Alamo Vine

Alamo Vine (Merremia dissecta) 

Scientific Name: Merremia dissecta
Common Names: Alamo Vine, Noyau Vine, White Morning Glory

Native to: Southern United States, Mexico, Central and South America (Texas)
Lighting Requirements: Full sun to partial shade
Height: 10 to 15 feet (as a climbing vine)
Width: Spreads indefinitely if not managed
Winter Look: Deciduous; dies back to the ground in cold climates but regrows in spring in its hardiness range
Seasonal Interest: Delicate, white, funnel-shaped flowers with a purple throat bloom from summer to early fall; deeply lobed, bright green foliage adds texture to the landscape
Drought Tolerance: Moderate; prefers consistent moisture but tolerates short dry periods once established
Soil Requirements: Well-drained, sandy or loamy soils
pH Range: Slightly acidic to neutral (6.0–7.5)
Hardiness Zones: USDA Zones 8–11; may grow as an annual in colder regions
Deer Resistance: Moderate; deer may browse but usually avoid it
Attracts: Bees, butterflies, and other pollinators
Potential Issues: Can self-seed prolifically, becoming invasive in some areas; may require pruning to manage growth
Notes: Alamo Vine is a fast-growing, twining vine ideal for adding a touch of delicate beauty to gardens. Its attractive white flowers with a purple throat resemble morning glories and open in the morning, closing by afternoon. This native plant is well-suited for fences, trellises, and arbors, where it can climb and showcase its graceful blooms. Its vigorous nature and ability to self-seed make it easy to establish but require careful management to prevent it from spreading excessively.

Alamo Vine is a valuable addition to native or wildlife-friendly gardens, as it supports pollinators while adding vertical interest to the landscape. It thrives in sunny, well-drained sites and is a low-maintenance choice for gardeners looking to enhance their spaces with an airy, naturalistic vine.

I worked at a nursery that grew this vine on the front fence. It was beautiful! We gave seeds away all the time.