Crimson Sweet Watermelon (Citrullus lanatus 'Crimson Sweet')

Crimson Sweet Watermelon

Citrullus lanatus 'Crimson Sweet'

Juicy sun-ripened flesh delivers summer sweetness. Vining annual fruiting plant; common name: Crimson Sweet Watermelon.

Full sun
2–3/week
Moderate
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Plant Needs

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Sunlight Full direct sunlight required for optimal fruit development; partial shade reduces yield and fruit sweetness
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Watering Keep soil consistently moist during fruit formation; avoid overwatering to prevent fruit splitting and root rot
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Temperature Warm-season crop; requires daytime temperatures above 21°C for successful fruit set; intolerant of frost
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Characteristics

  • Leaf: Large, deeply lobed, hairy green leaves with rough, sandpaper-like texture
  • Flower: Small yellow monoecious blooms (separate male and female flowers on the same vine)
  • Fruit: Round to oblong rind with dark green stripes; bright red, crisp, sweet flesh
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Care Guide

Watering

Water deeply at the base to keep soil evenly moist; avoid wetting foliage to prevent fungal disease

Fertilization

Apply balanced granular fertilizer at planting; side-dress with nitrogen-rich feed 3 weeks after germination. Avoid over-fertilizing with nitrogen to prevent excessive vine growth at the expense of fruiting

Banana peel compost tea:Use fully composted banana peels; dilute 1:20 with water for root drenching to avoid pest infestations from raw organic matter
Pruning
  • Trim excess side vines to redirect energy to fruiting stems and improve airflow
  • Remove yellowing or diseased foliage to reduce fungal disease risk
  • Pinch off early blooms to encourage stronger vine growth before initiating fruiting
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; no known adverse effects from ingestion of flesh or foliage

Humans: Non-toxic; edible flesh and cooked rind are safe for human consumption

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Garden Uses & Culture

Culture: Symbol of summer refreshment and backyard gardening in North America and Europe

Usage: Edible sweet fruit; vining foliage used as decorative ground cover or trellis plant