Black Diamond
Watermelon · Standard (Full-Size)
Heirloom
Citrullus lanatus
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Cucurbitaceae (Gourd family) · Genus: Citrullus
About
What would a summer be without watermelon? Black Diamond is sweet and juicy, averaging 35 to 40 lbs. The rind is nearly black, which makes it bruise resistant. Watermelon contain cancer-fighting antioxidants. How can you resist growing one?
Characteristics
Color
Red
About the Plant
Life Cycle
Annual
❄
Hardiness
Warm-Season/Very Tender
☀
Exposure
Full Sun
💧
Moisture
Evenly Moist but Well Drained
🌱
Germination
7–14 days
at 70–105 °F
⏳
Days to Maturity
90 days
Mature Spread
10–15 ft
⚖
Fruit Weight
560–640 oz
How to Plant
🏠
Start Indoors
0-2 Weeks Before Last Frost
Transplant
2-4 Weeks After Last Frost
🌸
Direct Sow (Spring)
2-4 Weeks After Last Frost
Planting Depth
0.5 in
Seed Spacing
72–96 in
Row Spacing
36 in
Thin To
72–96 in
🌡
Optimal Soil Temp
70–95 °F
🌡
Soil Temp
70–105 °F
🌡
Air Temp
32–90 °F
When to Plant in Your Area
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Planting and Care Instructions
Harvest watermelon when the bottom of the melon is yellow and when the little "curlicue" of the stem dries up.
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