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PlantFiles: Watermelon
Citrullus lanatus 'Black Diamond'

Family: Cucurbitaceae (koo-ker-bih-TAY-see-ee) (Info)
Genus: Citrullus (SIT-ruh-lus) (Info)
Species: lanatus (la-NA-tus) (Info)
Cultivar: Black Diamond

» View all varieties of Melons

5 members have or want this plant for trade.


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:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

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

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By onalee
Thumbnail #1 of Citrullus lanatus by onalee

By onalee
Thumbnail #2 of Citrullus lanatus by onalee


3 positives
No neutrals
No negatives

Gardeners' Notes:

Positive WillowWasp 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.

Positive melody 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.

Positive Farmerdill 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.


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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