Whitwam Organics
Melon- Florida Giant Watermelon (Florida heirloom)
Melon- Florida Giant Watermelon (Florida heirloom)
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Watermelon-Florida Giant
Citrullus lanatus
One of the best round open-pollinated watermelons, these are beautiful, average up to 50-pound melons with smooth dark green rinds that can measure over 15" in diameter. The bright red flesh is firm, sweet, and delicious. This is a popular variety for home and market gardens in the South. It is a good shipper and is ready in 90 days.
Seed expert Melville Dillon developed and introduced this watermelon in the 1940s, naming it for his native Florida. Florida Giant has been known to reach a weight of 80-90 pounds, and is one of the most popular giant watermelons.
| Days to germination | 4-7 days |
| Days to maturity | 70 - 110 days |
| Life cycle | annual |
| Plant time/Harvest | March - June for summer harvest, August for Fall harvest |
| Spacing | 8' |
| Sun | full sun |
| Soil temperature | 80 - 85 F |
| Optimum soil P.H | 6 - 6.5 |
| Height | 6" - 12" |
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Over 800 5-Star Google Reviews
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★★★★★
“All items arrived quickly and well packaged. I usually expect to have one or two live items out of a batch, but they are all thriving. I couldn’t be happier!”
David L.August 2026 -
★★★★★
“My live plants were packed like they belonged in Ft Knox. 😂 They really were packed beautifully. Only one plant, a bee balm, is questionable but signs that it will recover are happening. All in all I am thrilled with my plants and seeds. Some of my coreopsis have already sprouted!”
Jacquie R.September 2026 -
★★★★★
“Plants were ready quick at a good price with great packaging. Very happy with my purchase.”
Will B.May 2026 -
★★★★★
“I’ve ordered seeds from Whitwam Organics 3 or 4 times now. I love the simple packaging, clear planting guidelines, and variety they offer. Great germination rates!! The bare root plants I’ve ordered have come healthy, so healthy that the wild rabbits always approve of my menu upgrades! 😂🐰”
Chanda B.August 2026