Densely branched shrubs, sometimes with arching shoots; small tree forms also occur.
Foliage
Narrow, firm, often aromatic leaves. Leaf shape and new-growth colour vary by species.
Family
Myrtle family (Myrtaceae)
Origin
Australia; various species and garden cultivars.
Height
Varies from compact container shrub to small tree according to species and cultivar.
Bloom
Brush-like spikes with long stamens, often red; flowering time depends on species and cultivation.
Toxicity
Ornamental plant, not intended as food. Do not eat plant material.
Care calendar
Flowering / flower development
Jan·
Feb·
Mar·
Apr·
May●Indicative season
Jun●Indicative season
Jul●Indicative season
Aug●Indicative season
Sep·
Oct·
Nov·
Dec·
Possible flowering phase depending on species and culture
Guidance for Germany and Central Europe. Position, weather, species and cultivar shift these windows; indoor and container plants also depend on their winter conditions.
Your seasonal care plan
Overwinter brightly
Keep the root ball moderately moist.
Inspect shoots
Check for scale and dead tips.
Check roots
Repot if needed before strong growth.
Acclimatise to sun
Increase light gradually after winter.
Support growth
Check moisture and feeding needs.
Enjoy flowers
Avoid open flowers when spraying.
Maintain shape
Trim sparingly after flowering.
Care for containers
Check root-ball moisture in hot weather.
Prepare for autumn
Match feeding to slowing growth.
Plan frost protection
Consider species and local minimum temperatures.
Move under cover
Bring vulnerable containers in promptly.
Water sparingly
Avoid persistent waterlogging in winter.
Highlighted months are guidance, not fixed dates. Observe the plant, root ball and weather; water, feed and repot according to actual need.
Seasonal care intensity
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seasonal guidance for Germany. Needs depend on location, weather and species. Check moisture in winter too; these markers are not a feeding schedule.
Peak careActiveReduced care
Care tips
1A sunny, sheltered position and a well-drained root zone suit many bottlebrushes. Check container moisture regularly; frost tolerance varies with species and cultivar. Feed only during active growth. Prune selectively after flowering to maintain natural branching.
Fruit & seeds
Fruit and seed formation
Small woody capsules may remain on shoots long after flowering.
Harvest and use
Seed may be used for propagation, not eating.
Plant knowledge at a glance
Position, benefits & character
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Position & soil
A sunny, sheltered position and a well-drained root zone suit many bottlebrushes. Check container moisture regularly; frost tolerance varies with species and cultivar. Feed only during active growth. Prune selectively after flowering to maintain natural branching.
Distinctive features
Long stamens give the spikes their brush shape. Callistemon is also treated botanically within Melaleuca.
Benefits
Distinctive flowers and evergreen structure for sunny, sheltered container positions.
Partners & symbioses
Open flowers may feed visiting insects; availability and visits depend on species and position.
Pruning & growth habit
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Densely branched shrubs, sometimes with arching shoots; small tree forms also occur.
1. Shape after flowering
Shorten faded shoot tips sparingly; avoid indiscriminate cutting into old bare wood.
Nursery forms
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This overview explains nursery supply forms. It does not indicate current availability in the GREEN24 shop.
Container-grown
Common form
Branched potted shrub.
Standard
Ask a specialist nursery
Trained standard; account for crown size and stability.
Propagation & grafting
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Propagation
Semi-ripe summer cuttings preserve cultivar traits. Seed is possible but may not come true.
Grafting
Not required for ordinary container shrubs. Cultivars are often propagated vegetatively.
Species & cultivars
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Callistemon citrinus 'Firebrand'
Red-flowered selection; one cultivar does not define the hardiness of every bottlebrush.
Pests & diseases
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These signs support an initial assessment. Different causes may look alike; choose a treatment only after identifying the problem.
Check winter conditions
If leaves fall, check light, moisture and temperature; inspect shoots for scale insects.
Hardiness · USDA
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Species and position matter
No single minimum temperature applies to this group; consider species, cultivar and container roots.
USDA zones describe long-term average winter extremes. Containers, young plants, wet soil, wind and late frost need separate consideration.