Blue Puffball™ Chaste Tree

Blue Diddley Chaste Tree

Small plant, big sky-blue magic perfectly sums up the charming Blue Diddley Chaste Tree (Vitex agnus-castus 'SMVACBD'). This dwarf shrub brings the same dreamy, true-blue flower spikes as full-size Vitex Trees, but in a compact 3 to 6-foot form that fits anywhere. As a fragrant, summer-long bloomer with aromatic green foliage, subtle silver sheen, and pollinator-ready blossoms, this hardy beauty brings nonstop color from the heat of June through crisp fall days. If you love scented plants, browse more fragrant bloomers to pair with them.

This improved dwarf Vitex stays tight and tidy while still pumping out those striking blue spires that sway in the breeze. The handsome, aromatic foliage emerges green with a hint of silver, giving the plant a soft, glowing look in spring. Once summer kicks in, the tall spikes bloom boldly until autumn. Depending on the climate, this selection behaves as a hardy perennial, a deciduous shrub, or a semi-to-fully evergreen shrub throughout USDA zones 5 to 9.

Root-hardy, fast-growing, and blooming on new wood, this Proven Winners gem keeps the color coming even after cold snaps. Chaste Trees remain one of the few winter-hardy plants offering genuine blue blooms, and this pint-sized powerhouse delivers all that charm without requiring big garden real estate.

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Key Features

• Fantastic dwarf Vitex with true-blue flowers
• Tall, deep-blue, fragrant flower spires
• Long-lasting summer to fall blooms
• Aromatic, handsome foliage with a subtle silver sheen
• Compact, easy-care form perfect for small spaces
• Pollinator magnet for bees, butterflies, and hummingbirds
• Great as a specimen, low hedge, container thriller, or screen
• Hardy, drought-tolerant, and root-hardy in cold climates

Landscaping Uses

It is hard to find a more beautiful plant with such outstanding qualities. Wonderful whether in bloom or not, Blue Diddley is great as a solo specimen or in mass drifts, and its care is a breeze in any quantity. This compact Chaste Tree fits effortlessly into cottage gardens, mixed shrub borders, butterfly gardens, and rock gardens while providing color and fragrance all summer and fall.

• Makes an eye-catching hedge along a driveway
• Perfect as a pretty living fence along a property line
• Stands out as a backdrop for garden beds and borders
• Provides fragrance and pollinator appeal in mixed shrub borders
• Excellent in Cottage gardens and Rock Gardens
• A must-have for the Butterfly Garden and a magnet for hummingbirds
• Outstanding thriller for large containers and balcony planters
• Great for screening patios, hot tubs, porches, and poolside areas

Care & Maintenance

Hardy throughout USDA planting zones 5 to 9, this plant behaves as a deciduous shrub or even a semi-evergreen depending on the climate. As a fast-growing, hardy shrub that blooms on new wood, it bounces back quickly even after winter dieback. Blue Diddley needs full sun, well-drained soil, and moderate moisture when young, then becomes drought-tolerant as it matures. For help understanding "well-drained," visit this guide on well-drained soil. Don’t forget to order your Nature Hills Root Booster for lifelong mycorrhizal support.

• Planting Time: Spring or fall planting is ideal
• Sun Requirements: Full sun with at least 6 hours of direct light
• Soil Requirements: Well-drained soil; moderate fertility preferred
• Moisture Needs: Moderate moisture; use the Finger Test to monitor; new plants need consistent moisture their first year
• Mulch: Apply a 3 to 4 inch deep layer of mulch to protect roots
• Fertilization: Light, balanced fertilizer or compost in spring
• Pruning: Blooms on new wood; prune in late winter or early spring; renewal prune older stems and allow vigorous new stems to replace them
• Special Perks: Drought-tolerant, disease-resistant, fast-growing, pollinator-friendly, and deer-resistant

Bring On The Blue Beauty

This gorgeous ball of blue flower spires offers incredible garden value in a pint-sized package. If you crave true-blue blooms from summer to fall but don’t have space for a full-sized Vitex Tree, Blue Diddley is your dream come true. Order now at Nature Hills Nursery and enjoy an easy-care shrub that draws butterflies, hummingbirds, and admiration all season long.

Frequently Asked Questions

Is Blue Diddley Chaste Tree fragrant?
Yes, the foliage and blooms are aromatic and highly attractive to pollinators.

Does Blue Diddley die back in winter?
In zones 5 and 6, it may die back to the ground, but it regrows quickly in spring and blooms on new wood.

How big does Blue Diddley Chaste Tree get?
This dwarf Vitex typically grows 3 to 6 feet tall and wide.

Will Blue Diddley grow in containers?
Yes, it makes an excellent large-container thriller for patios, porches, poolside, and balconies.

Does Blue Diddley attract pollinators?
Absolutely. Bees, butterflies, and hummingbirds flock to its long-lasting blue blooms.