White twinevine
Funastrum clausum
Last reviewed: September 2026
White twinevine (Funastrum clausum) is a perennial vine native to FL, TX. It blooms in May, June, July, and August. The flowers draw bees and wasps.
Toxicity unknown
White twinevine (Funastrum clausum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
medium
Size
36"–120" H × 36"–120" W
Bloom
May, Jun, Jul, Aug
Native to
FL, TX
Pollinators
bees, wasps
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 458 programs across 44 states, each with a link to the provider and the date we last checked it.
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A twining milkweed vine with narrow leaves and clusters of small white star-shaped flowers through summer. Its climbing, spreading habit means it needs a trellis or fence to look tended.
Growing White twinevine
Grow White twinevine in full sun and medium water. Mature plants reach 36 to 120 inches tall and spread 36 to 120 inches wide.
Wildlife value
Host plant for monarch, queen.
A larval host plant for monarch and queen butterflies, whose caterpillars feed on the milky sap.
Common questions
- How much sun does White twinevine need?
- White twinevine grows best in full sun conditions.
- When does White twinevine bloom?
- White twinevine blooms in May, June, July, and August.
- Where is White twinevine native?
- White twinevine (Funastrum clausum) is native to FL, TX, per vouchered herbarium specimen records and regional native plant society lists.
- What butterflies or moths does White twinevine host?
- White twinevine is a larval host plant for monarch and queen.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow White twinevine? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.