85-95days to harvest
4-12days to germinate
Z5–11USDA zones
Moderatedifficulty
Heirloom

Sowing

Direct sow when soil reaches 70°F. Plant 4-6 seeds per hill, thin to 2-3 strongest seedlings. Requires long growing season.

Cultivation

Sun
Full sun (6+ hours)
Water
1-2 inches per week, deep watering preferred
Soil
Deep, well-drained sandy loam with high organic matter
Soil pH
6.0-7.0
Spacing
72-96 inches
Height
4-8 inches
Season
Warm season

Appearance & flavour

Colour
Gray-green skin with red flesh and dark seeds
Size
25-40 lbs
Shape
Elongated oval
Flavour
Sweet and refreshing with firm, crisp texture

In the kitchen

Fresh eating, large gatherings, juice, preserves

Pests, disease & resistance

Pests
Cucumber beetles, squash vine borers, aphids
Diseases
Powdery mildew, bacterial fruit blotch, gummy stem blight
Resistance
Excellent resistance to anthracnose and fusarium wilt

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
2May – JuneJulyJuly – AugustOctober – September
3MayJune – JulyJune – AugustOctober
4April – MayJuneJune – JulySeptember – October
5AprilMay – JuneMay – JulySeptember – October
6AprilMay – JuneMay – JulySeptember – October
7March – AprilMayMay – JuneAugust – October
8MarchApril – MayApril – JuneAugust – September
9FebruaryMarch – AprilMarch – MayJuly – August
10January – FebruaryMarchMarch – AprilJune – August
11JanuaryFebruaryFebruary – MarchMay – July
12JanuaryFebruaryFebruary – MarchMay – July
13JanuaryFebruaryFebruary – MarchMay – July

Companion planting

8 beneficial pairings indexed for this variety, 3 to avoid.

NasturtiumsTrap crop for cucumber beetles and squash bugs, deters aphids
MarigoldsRepel nematodes and cucumber beetles with strong scent
RadishesDeter cucumber beetles and squash vine borers, loosen soil
CornProvides natural trellis and wind protection for sprawling vines
Bush BeansFix nitrogen in soil and don't compete for ground space
CatnipRepels ants, aphids, and cucumber beetles effectively
OreganoDeters pests and may enhance fruit flavor through companion effects
SunflowersAttract beneficial insects and provide shade during hottest part of day

Avoid

Black WalnutReleases juglone toxin that inhibits melon growth and development
FennelAllelopathic properties inhibit growth of most cucurbits including watermelons
PotatoesCompete for nutrients and may harbor similar pests like cucumber beetles

Nutrition (per 100 g)

Calories (per 100 g)
30
Protein (g)
0.61
Fat (g)
0.15
Carbohydrate (g)
7.55
Fibre (g)
0.4
Sugars (g)
6.2
Vitamin A (µg)
28
Vitamin C (mg)
8.1
Vitamin E (mg)
0.05
Vitamin K (µg)
0.1
Vitamin B6 (mg)
0.045
Folate (µg)
3
Calcium (mg)
7
Iron (mg)
0.24
Magnesium (mg)
10
Phosphorus (mg)
11
Potassium (mg)
112
Zinc (mg)
0.1
Selenium (µg)
0.4

Where to buy seed and equipment

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Growing it? There is a full cultivation guide at the melons growing guide.

Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.

DarkGrow forum

Grown Watermelon Charleston Gray?

Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.

Similar varieties

Other melons with a comparable time to harvest, so a season that suits Watermelon Charleston Gray suits these too.

Browse all 38 melons