North America Native Plant

Hammock Viper’s-tail

Botanical name: Pentalinon luteum

USDA symbol: PELU3

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states âš˜ Native to Puerto Rico âš˜ Native to the U.S. Virgin Islands  

Synonyms: Urechites lutea (L.) Britton, orth. var. (URLU)  âš˜  Urechites luteus (L.) Britton (URLU3)  âš˜  Urechites lutea (L.) Britton var. sericea R.W. Long, orth. var. (URLUS)  âš˜  Urechites luteus (L.) Britton var. sericeus R.W. Long (URLUS2)  âš˜  Urechites pinetorum Small (URPI2)   

Hammock Viper’s-Tail: A Golden Gem for Your Native Garden If you’re looking to add a splash of sunshine to your Florida or Caribbean garden while supporting local wildlife, let me introduce you to hammock viper’s-tail (Pentalinon luteum). Don’t let the dramatic name fool you – this cheerful native vine is ...

Hammock Viper’s-Tail: A Golden Gem for Your Native Garden

If you’re looking to add a splash of sunshine to your Florida or Caribbean garden while supporting local wildlife, let me introduce you to hammock viper’s-tail (Pentalinon luteum). Don’t let the dramatic name fool you – this cheerful native vine is more friend than foe, bringing bright yellow blooms and ecological benefits to your landscape.

What Makes Hammock Viper’s-Tail Special?

This delightful perennial shrub is a true native treasure, naturally occurring in Florida, Puerto Rico, and the Virgin Islands. As a multi-stemmed woody plant, hammock viper’s-tail typically grows as a shrub reaching up to 13-16 feet in height, though it can climb and sprawl when given the opportunity. Its glossy green leaves provide an attractive backdrop for the star of the show – clusters of bright yellow, trumpet-shaped flowers that seem to glow in the garden.

Where You’ll Find It Growing Wild

In nature, hammock viper’s-tail thrives in the coastal hammocks and edges of South Florida and throughout the Caribbean islands. It’s perfectly adapted to the warm, humid conditions of these regions and has earned its place as a valuable native species.

Why Your Garden (and Local Wildlife) Will Love It

Here’s where hammock viper’s-tail really shines – it’s a pollinator magnet! Those sunny yellow blooms are irresistible to butterflies, bees, and other beneficial insects. If you’re working on creating a wildlife-friendly space, this native vine is an excellent choice that supports your local ecosystem.

The plant’s facultative wetland status means it’s quite adaptable, comfortable in both wetland edges and drier upland areas. This flexibility makes it a great choice for gardeners dealing with varying moisture conditions.

Perfect Garden Companions

Hammock viper’s-tail fits beautifully into several garden styles:

  • Native plant gardens where it can mingle with other Florida natives
  • Butterfly and pollinator gardens for maximum wildlife appeal
  • Coastal landscapes where it can handle salt spray and sandy soils
  • Tropical-style gardens for that lush, exotic look
  • Naturalistic landscapes that mimic wild hammock environments

Growing Your Own Hammock Viper’s-Tail

The good news? This native beauty is refreshingly low-maintenance once established. Here’s what you need to know:

Climate Requirements: Hammock viper’s-tail is suited for USDA hardiness zones 10-11, making it perfect for South Florida and the Caribbean but too tender for most other areas.

Light and Location: Plant it in full sun to partial shade. It’s quite forgiving and will adapt to various light conditions, though more sun typically means more flowers.

Soil Preferences: Well-draining soil is key, but this adaptable native isn’t particularly fussy about soil type. It can handle both sandy coastal soils and richer garden beds.

Water Needs: Once established, hammock viper’s-tail is quite drought tolerant – a trait that makes it perfect for low-water gardens. During establishment, provide regular water, then back off as the plant matures.

Planting and Care Tips

Getting started with hammock viper’s-tail is straightforward:

  • Plant in spring or fall when temperatures are moderate
  • Space plants appropriately, considering their potential 13-16 foot mature size
  • Provide support like a trellis or fence if you want to encourage climbing behavior
  • Water regularly during the first growing season to help establish strong roots
  • Minimal pruning is needed – just remove any dead or damaged growth
  • Fertilizer isn’t necessary for this hardy native, but a light application of compost can be beneficial

A Few Things to Keep in Mind

While hammock viper’s-tail is generally well-behaved, its vigorous growth means you’ll want to give it adequate space or be prepared to manage its spread. The plant can function as both a shrub and a climbing vine, depending on what support is available.

Since this is a tropical native, it’s not suitable for cooler climates. Gardeners in zones 9 and below will need to look for cold-hardy alternatives.

The Bottom Line

Hammock viper’s-tail offers the perfect combination of native authenticity, wildlife value, and garden appeal. If you’re gardening in South Florida or the Caribbean, this golden-flowered beauty deserves a spot in your landscape. It’s a plant that gives back to the environment while adding year-round interest to your garden – and really, what more could you ask for?

Whether you’re creating a dedicated native plant garden or just looking to add some pollinator-friendly plants to your existing landscape, hammock viper’s-tail is a choice you can feel good about. Your local butterflies will thank you, and you’ll enjoy the cheerful yellow blooms for years to come.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Atlantic and Gulf Coastal Plain

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Caribbean

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Hammock Viper’s-tail

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Gentianales

Family

Apocynaceae Juss. - Dogbane family

Genus

Pentalinon Voigt - pentalinon

Species

Pentalinon luteum (L.) B.F. Hansen & Wunderlin - hammock viper's-tail

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA