Helichrysum, Silver Spike 'Icicle'

Helichrysum thianschanicum

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




Foliage Color:


Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


6-12 in. (15-30 cm)


18-24 in. (45-60 cm)


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


Unknown - Tell us

Bloom Color:



Bloom Time:



Grown for foliage

Other details:

Unknown - Tell us

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


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:


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.


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.


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.


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.


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.