Berkheya Species, Purple Berkheya, African Thistle 'Zulu Warrior'

Berkheyapurpurea

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Berkheya (berk-HE-yuh)
Species
purpurea (pur-PUR-ee-uh)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
Spacing
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
Hardiness
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
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
Lavender
Silver/Gray
Bloom Time
Mid Summer
Late Summer/Early Fall
Blooms repeatedly
Other Details
Category
Tropicals and Tender Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Bronze
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
From seed; direct sow after last frost
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

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

Lincoln, (258 reports)

Richmond, California

San Francisco, California

San Leandro, California

Wellesley Hills, Massachusetts

Noel, Missouri

Montclair, New Jersey

Saylorsburg, Pennsylvania

Seattle, Washington

Grafton, Wisconsin

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Gardener's Notes:

4
positives
1
neutral
0
negative
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D
| June 2016 | positive

It grows in Zone 5b/6a. Jelgava, Latvia, Europe. Stable. Stays evergreen.

E
Seattle, WA (Zone 8b) | January 2010 | positive

Attractive and reliably hardy perennial in Seattle in Zone 8b. Forms a prickly, woolly rosette of basal leaves, followed in mid-summer wi...Read More

S
(Zone 6a) | August 2009 | positive

Started from seed back in February/March of this year is strating to form a bloom now as of early August. Very interesting plant with lar...Read More

S
Louisville, KY (Zone 6b) | March 2009 | neutral

Many sources list this as Zone 6 hardy.

G
Saylorsburg, PA (Zone 6a) | December 2006 | positive

This is a unique plant which has done well in my garden, best in a very sunny location by the house. It overwintered well last year. It d...Read More

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