North America Native Plant

Florida Keys Blackbead

Botanical name: Pithecellobium keyense

USDA symbol: PIKE

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Synonyms: Pithecellobium guadalupense (Pers.) Chapm. (PIGU2)   

Florida Keys Blackbead: A Hidden Gem for South Florida Native Gardens If you’re looking to add authentic Florida character to your landscape, meet the Florida Keys blackbead (Pithecellobium keyense) – a charming native shrub that’s as tough as it is beautiful. This delightful plant brings both ecological value and ornamental ...

Florida Keys Blackbead: A Hidden Gem for South Florida Native Gardens

If you’re looking to add authentic Florida character to your landscape, meet the Florida Keys blackbead (Pithecellobium keyense) – a charming native shrub that’s as tough as it is beautiful. This delightful plant brings both ecological value and ornamental appeal to gardens lucky enough to be in the right climate zone.

What Makes Florida Keys Blackbead Special?

The Florida Keys blackbead is a true Florida native, found naturally only in South Florida and the Keys. This perennial shrub typically grows as a multi-stemmed woody plant, usually staying under 13-16 feet tall, making it perfect for residential landscapes. You might also see it listed under its synonym, Pithecellobium guadalupense.

Where Does It Grow?

This special shrub is endemic to Florida, with its natural range limited to the southernmost parts of the state, including the Florida Keys and extreme southern mainland areas. It’s truly a plant that represents the unique character of South Florida’s native ecosystems.

Why Plant Florida Keys Blackbead?

There are several compelling reasons to consider this native beauty for your landscape:

  • Authentic Florida character: You’ll be growing a plant that’s genuinely from your region
  • Wildlife magnet: The fragrant white to yellowish flower clusters attract bees, butterflies, and other beneficial pollinators
  • Low maintenance: Once established, it’s remarkably drought tolerant and requires minimal care
  • Coastal tough: Its natural salt tolerance makes it perfect for seaside gardens
  • Year-round interest: Attractive compound leaves and interesting seed pods provide multi-season appeal

Perfect Garden Settings

Florida Keys blackbead shines in several garden styles:

  • Native plant gardens where authenticity matters
  • Coastal landscapes that need salt-tolerant plants
  • Wildlife and pollinator gardens
  • Xeriscapes and drought-tolerant plantings
  • Naturalistic landscapes that mimic Florida’s wild spaces

Growing Conditions and Care

The good news is that Florida Keys blackbead is relatively easy to grow if you’re in the right location:

Climate Requirements: This plant is only hardy in USDA zones 10-11, which limits it to South Florida. If you’re outside this range, this beauty isn’t for you – but don’t worry, there are other wonderful native options for your area!

Light and Soil: Plant in full sun to partial shade in well-draining soil. Like many Florida natives, it doesn’t appreciate soggy conditions but adapts to various soil types once drainage is good.

Watering: Water regularly during establishment, then step back and let nature take over. This drought-tolerant shrub actually prefers to dry out between waterings once mature.

Maintenance: One of the best things about this plant is how little fuss it requires. Minimal pruning is needed, and it has a naturally attractive growth habit.

Planting and Establishment Tips

  • Plant during Florida’s cooler months (fall through early spring) for best establishment
  • Ensure good drainage – this is crucial for success
  • Water consistently for the first growing season, then reduce frequency
  • Mulch around the base to retain moisture and suppress weeds during establishment
  • Be patient – growth rate is slow to moderate, but the wait is worth it

The Bottom Line

Florida Keys blackbead is a fantastic choice for South Florida gardeners who want to embrace their region’s natural heritage while creating beautiful, low-maintenance landscapes. Its combination of ecological value, aesthetic appeal, and tough-as-nails nature makes it a winner for native plant enthusiasts.

Just remember – this is strictly a South Florida plant (zones 10-11 only). If you’re gardening elsewhere, celebrate the native plants that belong in your region instead. Every area has its own botanical treasures waiting to be discovered!

Florida Keys Blackbead

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Pithecellobium Mart. - blackbead

Species

Pithecellobium keyense Britton ex Britton & Rose - Florida Keys blackbead

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