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Semmes Cold Hardy Red Bottlebrush - Callistemon - 3 Gallon Pot
Get all the details below on Woodlander's Hardy, the most cold hardy bottlebrush on earth! Rest assured, when you buy plants from Wilson Bros Gardens, we ship high-quality nursery and garden center grade specimens that are ready to plant and thrive for years to come in your landscape!

Semmes Cold Hardy Red Bottlebrush - Callistemon - 3 Gallon Pot

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SIZE: 3 GALLON POT


Semmes Cold Hardy Bottlebrush 
Callistemon  'Semmes Hardy'

USDA Plant Hardiness Zones: 7a-10b  Find Your Zone

Note:  For our customers who live and garden north of USDA Plant Hardiness Zone 7a, where this Bottlebrush is not winter hardy, you'll be happy to know it can be grown in containers that can be brought indoors during winter and placed back outside when temperatures warm up in spring. 

For those of you in USDA Zones 7a or 7b we advise providing young plants with a little extra protection during the first winter or two if and when the temperature drops below 20 degrees. Add mulch around the base or cover the entire plant with a tarp or blanket for insulation. Planting close to the home on the east or south side will offer some protection from winters cold northern winds. 



Special Attributes

Until the release of Semmes Hardy, other bottlebrush varieties were cold hardy only in zones 9 and 10 of southern Florida and Texas. But this red flowered bottlebrush survived -9 degrees F in North Carolina and ever since has been proclaimed as the most cold hardy bottlebrush on earth (USDA Zone 7a). The older the plant gets the more cold hardy it becomes. 

The arching branches of Semmes Hardy form a mounding and spreading shrub to about 4' tall and wide. Left to grow naturally, the shrub may reach 6 to 8 feet wide. Red, fuzzy, bottlebrush-like flowers with a distinct pinkish tint appear in late spring and then sporadically through the rest of the warm season on established plants. The long narrow leaves emerge a beautiful coppery color before maturing to dark blue-green and have have a fresh, lemony scent when bruised.




Landscape & Garden Uses

Growing 4 to 5 feet tall and 5-8 feet wide, Semmes Hardy Bottlebrush has multiple uses in the landscape. When grown as a shrub they are useful as single specimens, in groupings or as formal or informal hedges.  Excellent spilling out from behind other shorter plants. A great addition to tropical and butterfly gardens or Xeriscape (low water needs) gardens. In the warmer USDA Hardiness Zones 8b-10b Semmes Hardy Bottlebrush is excellent for use in containers that can be left outside during winter.. 

Spacing:  3-4' for solid hedges;  9'+ for space between plants




Cultural Preferences

Semmes Hardy Bottlebrush is exceptionally easy to grow in most any well-drained soil. It prefers full sun but will tolerate some shade. Plants will require water when establishing themselves, however are very drought tolerant when established. Bottlebrush have very few if any insect or disease problems, and deer won't touch them. Tolerates lots of heat and salt air. Established plants may be hard pruned after flowering to tidy the plant and encourage a denser habit.




Helpful Articles

Click on the link below to find helpful advice from our experts on how to plant, fertilize, prune and water Callistemon Bottle Brush shrubs.





Plant Details

USDA Plant Hardiness Zones: 7a-10b  Find Your Zone
Plant Type:  Evergreen Flowering Shrub 
Height at Maturity:  4-5'
Width at Maturity:  4-5'
Spacing:  3-4' for solid hedges; 6'+ for space between plants
Growth Habit / Form:  Broad, Bushy, Upright, Arching
Growth Rate:  Moderate, Fast
Flower Color:  Bright Red
Flower Size:  3-4" in length
Flowering Period:  Spring, Summer
Flower Type:  Cylindrical, Bottlebrush-like
Fragrant Flowers:  No
Foliage Color:  Medium to Dark Blue-Green
Fragrant Foliage:  No
Berries:  No
Berry Color:  NA
Sun Needs:  Full to Mostly Sun, Some Shade is tolerated
Water Needs:  Average
Soil Type:  Clay (Amended), Loam, Sandy, Silty
Soil Moisture / Drainage:  Well Drained Moist 
Soil pH:  6.0 - 8.0 (Acid to Slightly Alkaline)
Maintenance / Care:  Average to Low
Attracts:  Visual Attention, Butterflies, Birds
Resistances:  Deer, Disease, Drought, Dry Soil, Heat, Insect



Plant Long & Prosper!

Questions?  Contact Us 


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