GardenWatermelon variety
Stone Mountain Watermelon
✓ In your garden
Stone Mountain is a picnic watermelon, ready in about 80–95 days. It makes big picnic-sized melons. Watermelons need a long, hot summer, full sun, and room to run — plant well after frost. It’s ripe when the curly tendril nearest the fruit dries brown and the ground spot turns creamy yellow.
“A sweet summer watermelon for a long, hot season.”
Growing basics — shared by every watermelon
Stone Mountain grows like any other watermelon. The full picture — how deep to plant, spacing, feeding, pests, harvest — lives on the Watermelon page so it's maintained in one place.
- Sun
- Full Sun
- Spacing (in row)
- 36–60 in
- Row spacing
- 72–96 in
- Planting depth
- 1–2 in
- Soil pH
- 6–7
- Water
- Moderate
What is Stone Mountain good for?
- Fresh & chilledStraight from the fridge. Great
- Juice & agua frescaBlend and strain. Great
- Pickled rindA Southern tradition — for the rind. Skip it
From how it grows — kitchens vary.
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Want the full 10/50/90% odds + nearest stations? Open the frost tool →When to plant Stone Mountain in your zone
Zone 6bGreenhouse or cover on: your start slides ~4 weeks earlier and your harvest stretches ~3 weeks later (shown striped).
Planting seeds straight in the ground only works where the season's long and warm — most gardeners start seeds indoors or buy young plants, or you'd pick your first tomato right as frost hits.
Comfortable — first ripe fruit lands around mid Jul, well before your typical frost (~late Oct).
- Start seeds indoors
- mid Mar – late Mar
- Toughen up outside
- mid Apr – late Apr
- Move plants outside
- late Apr – early May
- Plant seeds outside
- late Apr – early May
- Growing
- early May – mid Jul
- Picking
- mid Jul – mid Aug
Typical dates for zone 6b — set your zone or ZIP above for yours.
Growing Stone Mountain — the things that trip people up
- Melons are heat-lovers with big appetites — give them full sun, rich soil, room to sprawl, and a long warm season. In short-season areas, start them indoors and use black plastic or a cover to warm the soil.
- Ease off the water as the fruit ripens — too much late water dilutes the sugar. Judge ripeness by the dried tendril and the creamy-yellow ground spot, not by thumping.
Stone Mountain watermelon at a glance
| Type | Picnic |
|---|---|
| Days to ripe | 80–95 days after you plant it outside |
| Color | Red |
Extra fields from seed-catalog listings and university growing guides. Days to ripe and disease resistance shift with your climate and seed source — double-check with your local extension office before you buy.
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Common questions about Stone Mountain
How long does Stone Mountain take to grow?
About 80–95 days, and it wants that whole stretch warm — start early in short-season areas.
How do I know Stone Mountain is ripe?
When the curly tendril nearest the fruit dries brown and the spot where it sits on the ground turns from white to creamy yellow.
Browse more watermelon varieties →