Shrubs

Vitex agnus-castus 'SMVACBD'

Blue Diddley® chaste tree

Blue Diddley® chaste tree. Photo courtesy of Proven Winners.

Lavender-blue summer flower spikes rise above a compact, rounded shrub. Smaller than a typical chaste tree, it fits sunny perennial gardens and mixed borders. In colder areas the stems may die back, with fresh growth returning slowly in spring before summer flowering.

At a glance

Sun: Full sun
Mature size: 3–6 ft. tall × 3–6 ft. wide
Water: Moderate
Hardiness: USDA zones 5–9
Bloom: Lavender-blue; summer

Sizes & prices

#2Call for price

Catalog updated September 8, 2026. This is not a live stock count; please call to confirm availability and price.

Ask about this plant

Select a section to expand.

Resistance & tolerances

Deer: Resistant; not browse-proof.
Drought: Tolerant once established.
Heat: Heat tolerant.

Resistance is not a guarantee; deer and rabbits may browse any plant.

Seasonal interest

Foliage: Deciduous.

Growing & care

Pruning: Trim in spring; wait for slow-emerging growth before deciding which stems are dead.
Flowering wood: New growth.
Winter habit: Can die to the ground in zones 5–6 and regrow as a perennial.

Sources & photo credits

Proven Winners

Photo: Photo courtesy of Proven Winners · Authorized nursery promotional use

Reviewed September 21, 2026. Growing conditions vary by location.