Callistemon rigidus

Stiff Bottlebrush

Callistemon rigidus, or the Stiff Bottlebrush, forms a bushy evergreen shrub with narrow dark green leaves. In summer it produces dense spikes of deep red flowers that draw the eye and add energy to borders. Medium in size, it is a reliable choice for Irish gardeners seeking strong summer colour.

Flowering Months

Jan J

Feb F

Mar M

Apr A

May M

Jun J

Jul J

Aug A

Sep S

Oct O

Nov N

Dec D

Size

Max Height

1.5 m — 2.5 m

Max Spread

1.5 m — 2.5 m

Growth Habit

Densely branched plant with compact, leafy, rounded overall shape.

Planting Position

Sunlight i Indicates how much direct sunlight the plant needs each day. Full sun means 6+ hours, part shade is filtered or morning sun, and full shade is little to no direct sun.

Full Sun

Aspect i Aspect refers to the direction the planting spot faces (north, south, east or west). It affects light levels, warmth and exposure.

South West

Exposure i Exposure describes how sheltered or exposed a plant’s position is, particularly to wind and weather.

Sheltered

Hardiness i Hardiness indicates how well a plant tolerates cold conditions outdoors. Higher ratings generally mean greater frost tolerance.

(−5 to +1 °C) Half-hardy

Ideal Soil Conditions

Soil Type i Soil type describes the texture of the soil (clay, sand, loam, chalk). This affects drainage, nutrients and how roots grow.

Clay Loam Sand

Soil Moisture i Soil moisture tells you how wet or dry the soil should be for best growth. Match this to your garden conditions for healthier plants.

Moist but permeable / Free draining

Soil pH i Soil pH measures how acidic or alkaline the soil is. It affects nutrient availability and can impact plant growth.

Acid Neutral

Plant Uses & Merits

Uses

Patios / Courtyards
Coastal Areas
Against Wall

Callistemon rigidus

Stiff Bottlebrush

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Callistemon rigidus

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