Named and grown for its fuzzy spikes of bright red flowers, crimson bottlebrush is a large, spreading, evergreen shrub or small tree native to eastern Australia. It has stiff, flat, narrow, lance-shaped, green leaves which are coppery colored when young and which emit a lemony aroma when crushed. The flowers appear in heaviest abundance in spring and summer, attracting hummingbirds. The fruits are cup-shaped, small and woody and release hundreds of tiny seeds. The bark is gray to grayish brown in color, often with lots of tiny fissures. The old fruit capsules remain on the twigs, revealing where last year's flowerspike once appeared.
It makes a colorful tall hedge or specimen shrub that can be pruned into a more rounded shape. It would also make a very handsome espalier on a bare foundation wall.
Grow crimson bottlebrush in full sun in well-drained, neutral to acidic soil. Naturally it grows on streambanks, and thus can be also grown in soggy soils. It has a good tolerance for alkaline soils and seaside locales.
Information source: http://learn2grow.com/plants/callistemon-citrinus/
Genus - Callistemon
Species - Citrinus
Common name - Crimson Bottlebrush
Pre-Treatment - Not-required
Hardiness zones - 9 - 15
Height - 3 - 8 m
Spread - 2 - 8 m
Plant type - Shrub or Small Tree
Exposure - Full Sun, Partial Sun
Growth rate - Medium
Soil PH - Acid, neutral
Soil type - Loam, Sand
Water requirements - Average water, drought tolerant
Bloom season - Spring - Summer
Leaf / Flower color - Green / Red
Sow seeds on the surface in February-March in a shaded part of the greenhouse.
Cover with paper and stand the pots in a few centimetres of water until germination takes place.
Remove from the water tray as soon as the seed germinates.
Seedlings are prone to damp off and must be watered with care and kept well ventilated.
When large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter, planting them out into their permanent positions in late spring or early summer, after the last expected frosts.
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