North America Native Plant

Moonvine

Botanical name: Ipomoea calantha

USDA symbol: IPCA4

Life cycle: perennial

Habit: vine

Native status: Native to Puerto Rico  

Moonvine: A Mysterious Puerto Rican Native Worth Discovering Meet the moonvine (Ipomoea calantha), a fascinating native plant that calls Puerto Rico home. If you’re looking to add something truly unique to your garden and you happen to live in or visit Puerto Rico, this lesser-known member of the morning glory ...

Moonvine: A Mysterious Puerto Rican Native Worth Discovering

Meet the moonvine (Ipomoea calantha), a fascinating native plant that calls Puerto Rico home. If you’re looking to add something truly unique to your garden and you happen to live in or visit Puerto Rico, this lesser-known member of the morning glory family might just capture your imagination—though finding it might be quite the adventure!

What Makes Moonvine Special?

Moonvine is a perennial forb herb, which simply means it’s a non-woody plant that comes back year after year. Unlike its woody cousins, this plant stays relatively soft and herbaceous, with its growing points tucked safely at or below ground level to survive through seasons.

As part of the diverse Ipomoea family (you might know some relatives like sweet potato vines or morning glories), moonvine carries the classic charm of this beloved plant group, though it maintains its own distinct Puerto Rican personality.

Where You’ll Find This Native Gem

Moonvine is exclusively native to Puerto Rico, making it a true island endemic. This means if you’re gardening anywhere else in the world, you won’t be able to find this particular species growing naturally in your local ecosystem.

Should You Grow Moonvine in Your Garden?

Here’s where things get a bit tricky—and honestly, pretty exciting for plant enthusiasts! Moonvine appears to be quite rare in cultivation, with limited information available about its growing requirements, appearance, and availability. This presents both an opportunity and a responsibility.

The Good News

  • It’s a true Puerto Rican native, so it belongs in local ecosystems
  • As a perennial, it should return year after year once established
  • It’s not listed as invasive, so it won’t cause ecological harm
  • You’d be growing something genuinely rare and special

The Challenges

  • Extremely limited availability in nurseries
  • Little documented information about care requirements
  • Potentially rare in the wild, requiring responsible sourcing
  • May require specialized growing knowledge

Growing Moonvine: What We Know

Unfortunately, specific growing instructions for moonvine are scarce. However, if you’re determined to grow this unique native, here’s what plant enthusiasts should consider:

Start with responsible sourcing: If you can locate seeds or plants, ensure they come from reputable sources that don’t harvest from wild populations. This is crucial for protecting potentially rare native species.

Think like its relatives: While we can’t guarantee success, other Ipomoea species generally prefer well-draining soil and plenty of sunlight. Puerto Rico’s tropical climate suggests moonvine likely enjoys warm, humid conditions.

Be prepared to experiment: Growing a rare native often means becoming a bit of a plant detective, observing what works and what doesn’t in your specific garden conditions.

The Bottom Line for Gardeners

Moonvine represents one of those intriguing gardening challenges that appeals to native plant enthusiasts and collectors. If you’re in Puerto Rico and passionate about preserving local flora, this could be an incredibly rewarding project—just approach it with patience and respect for its potential rarity.

For gardeners outside Puerto Rico, consider exploring native Ipomoea species in your own region instead. Every area has its own unique morning glory relatives that can provide similar beauty while supporting local ecosystems.

Whether you’re lucky enough to encounter moonvine in Puerto Rico’s wild spaces or brave enough to attempt cultivation, this mysterious native reminds us that there’s always more to discover in the plant world. Sometimes the most rewarding garden adventures involve the species that don’t come with detailed care instructions!

Moonvine

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

Solanales

Family

Convolvulaceae Juss. - Morning-glory family

Genus

Ipomoea L. - morning-glory

Species

Ipomoea calantha Griseb. - moonvine

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