How much sun does Hammock viper's-tail need?

Hammock viper's-tail grows best in full sun conditions.

When does Hammock viper's-tail bloom?

Hammock viper's-tail blooms in April, May, June, July, August, and September.

Where is Hammock viper's-tail native?

Hammock viper's-tail (Pentalinon luteum) is native to FL, per the World Checklist of Vascular Plants (Kew).

What pollinators does Hammock viper's-tail attract?

Hammock viper's-tail draws bees and butterflies.

Hammock viper's-tail

Name: Pollinator Patch
Author: Pollinator Patch

Pentalinon luteum

Last reviewed: October 2026

Hammock viper's-tail (Pentalinon luteum) is a perennial vine native to FL. It blooms in April, May, June, July, August, and September. The flowers draw bees and butterflies.

Toxicity unknown

Hammock viper's-tail (Pentalinon luteum) 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

low

Size

36"–120" H × 36"–120" W

Bloom

Apr, May, Jun, Jul, Aug, Sep

Native to

Pollinators

bees, butterflies

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Browse plants for this ecoregion

Southern Coastal Plain Southern Florida Coastal Plain

A twining vine called wild allamanda, with glossy dark green leaves and large trumpet-shaped bright yellow flowers over a long warm-season bloom. Needs a trellis or fence to stay tidy rather than sprawling.

Growing Hammock viper's-tail

Grow Hammock viper's-tail in full sun and low water. Mature plants reach 36 to 120 inches tall and spread 36 to 120 inches wide.

Wildlife value

Its long bloom season provides a steady nectar source for bees and butterflies through most of the growing season.

Common questions

How much sun does Hammock viper's-tail need?: Hammock viper's-tail grows best in full sun conditions.
When does Hammock viper's-tail bloom?: Hammock viper's-tail blooms in April, May, June, July, August, and September.
Where is Hammock viper's-tail native?: Hammock viper's-tail (Pentalinon luteum) is native to FL, per the World Checklist of Vascular Plants (Kew).
What pollinators does Hammock viper's-tail attract?: Hammock viper's-tail draws bees and butterflies.

Native range data from the World Checklist of Vascular Plants (Kew). 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.

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