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Watermelon 'Black Diamond'

Citrullus lanatus

Family: Cucurbitaceae (koo-ker-bih-TAY-see-ee) (Info)
Genus: Citrullus (SIT-ruh-lus) (Info)
Species: lanatus (la-NA-tus) (Info)
Cultivar: Black Diamond
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6-12 in. (15-30 cm)


10-12 ft. (3-3.6 m)

Sun Exposure:

Full Sun

Bloom Color:

Bright Yellow

Days to Maturity:

Unknown - Tell us

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Propagation Methods:

From seed; direct sow after last frost

Seed Collecting:

Properly cleaned, seed can be successfully stored

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


This plant has been said to grow in the following regions:

Brooksville, Florida

Augusta, Georgia

Mauckport, Indiana

Benton, Kentucky

Laurel, Mississippi

Lucedale, Mississippi

Efland, North Carolina

Monroe, North Carolina

Johns Island, South Carolina

Selmer, Tennessee

Freeport, Texas

Liberty, Texas

Troy, Virginia

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Gardeners' Notes:


On Jul 5, 2009, WillowWasp from Jones Creek, TX (Zone 9a) wrote:

One of the best of the best Watermelon, good texture and sooo sweet when pick ripe. I love this one and only compare it to Charleston Grey the other good melon.


On Apr 16, 2004, melody from Benton, KY (Zone 7a) wrote:

One of the most popular market melons in this area.

Easy to grow and tasty. A great old variety that has been cultivated in this area for many years.


On Oct 28, 2003, Farmerdill from Augusta, GA (Zone 8a) wrote:

This a large dark green, round melon. Clara Lee, Cannonball, Florida Giant seem to be selected strains of this melon. Averages 35 lbs, but can be pushed to 60 lbs through pruning. It produces well on all soils and is more suitable on heavier soils than long types. As a youth in piedmont Va, we could only successfully grow the round types of watermelon. Good flavor but not as sweet as the newer varieties.