Photo by Melody

PlantFiles: Alamo Vine
Merremia dissecta

Family: Convolvulaceae (kon-volv-yoo-LAY-see-ee) (Info)
Genus: Merremia (me-REE-mee-uh) (Info)
Species: dissecta (dy-SEK-tuh) (Info)

Synonym:Ipomoea sinuata

14 members have or want this plant for trade.

Tropicals and Tender Perennials
Vines and Climbers

8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)

6-8 ft. (1.8-2.4 m)

USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Seed is poisonous if ingested

Bloom Color:
Magenta (Pink-Purple)
White/Near White

Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter
Blooms all year


Other details:
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
From seed; sow indoors before last frost
Scarify seed before sowing

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Click thumbnail
to view:

By Floridian
Thumbnail #1 of Merremia dissecta by Floridian

By htop
Thumbnail #2 of Merremia dissecta by htop

By Xenomorf
Thumbnail #3 of Merremia dissecta by Xenomorf

Thumbnail #4 of Merremia dissecta by RON_CONVOLVULACEAE

By htop
Thumbnail #5 of Merremia dissecta by htop

By arsenic
Thumbnail #6 of Merremia dissecta by arsenic

By arsenic
Thumbnail #7 of Merremia dissecta by arsenic

There are a total of 33 photos.
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1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive dmj1218 On Aug 27, 2006, dmj1218 from west Houston, TX (Zone 9a) wrote:

Alamo vine is a white perennial morning glory that opens around noon and then closes before sunset. It is a Texas native found on stream banks, shell deposits, thickets, and other disturbed areas from Travis to Galveston to Val Verde counties; as well as from Florida to Texas and into South America. It colonizes by rhizomes, stolons, self-layering, and by its taproot in sandy, loamy, clay, caliche, shelly, and well-drained calcareous soils. It grows very easily from fresh seed.


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

Chandler, Arizona
Glendale, Arizona
Phoenix, Arizona
Tucson, Arizona (2 reports)
Menifee, California
Bartow, Florida
Dunnellon, Florida
Melbourne, Florida
Merritt Island, Florida
Orange Park, Florida
Orlando, Florida
Panama City Beach, Florida
Sebastian, Florida
Spring Hill, Florida
Tallahassee, Florida
Trenton, Florida
Zephyrhills, Florida
Atlanta, Georgia
Boulder City, Nevada
North Augusta, South Carolina
Westmoreland, Tennessee
Austin, Texas (2 reports)
Boerne, Texas
Dripping Springs, Texas
Floresville, Texas
Harlingen, Texas
Houston, Texas (2 reports)
Jacksonville, Texas
La Vernia, Texas
Linden, Texas
Mcallen, Texas
San Antonio, Texas (2 reports)

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