellow-flavored fruit. While refined and less bitter, it is still quite nutritionally potent and health promoting. Okinawan bitter melon has been identified as one of the key staple foods contributing to the world-famous longevity of the Okinawans. The lightly bitter flesh has been shown to have medicinal value in regulating blood sugar! But it is not just bitter! When fruit is mature, a sweet, bright red sac forms around the seeds. The seed pulp of this variety is the sweetest and best-flavored of any bitter melon we have tried! The thick fruit averages 8 to 10 inches long. The fruit is typically cut thick and added to soups or shaved thin and eaten raw; we have found the flavor to be by far the most superior of all bitter melon. This may be the truest Okinawan treasure, a beautiful secret to longevity and good health!

Growing Tips: Jyunpaku Okinawan Pure White bitter melon produces creamy-white fruits with delicate bitterness and high visual appeal. For best results, grow in nutrient-rich, well-draining soil with consistent watering. Use a strong trellis to support vigorous climbing vines. Regular harvesting encourages continual fruiting, while pruning boosts airflow and helps reduce disease risk.

Plant Details

Botanical Name
Momordica charantia
Life Cycle
Annual
Growth Habit
Vining
Sun Requirement
Full sun
Days to Germinate
7–21
Days to Maturity
75–90
Planting Depth
1 in.
Plant Spacing
24 in.
Ideal Temperature
75–90°F
Frost Hardy
No

When to Grow

Start seeds indoors 4–6 weeks before your last frost or direct sow outdoors after soil temperatures reach 70°F. Warm weather and long days are essential for healthy growth. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Soaking seeds overnight and nicking or splitting the tough outer seed coat may improve germination. Sow 1/2 to 1 inch deep in rich, loose soil with good drainage. Space plants 24 inches apart and install trellising at planting time to support vertical growth and maintain fruit quality.

How to Grow

Water deeply and consistently, keeping the soil evenly moist. Fertilize monthly with compost or balanced organic feed. Train vines upward and prune to encourage airflow and more efficient fruit development. Inspect for pests and treat early with organic pest control methods to prevent infestations.

How to Save Seeds

  • Allow fruits to fully ripen on the vine until skin turns orange and splits.
  • Remove seeds and rinse off pulp under running water.
  • Dry seeds thoroughly in a shaded, well-ventilated area for 1–2 weeks.
  • Store in a cool, dry, dark place in an airtight container.
  • Label with date and variety name for future planting.

FAQ

What makes Jyunpaku Okinawan Pure White different from green bitter melons?

This variety stands out for its luminous white skin, slightly milder bitterness, and tender flesh. It's highly prized in culinary uses and adds aesthetic appeal to garden displays and market stands.

Can Jyunpaku be grown in containers?

Yes, it grows well in large containers (minimum 5 gallons) with rich soil and proper drainage. Provide a trellis and ensure the plant receives full sun and regular watering for healthy vine growth.

How do I know when Jyunpaku fruits are ready to harvest?

Harvest when fruits are firm, white, and around 8 to 10 inches long. Left on the vine they turn yellow-orange, soften, and split, and the flesh loses quality; that ripe stage is when the sweet red seed sacs form, and it is also the stage to let fruit reach if you want to save seed.

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