Welcome to the world of the Chaste Tree (Vitex agnus-castus)! This unique plant, known for its pretty purple, lavender, or white flowers, has been grown for centuries.
Native to the Mediterranean and parts of Asia, the chaste tree can reach heights of 10-20 feet and is admired for its beauty, fast growth, and low-maintenance care. It blooms from late spring to early fall and is often used as an ornamental shrub in gardens.
Not only is it pretty, but it’s also believed to have medicinal uses, particularly for women’s health. Chaste trees are easy to grow from seeds or cuttings and thrive in warm, sunny spots with well-draining soil. Whether you’re planting one for its flowers or its health benefits, this plant is a fantastic addition to any garden.
Popular Chaste Tree Varieties
- Vitex agnus-castus (Common Chaste Tree)
- Vitex trifolia (Three-Leaf Chaste Tree)
- Vitex negundo (Five-Leaf Chaste Tree)

Care
- Water: Chaste trees prefer moderate to no watering. Let the soil dry out between watering sessions to avoid soggy roots, or just let the rain do the job.
- Light: These trees love full sun and need at least 6-8 hours of sunlight daily. In hotter regions, a bit of shade during the peak afternoon heat can help the tree thrive.
- Soil: Chaste trees do well in well-drained soil. A sandy or loamy mix is perfect, and adding compost helps the soil retain the right balance of nutrients. Keep in mind, that mulching can keep the soil too soggy for chaste trees.
- Temperature and Humidity: Chaste trees thrive in warm climates, ideally between 59 and 100°F (15 to 38°C). They can handle cooler temps, but frost may damage the plant if left unprotected.
Planting & Growing
Chaste trees are easy to grow and can be started from seeds or cuttings.
- For cuttings, snip a 12- to 18-inch branch in early summer, remove the lower leaves, and place it in water. After a couple of months, roots will form, and you can plant it in a pot or the ground.
- If you prefer seeds, collect them from the fruits and plant them about 1/8 inch deep in well-draining soil. Seeds may need a winter chill to sprout, so planting in fall works best.
Whether from a seed or a cutting, pick a sunny spot for your tree, and you’ll see growth in no time!
Pruning
Pruning a chaste tree isn’t required, but it definitely helps! By trimming, you can shape the tree, keep it looking neat, and even encourage more flowers to bloom. Cutting off damaged or dead branches also keeps the tree healthy. The best time to prune is in late winter, just before the new growth starts.
If you’re cutting a branch, aim to trim it above a bud or where it meets another branch. This gives the tree time to grow back stronger and fuller in the spring. Want to learn more? Check out our full guide on pruning chaste trees!
Common Pests
Chaste trees are generally pest-resistant but could sometimes attract aphids, spider mites, and whiteflies. Regularly check the leaves and deal with pests if you notice them.
Frequently Asked Questions
What is the lifespan of a chaste tree?
Chaste trees grow quickly and bloom on new growth every year, making them reliable bloomers. However, they have a shorter lifespan, usually living around 15 to 20 years.
What is the best fertilizer for chaste trees?
A balanced fertilizer with a bit more phosphorus works best for chaste trees. You can also use compost or organic materials like worm castings or manure to boost the soil.
Can you overwater a chaste tree?
Overwatering can harm a chaste tree by causing root rot, which makes it hard for the tree to take in nutrients. It’s best to let the soil dry out between waterings.
Does chaste tree repel mosquitoes?
The chaste tree’s fragrant leaves might help repel mosquitoes. This makes it a great plant for gardens where pests are a problem. There are sprays containing chaste tree that work really well against mosquitoes.