Helichrysum, Silver Spike
Helichrysum thianschanicum 'Icicle'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Helichrysum (hel-ih-KRY-sum) (Info)
Species: thianschanicum (thee-an-SHAN-ee-kum) (Info)
Cultivar: Icicle

Category:

Annuals

Perennials

Height:

6-12 in. (15-30 cm)

Spacing:

18-24 in. (45-60 cm)

Hardiness:

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)

Not Applicable

Sun Exposure:

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Cream/Tan

Inconspicuous/none

Bloom Time:

N/A

Foliage:

Grown for foliage

Silver/Gray

Other details:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Unknown - Tell us

Propagation Methods:

From herbaceous stem cuttings

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Regional

This plant has been said to grow in the following regions:

Fairfield, California

North Fork, California

Loxahatchee, Florida

New Albany, Indiana

Barbourville, Kentucky

Bellevue, Michigan

Madison, Mississippi

Metuchen, New Jersey

Las Cruces, New Mexico

Syracuse, New York

Kure Beach, North Carolina

East Liverpool, Ohio

Murfreesboro, Tennessee

Mc Kinney, Texas

Olympia, Washington

show all

Gardeners' Notes:

4
positives
1
neutral
0
negatives
RatingContent
Neutral

On Aug 17, 2014, coriaceous from ROSLINDALE, MA wrote:

This is a silver-leafed plant from northern China. It is highly xeric, and some sources say it's hardy to Z5a, at least where winters are dry. It is somewhat tolerant of the winter moisture of eastern North America.

I'm not clear whether "Icicle" is a cultivar name or a trade name for the species.

Positive

On May 19, 2013, Doublekranch from Fairmount, NY wrote:

I live in Zone 5 and have had success overwintering this plant in our cold frame. It must go in dry and stay that way until after the last hard freeze.

Positive

On Jul 22, 2010, suewylan from North Fork, CA (Zone 7b) wrote:

This is a loooooong bloomer! It's been blooming from May to July and only now, middle of July, are the flowers going to seed. It's lovely as an edging along my patio steps and also seeded itself into my herb basket. In another location, I have it as a single accent plant.

On the tag it said the flowers were nondescript, but I have use them in flower arrangements every summer. They last as dry flowers for quite awhile.

Positive

On Apr 16, 2006, shustwit from McKinney, TX wrote:

Mine is growing well in two beds (south and west) in Northern Texas. The one in the south bed of my house is almost 2' tall.

Positive

On Jan 27, 2003, Terry from Murfreesboro, TN (Zone 7a) wrote:

An interesting foliage plant; its naturally spikey habit is a little difficult to work into planting schemes, but the texture it adds is worth the extra effort.

Fairly easy to root from tip cuttings.