Citrullus lanatus 'Blacktail Mountain'

Family: Cucurbitaceae (koo-ker-bih-TAY-see-ee) (Info)
Genus: Citrullus (SIT-ruh-lus) (Info)
Species: lanatus (la-NA-tus) (Info)
Cultivar: Blacktail Mountain
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36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)


15-18 in. (38-45 cm)

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

Sun Exposure:

Full Sun

Bloom Color:

Bright Yellow

Days to Maturity:

61 to 70 days

Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Propagation Methods:

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Remove fleshy coating on seeds before storing

Allow unblemished fruit to ripen; clean and dry seeds

Ferment seeds before storing

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

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:

Glendale, Arizona

Tucson, Arizona

Mountain View, California

Miami, Florida

Wilsonville, Oregon

Marysville, Washington

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Gardeners' Notes:


On Mar 3, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

History: Developed by SSE member Glenn Drowns. He developed it when he lived in northern Idaho, where summer nights average 43 degrees!! SSE says it also does well in hot humid areas.


On Aug 2, 2005, JerseyGardener1 from Deal, NJ wrote:

Blacktail mountain is an extra early watermelon develops in Iowa USA by Glenn Drowns .... called "blacktail" because the seeds have a black marking at one end different from other watermelon seeds thus the "black tail". It is a small to medium sized (8-12 pounds) watermelon with standard pink flesh and dark green soild rind. It is one of the earliest watermelons in existence.... certainly one of the earliest heirlooms it ripens in (about) 70 days.


On Jul 2, 2005, PurplePansies from Deal, NJ (Zone 7a) wrote:

Blacktail mountain is an heirloom cultivar from the United States. It is supposed to be a smaller watermelon with good flavor. It is supposed to be early ripening. The name comes from the seeds which have characterisitc black "tails" or bumps on the ends. I am currently growing this variety so will not give rating untill harvest.