Callistemon · OmniGrow

Fact sheet

every fact quoted from its source

Typeshrub

“callistemons are ideal for both novice and experienced gardeners seeking a low-maintenance shrub” — How to Grow Callistemon: A Complete Guide for Gardeners - Bloomvara

Days to maturity3–4 years

“📅 Days to maturity: 2-3 years to mature flowering size” — How to Grow Bottlebrush (Callistemon) — LizPlants

Lightfull sun

“☀️ Sun: Full sun, minimum 6-8 hours daily” — How to Grow Bottlebrush (Callistemon) — LizPlants

WaterLow to moderate water needs once established

“💧 Water: Low to moderate water needs once established” — How to Grow Bottlebrush (Callistemon) — LizPlants

Hardiness zones8b-11, with some cold-hardy varieties tolerating zone 8a

Spacing60–180 in

Height60–72 in

“commonly grow 5 to 6 feet (2m) tall and 5 to 20 feet (1.5-6m) wide” — How to Grow Callistemon - Bottlebrush

Propagationseed, cuttings

Transplantspring or autumn

“Set container-grown Callistemon outdoors in spring or autumn” — How to Grow Callistemon - Bottlebrush

Ready whenregular deadheading can promote additional flowering and prolong the display

“Regular deadheading can promote additional flowering and prolong the display” — How to Grow Callistemon: A Complete Guide for Gardeners - Bloomvara

Pestspsyllids, mealybugs, scale insects, aphids, spider mites, thornbugs

“Common Pests … Psyllids (Callistemon psyllid)” — How to Grow Bottlebrush (Callistemon) — LizPlants

Diseasesleaf spots, wilting, fungal stem galls, witches’ broom

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