North America Non-native Plant

Chastetree

Botanical name: Vitex

USDA symbol: VITEX

Life cycle: perennial

Habit: shrub

Native status: It's either native or not native in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ It's either native or not native in Pacific Basin excluding Hawaii âš˜ It's either native or not native in Puerto Rico âš˜ It's either native or not native in the U.S. Virgin Islands  

Chastetree: A Fragrant Addition to Your Garden (But Consider These Native Alternatives First) If you’re looking for a low-maintenance shrub that produces gorgeous, fragrant flower spikes and can handle tough growing conditions, you might have stumbled across the chastetree (Vitex). This Mediterranean beauty has made quite a name for itself ...

Chastetree: A Fragrant Addition to Your Garden (But Consider These Native Alternatives First)

If you’re looking for a low-maintenance shrub that produces gorgeous, fragrant flower spikes and can handle tough growing conditions, you might have stumbled across the chastetree (Vitex). This Mediterranean beauty has made quite a name for itself in American gardens, though it’s worth knowing a bit about its background before you plant.

What Exactly Is a Chastetree?

The chastetree, scientifically known as Vitex, is a perennial shrub that typically grows as a multi-stemmed woody plant. Most specimens stay under 13-16 feet tall, making them perfect for medium-sized garden spaces. Think of it as nature’s own purple fireworks display – during summer months, it sends up spectacular spikes of fragrant flowers that can be purple, blue, or sometimes white.

Where Does Chastetree Come From?

Here’s where things get interesting: chastetree isn’t actually native to the United States. It’s a non-native species that originally hails from the Mediterranean region, parts of Asia, and Africa. However, it has naturalized across many American states and now grows wild in Alabama, Arizona, Arkansas, California, Florida, Georgia, Hawaii, and many others – basically, it’s found its way into gardens from coast to coast.

The Good, The Bad, and The Fragrant

Let’s be honest about why gardeners love chastetree: it’s practically bulletproof once established. This shrub thrives in full sun and well-draining soil, and once its roots settle in, it can handle drought like a champ. The summer flower display is genuinely stunning, and bees and butterflies absolutely adore those nectar-rich blooms.

However, since it’s not native to our ecosystems, it doesn’t provide the same ecological benefits as indigenous plants. While it does attract pollinators, native alternatives might offer better support for local wildlife populations.

Growing Chastetree Successfully

If you decide to grow chastetree, here’s how to keep it happy:

  • Location: Choose a spot with full sun and good drainage
  • Planting: Spring is the best time to plant
  • Watering: Regular water the first year, then it’s quite drought tolerant
  • Pruning: Cut back in late winter or early spring to encourage fresh growth and flowers
  • Hardiness: Works well in USDA zones 6-9

Native Alternatives Worth Considering

Before you commit to chastetree, consider these native options that offer similar benefits while supporting local ecosystems:

  • American Beautyberry – Purple berries and pollinator-friendly flowers
  • Buttonbush – Unique spherical white flowers loved by butterflies
  • Spicebush – Early spring blooms and supports native caterpillars
  • Native azaleas – Spectacular spring displays in various colors

The Bottom Line

Chastetree can be a lovely addition to drought-tolerant gardens and Mediterranean-style landscapes. Its fragrant flowers and easy-care nature make it appealing to many gardeners. However, if you’re passionate about supporting native ecosystems and local wildlife, exploring indigenous alternatives might be the more environmentally conscious choice.

Whatever you decide, remember that the best garden is one that brings you joy while being mindful of the broader environmental picture. Sometimes that means choosing the exotic beauty, and sometimes it means discovering the hidden gems that have been growing in your region for thousands of years.

Chastetree

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

Lamiales

Family

Verbenaceae J. St.-Hil. - Verbena family

Genus

Vitex L. - chastetree

Species

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