Plant Guide
 
vegetable

Black Diamond Watermelon

Citrullus lanatus 'Black Diamond'

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Black Diamond Watermelon (Citrullus lanatus 'Black Diamond') at Walter's Greenhouses

Black Diamond Watermelon fruit and flesh

Black Diamond Watermelon fruit and flesh

(Photo courtesy of NetPS Plant Finder)

Height:  18 inches

Spacing:  3 feet

Sunlight:  full sun 

Hardiness Zone:  (annual)

Description:

A vigorous heirloom variety; produces large oblong, 30-50lbs melons with dark green-almost black rind; sweet, juicy and fine textured, boasting gorgeous crimson red flesh, perfect for a delicious snack, juicing and fruit salads

Edible Qualities

Black Diamond Watermelon is an annual vegetable plant that is typically grown for its edible qualities. It produces large dark green oblong fruit with black overtones and crimson flesh which are typically harvested when mature. The fruits have a sweet taste and a juicy texture.

The fruit are most often used in the following ways:

  • Fresh Eating
  • Eating When Cooked/Prepared
  • Juice-Making

Planting & Growing

Black Diamond Watermelon will grow to be about 18 inches tall at maturity, with a spread of 8 feet. When planted in rows, individual plants should be spaced approximately 3 feet apart. Because of its vigorous growth habit, it may require staking or supplemental support. This vegetable plant is an annual, which means that it will grow for one season in your garden and then die after producing a crop.

This plant is typically grown in a designated vegetable garden. It should only be grown in full sunlight. It does best in average to evenly moist conditions, but will not tolerate standing water. This plant is a heavy feeder that requires frequent fertilizing throughout the growing season to perform at its best. It is not particular as to soil pH, but grows best in rich soils. It is somewhat tolerant of urban pollution. Consider applying a thick mulch around the root zone over the growing season to conserve soil moisture. This is a selected variety of a species not originally from North America.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Garden 
Applications
Vegetable 
Ornamental Features