North America Non-native Plant

Monkey’s-comb

Botanical name: Pithecoctenium crucigerum

USDA symbol: PICR3

Life cycle: perennial

Habit: vine

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Monkey’s-Comb: A Tropical Climbing Vine for Warm Gardens If you’re looking to add some tropical flair to your warm-climate garden, you might have stumbled across monkey’s-comb (Pithecoctenium crucigerum). This vigorous climbing vine brings a splash of color with its eye-catching tubular flowers, but there are some important things to know ...

Monkey’s-Comb: A Tropical Climbing Vine for Warm Gardens

If you’re looking to add some tropical flair to your warm-climate garden, you might have stumbled across monkey’s-comb (Pithecoctenium crucigerum). This vigorous climbing vine brings a splash of color with its eye-catching tubular flowers, but there are some important things to know before you decide whether it’s right for your landscape.

What is Monkey’s-Comb?

Monkey’s-comb is a perennial climbing vine that knows how to make a statement. As a twining plant with relatively long stems that can become woody over time, it’s built for climbing and will happily scramble up any support you give it. The plant gets its quirky common name from its distinctive flowers, which cluster together in a way that might remind you of a decorative comb.

Where Does It Come From?

Here’s where things get interesting: while monkey’s-comb has made itself at home in Florida, it’s actually not a native plant. Originally from Central and South America, particularly regions of Brazil and Argentina, this vine is what botanists call a non-native species. It has been introduced to the United States and now reproduces on its own in the wild, persisting without human help in Florida.

The Eye-Catching Appeal

What draws gardeners to monkey’s-comb? It’s all about those flowers! The plant produces clusters of tubular, trumpet-shaped blooms that range from orange to red in color. These showy flowers appear throughout the growing season and create quite a spectacle when the vine is in full bloom. The climbing habit also makes it perfect for covering unsightly fences or creating living screens.

Garden Role and Design Uses

Monkey’s-comb works best as a climbing element in your garden design. Here are some ways you might use it:

  • Covering pergolas, arbors, or trellises
  • Screening unsightly areas or creating privacy
  • Adding vertical interest to bland walls or fences
  • Creating a tropical backdrop in themed garden areas

This vine is best suited for tropical and subtropical gardens, though gardeners in cooler climates sometimes grow it in conservatories or as an annual.

Growing Conditions and Care

If you’re considering monkey’s-comb, you’ll need the right conditions:

  • Climate: Hardy in USDA zones 9-11, as it’s quite frost-tender
  • Light: Prefers partial to full sun for best flowering
  • Soil: Well-draining soil is essential
  • Water: Regular moisture during the growing season, but avoid waterlogged conditions
  • Support: Requires a sturdy structure to climb on

Planting and Care Tips

Success with monkey’s-comb comes down to a few key practices:

  • Plant in spring after the last frost date
  • Provide a strong trellis, fence, or other climbing support from the start
  • Water regularly during active growth periods
  • In zones 8 and below, protect from frost or grow in containers that can be moved indoors
  • Prune as needed to control growth and maintain shape

Wildlife and Pollinator Benefits

The tubular flowers of monkey’s-comb are particularly attractive to hummingbirds and other long-tongued pollinators. This can add another layer of interest to your garden as you watch these visitors come and go throughout the blooming season.

Should You Plant It?

The decision to plant monkey’s-comb comes with some considerations. While it’s a beautiful and relatively easy-to-grow vine, it’s important to remember that it’s not native to the United States. If you’re passionate about supporting local ecosystems, you might want to consider native climbing alternatives that provide similar aesthetic appeal while better supporting local wildlife.

Some native alternatives to consider include trumpet vine (Campsis radicans) or coral honeysuckle (Lonicera sempervirens), both of which offer tubular flowers that attract hummingbirds and have the added benefit of being naturally adapted to North American conditions.

If you do choose to grow monkey’s-comb, be mindful of its potential to self-seed and monitor its spread in your garden. With proper care and consideration, it can be an attractive addition to the right tropical or subtropical landscape.

Monkey’s-comb

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

Scrophulariales

Family

Bignoniaceae Juss. - Trumpet-creeper family

Genus

Pithecoctenium Mart. ex Meisn. - monkey's-comb

Species

Pithecoctenium crucigerum (L.) A.H. Gentry - monkey's-comb

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