Vitex, Agnus Castus, Chaste Tree, Lilac Chastetree, Monk's Pepper 'Montrose Purple'

Vitexagnus-castus

Family
Lamiaceae (lay-mee-AY-see-ee)
Genus
Vitex (VY-teks)
Species
agnus-castus (AG-nus KAS-tus)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Grown for foliage
Deciduous
Shiny/Glossy
Height
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)
Spacing
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)
Hardiness
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Dark Blue
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Other Details
Category
Perennials
Shrubs
Trees
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
Flowers are fragrant
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
From semi-hardwood cuttings
From seed; direct sow outdoors in fall
From seed; direct sow after last frost
By simple layering
By stooling or mound layering
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Bessemer, Alabama

Piedmont, Alabama

Bigelow, Arkansas

Nicolaus, California

Vacaville, California

Littleton, Colorado

Milton, Florida

Pensacola, Florida

Tallahassee, Florida

Hammond, Louisiana

New Orleans, Louisiana

Sulphur, Louisiana

Pass Christian, Mississippi

Logandale, Nevada

Albuquerque, New Mexico

High Point, North Carolina

Winston Salem, North Carolina

Altus, Oklahoma

Columbia, South Carolina

Manning, South Carolina

Mount Pleasant, South Carolina

Memphis, Tennessee

Nashville, Tennessee

Beaumont, Texas

Dallas, Texas

Galveston, Texas

Houston, Texas(2 reports)

Jacksonville, Texas

Katy, Texas

Kendalia, Texas

Mabank, Texas

Magnolia, Texas

Nome, Texas

Port Arthur, Texas

Portland, Texas

San Antonio, Texas

Spring, Texas

Tyler, Texas

show all

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Gardener's Notes:

7
positives
1
neutral
0
negative
Sort By:
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C
ROSLINDALE, MA | April 2014 | positive

Valued for its lavender-violet flowers in late summer. There are white and pinkish forms, but I much prefer the violet cultivars like 'Le...Read More

L
Houston, TX (Zone 8a) | September 2012 | positive

I fell in love with this plant after seeing several of them in bloom at the local library's parking lot in Farmers Branch, TX

...Read More

B
High Point, NC | April 2011 | positive

Bought a small vitex from Chapel Hill. Over the summer it had some black spots on the leaves and I wasn't sure it would make it. The nu...Read More

G
New Orleans, LA | May 2010 | positive

These plants are just grand in New Orleans and Coastal Mississippi every spring from May on. plantanswers.com has the answer to pruning ...Read More

P
Houston, TX (Zone 9b) | May 2010 | neutral

Mine's not growing. I planted it in full sun, and well draining soil. I've started to water it more thinking it might get a flush of gr...Read More

B
Winston-Salem, NC (Zone 7b) | April 2010 | positive

This is such a great tree for the mid-south. I don't know why it's not planted more. It's hardy, tolerates Summer drought and never fails...Read More

2
Garden Grove, CA (Zone 9b) | July 2007 | positive

Saw this in local nursery, but with no plant tag. "What is it?" says I. "Snow Bush," he replied. Hah! After searching, found this lovely ...Read More

M
Tallahassee, FL (Zone 8b) | July 2006 | positive

I love these, since everyone has crape myrtles (and I dont' like the way you have to cut them back to stumps in the winter) I wanted some...Read More

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