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The CAL Sweet Supreme Watermelon (Citrullus lanatus) is a high-yielding hybrid variety known for its extra-sweet flavor, crisp red flesh, and thin, smooth rind. Grown from non-GMO seeds, this watermelon variety thrives in warm, sunny regions and is celebrated for its disease resistance and consistent size. Ideal for both home gardeners and small-scale farmers, CAL Sweet Supreme produces juicy, firm melons that store and transport well—making it a top choice for summer harvests.
Superior Sweetness: Deep red, crisp, and sugary flesh.
High Yielding Variety: Produces uniform, large melons up to 25–30 lbs.
Disease Resistant: Tolerant to anthracnose and fusarium wilt.
Non-GMO Seeds: Naturally bred for purity and performance.
Excellent Storage: Holds firmness and sweetness post-harvest.
Heat & Drought Tolerant: Ideal for warm, dry growing conditions.
Scientific Name: Citrullus lanatus
Common Name (U.S.): CAL Sweet Supreme Watermelon
Seed Type: Non-GMO, Open-Pollinated (Hybrid variety)
Plant Type: Annual Fruit Vine
Fruit Weight: 25–30 lbs per melon
Fruit Shape: Oval to slightly oblong
Flesh Color: Bright Red
Rind: Thin, light green with dark green stripes
Flavor Profile: Exceptionally sweet and crisp
Sunlight Requirement: Full Sun (6–8 hours daily)
Soil Type: Well-drained sandy or loamy soil
Soil pH: 6.0–7.5
Watering Needs: Moderate; deep watering during fruiting
Temperature Range: 70°F–95°F (21°C–35°C)
USDA Hardiness Zones: 3–11 (warm-season annual)
Days to Germination: 7–14 days
Days to Harvest: 85–90 days
Spacing: 3–4 feet apart in rows 6–8 feet apart
Pollination: Insect-pollinated
Organic Status: Non-GMO
Special Traits: High sugar content, strong disease resistance, heat-tolerant
Soil Preparation: Choose a sunny location with well-drained soil. Enrich with compost or organic matter.
Sowing Depth: Plant seeds 1 inch deep, 2–3 seeds per hill.
Temperature: Ideal germination temperature is 75°F–85°F (24°C–29°C).
Thinning: After seedlings reach 3 inches tall, thin to the strongest plant per hill.
Watering: Provide consistent moisture during flowering and fruiting, avoid waterlogging.
Mulching: Apply mulch to retain moisture and prevent weeds.
Harvesting: Harvest when tendril near fruit stem dries and rind turns dull.
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