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.

Key Features

• 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.

Specifications

• 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

Planting Guide

1. Soil Preparation: Choose a sunny location with well-drained soil. Enrich with compost or organic matter.

2. Sowing Depth: Plant seeds 1 inch deep, 2–3 seeds per hill.

3. Temperature: Ideal germination temperature is 75°F–85°F (24°C–29°C).

4. Thinning: After seedlings reach 3 inches tall, thin to the strongest plant per hill.

5. Watering: Provide consistent moisture during flowering and fruiting, avoid waterlogging.

6. Mulching: Apply mulch to retain moisture and prevent weeds.

7. Harvesting: Harvest when tendril near fruit stem dries and rind turns dull.