Charleston Grey

Watermelon

95d to harvest

Sink your teeth into Charleston Grey’s sun-warmed sweetness—its flesh is a vivid, blushing red with a crisp, juicy bite that feels cool and refreshing straight from the garden. The rind shows classic picnic-watermelon charm: bold, smoky green striping over a deep gray-green ground, built for satisfying heft and easy slicing. Grow Charleston Grey for backyard gatherings and for showy, slice-ready fruit that turns every warm day into a celebration of color and flavor.

Crop Dates

Milestone	Date
Start Indoors	May 29th
Last Frost	May 15th
Transplant / Sow Outdoors	Jun 12th
Harvest Begins	Sep 15th
Harvest Ends	Sep 1st

Crop Details

Trait	Value
Days to Maturity	95
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	75
Min Soil Temp (°F)	70
Min Night Temp (°F)	55
Harden Off (days)	10

Recommended Companions

Hickory King Corn

Alaska Nasturtium Nasturtium

Moonsong Deep Orange Marigold

Whirlybird Mahogany Nasturtium

Country Gentleman Corn

Red Gem Marigold

Frequently Asked Questions

What’s the most common disease/pest issue for Citrullus lanatus (watermelon) and how do I control it?

In warm, humid weather, watermelon commonly develops powdery mildew (white dusting on leaves), which reduces fruit size if it spreads early. Start by spacing vines for airflow and removing heavily infected leaves; apply an approved sulfur-based fungicide early at the first sign and repeat according to the label. Watch also for aphids and manage them by spraying off early infestations with a strong jet of water and using insecticidal soap if needed.

How often should I water Charleston Grey watermelon during the main growing phase?

During the main vine growth and leading up to fruit set, keep the soil consistently moist but not waterlogged—about 1–2 inches (2.5–5 cm) of water per week depending on heat, with deeper watering 2–3 times rather than daily sprinkles. Once fruits begin enlarging, maintain even moisture to prevent uneven growth and splitting, and reduce slightly only if the soil stays wet or heavy rain is frequent.

How can I tell when Charleston Grey (Citrullus lanatus) is ready to harvest?

Harvest at about 95 days from sowing and confirm ripeness by looking for a yellow, creamy field spot where the fruit rests on the ground rather than a pale green one. The tendril closest to the fruit should turn brown and dry, and the fruit should sound hollow when tapped lightly. Avoid picking early—watermelons (Citrullus lanatus) won’t sweeten much after harvest.