Bottlebrush Red Cluster
Bottlebrush, scientifically known as Callistemon citrinus, is a versatile evergreen shrub renowned for its striking crimson red flowers that bloom from summer through early fall. These shrubs can reach heights of 10-15 feet, making them excellent for use as screening plants. When pruned, Bottlebrush can be shaped into single or multi-trunk trees with small canopies, perfect for creating stunning statement pieces or patio trees in your landscape. Once established, Bottlebrush is highly drought and heat-tolerant, requiring minimal maintenance beyond occasional pruning to maintain the desired shape. Although cold hardy to zone 8b (20°F), severe or late-season frosts may damage the top growth, which can be pruned in spring, followed by fertilization to encourage new lush growth. Additionally, Bottlebrush is a fantastic addition to pollinator gardens, attracting a diverse array of insects, butterflies, and even hummingbirds.
Description & General Information
Scientific Name: Callistemon citrinus; Melaleuca citrina
Common Name(s): Red Cluster Bottlebrush; Bottlebrush
Native Range: Australia
Hardiness Zones: 8b – 11b
Mature Height: 10 – 15 ft
Mature Width: 10 – 15 ft
Flower: Red
Notable Plant Traits:
- Drought Tolerant
- Deer Resistant
- Attracts Hummingbirds
Cultural Requirements & General Care
Light: Full Sun (6+ hours)
Soil: Acidic well draining sandy loam to clay
Salt Tolerance: Moderate
Heat Tolerance: Good
Drought Tolerance: Very Good
Watering: Water well to establishment and through severe droughts as needed. Can tolerate regular irrigation in well draining sandy to sandy loam soils
Trimming: Very little trimming is needed. Blooms can be deadhead to encourage more growth. Trimming to control height can be done during the growing season. Lower branches can be removed to create a tree formed or canopy look.
Fertilizing: Fertilize in spring and summer with a well balanced granular fertilizer.
Uses In the Landscape
- Statement / Focal Trees
- Screening Shrubs
- Pollinator Gardens
- Espalier
Pests & Diseases
No notable pest issues. Fungal issues such as crown and root rot can arise in soil that stays to damp.