North America Native Plant

Frogwood

Botanical name: Guettarda krugii

USDA symbol: GUKR

Life cycle: perennial

Habit: shrub

Native status: Native to Puerto Rico  

Frogwood: A Charming Native Shrub for Tropical Gardens If you’re looking for a delightfully fragrant and low-maintenance addition to your tropical garden, let me introduce you to frogwood (Guettarda krugii). This charming native shrub might not have the most glamorous name, but don’t let that fool you – it’s a ...

Frogwood: A Charming Native Shrub for Tropical Gardens

If you’re looking for a delightfully fragrant and low-maintenance addition to your tropical garden, let me introduce you to frogwood (Guettarda krugii). This charming native shrub might not have the most glamorous name, but don’t let that fool you – it’s a real gem for gardeners in the right climate zones.

What is Frogwood?

Frogwood is a perennial shrub that’s perfectly sized for most home landscapes. As a multi-stemmed woody plant, it typically stays under 13-16 feet tall, making it an excellent choice for hedging, borders, or as a standalone specimen plant. Its compact, bushy growth habit means it won’t overwhelm smaller garden spaces.

Where Does Frogwood Come From?

This lovely shrub is native to Puerto Rico, where it has adapted beautifully to the island’s tropical climate and coastal conditions. In its natural habitat, frogwood thrives in the warm, humid environment that characterizes much of the Caribbean region.

Why You’ll Love Growing Frogwood

There are several compelling reasons to consider adding frogwood to your garden:

  • Fragrant flowers: The small white blooms aren’t just pretty – they’re wonderfully fragrant and will perfume your garden with their sweet scent
  • Attractive foliage: Glossy green leaves provide year-round visual interest
  • Pollinator magnet: Butterflies and other beneficial insects are drawn to the nectar-rich flowers
  • Low maintenance: Once established, this shrub is remarkably easy to care for
  • Salt tolerance: Perfect for coastal gardens where salt spray might damage other plants
  • Drought resistant: Can handle dry spells once its root system is established

Perfect Garden Settings for Frogwood

Frogwood is ideally suited for tropical and subtropical gardens, particularly those in coastal areas. It works beautifully in several landscape roles:

  • Hedge or border plantings
  • Coastal landscaping projects
  • Butterfly and pollinator gardens
  • Low-maintenance landscape designs
  • Native plant gardens (for Puerto Rico residents)

Growing Conditions and Care

The good news is that frogwood isn’t particularly fussy about its growing conditions. Here’s what this adaptable shrub prefers:

  • Light: Full sun to partial shade – it’s quite flexible
  • Soil: Well-draining soil is essential; it doesn’t like wet feet
  • Climate: USDA hardiness zones 10-11 (tropical and subtropical areas only)
  • Water: Regular watering during establishment, then drought tolerant
  • Maintenance: Occasional pruning to maintain shape and size

Planting and Care Tips

Getting your frogwood off to a good start is straightforward:

  • Plant in spring when temperatures are consistently warm
  • Choose a location with good drainage to prevent root rot
  • Water regularly for the first growing season to help establish the root system
  • Apply a balanced, slow-release fertilizer in spring
  • Prune lightly after flowering to maintain desired shape
  • Watch for any pest issues, though this species is generally quite resilient

Is Frogwood Right for Your Garden?

Frogwood is an excellent choice if you live in zones 10-11 and want a native or adapted plant that delivers fragrance, beauty, and wildlife value without demanding constant attention. However, gardeners in cooler climates will need to look for alternatives, as this tropical native simply won’t survive frost.

For those lucky enough to garden in suitable climates, frogwood offers the perfect combination of ornamental appeal and ecological benefits. Its fragrant flowers will delight your senses while providing valuable nectar for local pollinators – making it a win-win addition to any tropical landscape.

Frogwood

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Guettarda L. - guettarda

Species

Guettarda krugii Urb. - frogwood

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