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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)
Sun Exposure: Full Sun
Bloom Color: Red
Bloom Time: Mid Spring Late Spring/Early Summer Mid Summer
Foliage: Evergreen Aromatic
Other details: Average Water Needs; Water regularly; do not overwater This plant is attractive to bees, butterflies and/or birds Flowers are fragrant
Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral)
Patent Information: Non-patented
Propagation Methods: From semi-hardwood cuttings
Seed Collecting: Bag seedheads to capture ripening seed Collect seedhead/pod when flowers fade; allow to dry Properly cleaned, seed can be successfully stored
On Mar 2, 2012, cinemike from CREZIERES France (Zone 8a) wrote:
This very attractive shrub is surprisingly hardy.
It (with some damage) survived the winter of 2010/11 in Belfast Northern Ireland which was the coldest on record with temperatures plummeting to -16 C and staying firmly below zero for about two weeks. Tolerates poor (acid) soil as well.
On Oct 30, 2009, donnacreation from Sumter, SC (Zone 8a) wrote:
Fully cold hardy in central SC, but hard to find at local nurseries. Often bottlebrush around here is only cold hardy to 9a, although purportedly otherwise. Buyer beware!
Update April, 2011
I lost 4 bottlebrushes to ground voles winter 2011. I'm no longer certain that my cold hardy BB was callistemon citrinus. It was sold w/o tag ID and info. When I moved down here 5 years ago, I bought several BB's that died on me the first winter. They came back from the roots, which was disappointing - I wanted a BB tree, not a struggling, perennial shrub. I just bought 2 more c citrinus trees because I can't find anything else. They were Monrovia plants - beautiful and overpriced. I'm tempted to return them for a garden center credit. If they die back to ground this winter, I will provide another update. There's a lot of confusion out there concerning the cold hardiness of callistemons. I'm very hopeful that DG plantfile info is correct, and my trees remain trees.
On Oct 26, 2006, dstrick7 from Winterville, GA wrote:
I have one (maybe 2...one never was labeled) of these - nice shrub!...especially since we can't seem to grow azaleas with any success (though I'm told some of the evergreen varieties are heat-tolerant).
On Sep 2, 2001, eltel from Macclesfield, CHESHIRE (Zone 8a) wrote:
Native to Australia and New Zealand, there are about 25 species of Callistemon, which are closely related to the Melaleucas from the same part of the world. The young shoots of C. citrinus are pink or red and silky. The flower spike (the so-called bottle brush) is like a giant pipe cleaner and bright crimson.
Listed as Zone 9, C. citrinus (aka "Crimson Bottlebrush") will tolerate short periods of down to –10°C. C. sieberi is the hardiest of all the species; having been recorded as surviving occasional lows of –17° C.
On Aug 31, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:
Raising from seed will yield variable results; some will be scented, others will not.
The foliage smells lemony when crushed or bruised. Bright red flowers are very attractive to hummingbirds and butterflies.
This plant has been said to grow in the following regions:
ÃŽle De Sein, Mobile, Alabama Vincent, Alabama Queen Creek, Arizona Chowchilla, California Fallbrook, California Long Beach, California Manteca, California Mission Viejo, California North Auburn, California Redondo Beach, California Sacramento, California San Jose, California San Leandro, California Cleveland, Florida Deltona, Florida Homosassa, Florida Keystone Heights, Florida Madeira Beach, Florida Oldsmar, Florida Pensacola, Florida Ruskin, Florida South Venice, Florida Umatilla, Florida Yulee, Florida Hazlehurst, Georgia Winterville, Georgia Lake Charles, Louisiana Pahrump, Nevada Dallas, Oregon Caguas, Puerto Rico Bluffton, South Carolina Conway, South Carolina Lexington, South Carolina (2 reports) Parris Island, South Carolina Saint Helena Island, South Carolina Murfreesboro, Tennessee Austin, Texas Belton, Texas Brownsville, Texas Horizon City, Texas Houston, Texas (2 reports) Liberty Hill, Texas Round Rock, Texas Santa Fe, Texas Spring, Texas Timpson, Texas White Center, Washington