Photo of Callistemon sieberi flower by Cistus Nursery

Photo by Cistus Nursery

Used with permission, all rights reserved

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Callistemon sieberi

Also Known As

  • Alpine Bottlebrush
  • Bottlebrush
  • River Bottlebrush

Plant type

shrub

size

  • H: 4'-15'
  • W: 3'-7'

planting zones

  • 7b-11

More Options

Callistemon sieberi plant details

Callistemon sieberi is a broadleaf evergreen shrub with green foliage. In spring chartreuse, red and yellow flowers emerge followed by brown fruit. Attracts bees and hummingbirds making it an excellent addition to pollinator gardens. Grows well with sun - mostly shade and even moisture - low water. Drought tolerant once established. Prefers to be dry in summer, dry when dormant. Adapts to various soil conditions. Does well in clay and well-drained soil.

CHARACTERISTICS OF Callistemon sieberi

Plant type: shrub
Plant family: myrtaceae
Foliage: evergreen green
Mature size: 3 FT - 7 FT - wide, 4 FT - 15 FT - tall
Flowers: chartreuse, red and yellow blooms in spring
Uses: container plant, mass-planting, winter interest

GROWING CONDITIONS for Callistemon sieberi

USDA Zones: 7b - 11
Sun exposure: sun - mostly shade
Watering frequency: even moisture - low
Resistant to: deer
Soil needs: clay and well-drained

Nursery contributed plant descriptions

Yet another very hardy bottlebrush, this from southeastern Australia, found growing along creek beds and tolerant of both wet and dry conditions. This fountain-like shrub with fine-textured, narrow leaves can be pruned to maintain a dense structure or allowed to grow to its expected height of 6 ft or so. This form has tight chartreuse, 'bottlebrush" flowers in spring, often repeated in summer. Best in sun to dappled shade. Frost hardy to upper USDA zone 7.
C. sieberi is a compact shrub to about 3' and occurs naturally at high elevations in Australia. The leaves are needle-like and the flowers are like creamy to pale yellow bottlebrushes. This is a frost-resistant species and tolerates snow! Plant in a protected, sunny, well-drained location. Prune after flowering.
Evergreen foliage and deep red bottle brush flowers are two important characteristics. Drought tolerance is the number one. Tough and easy.

By: Specialty Ornamentals

A cold hardy Aussie with 3" creamy-yellow bottlebrush flowers in early summer. This evergreen has a twisting picturesque habit that just gets better with age. Sun and drought tolerant and abhorred by deer. Occasional rebloom in fall. Lots of sun, good drainage.
Yellow flowers. Deer proof.

Gardening facts about Callistemon sieberi plant

How to Grow Callistemon sieberi

  • Sun Exposure

    • sun - mostly shade
  • Water Needs

    • even moisture - drought tolerant
  • Water Needs

    • dry when dormant
  • Water Needs

    • dry in summer
  • Soil Needs

    • clay
    • adaptable
    • well-drained

Features

  • Foliage Color

    • green
  • Flower Color

    • red
    • yellow
    • chartreuse
  • Wildlife

    • bees
    • hummingbirds
    • deer resistant
  • Fruit

    • brown
  • Flower Season

    • spring
  • Foliage Season

    • evergreen
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