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Chaste Tree

Vitex agnus-castus

Chaste tree
Trees

A small deciduous tree from the Mediterranean with aromatic, hand-shaped leaves and spikes of lavender-blue flowers in early summer. It handles Phoenix heat well and gives a soft, garden feel in summer, then drops its leaves for winter.

Small
Full sunpreferred
Deciduous
Ask a designer about it
Mature size15–20′ tall and as wide; can reach 25′
Growth rateModerate
Water useModerate in summer; little in winter
SunFull sun to partial sun
BloomLavender-blue spikes, late May–June, with some repeat bloom
Cold hardinessVery cold hardy; no concern in Phoenix
FoliageDeciduous; aromatic, dull green, hand-shaped leaves
SeedsSmall brown capsules that hang on through winter

Living with it in the Phoenix Valley

Watering

Follow the tree schedule in our Landscape Care guide while it establishes. Water deeply through the warm season and very little in winter. More water means faster growth but fewer flowers, so don’t overdo it.

Pruning

Prune while dormant, December to early March. It can be trained as a small multi-trunk tree with a raised canopy, or cut back harder to keep it shrub-sized.

Pests

Aphids, scale and whiteflies can appear; most outbreaks are minor.

How our designers use it

Early summer flowers

It blooms as many trees finish, adding cool color to a patio or entry at the start of the hot season.

Small multi-trunk accent

Trained to a few trunks, it makes a graceful focal point in a courtyard or garden bed.

Lush, seasonal gardens

Our designers use it in oasis and Mediterranean-style plantings where a bare winter look is acceptable.

Good to know

Around the pool

Leaves drop in fall, and spent flowers and seed capsules fall over a long season. The seeds can be slippery on hard surfaces, so keep it back from the water and decking.

Seedlings

Seeds sprout readily in irrigated beds. Pull volunteers while small.

Pairs well with

Similar trees

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Picturing one in your yard?

Our designers can show you where it will thrive, what to plant beneath it and how it fits the rest of your landscape.

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