Crop Rotation Group
Miscellaneous
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Soil
Fertile, well-drained soil enriched with compost or other organic matter.
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Position
Full sun.
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Frost tolerant
Varies with species.
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Feeding
Boosting soil fertility results in bigger, better flower clusters in heavy-flowering improved bottlebrush cultivars. Apply a balanced organic fertilizer twice yearly, once in spring and again in early summer.
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Companions
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Spacing
Single Plants: 4' 11" (1.50m) each way (minimum)
Rows: 4' 11" (1.50m) with 4' 11" (1.50m) row gap (minimum)
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Sow and Plant
Bottlebrush plants can be started from seed, but it is much faster to begin with a purchased plant. Set out in early spring and keep moist until vigorous new growth appears. In early summer, non-blooming stems are easy to root in moist potting mix. Spacing requirements vary according to the type grown. Check plant tags for a cultivar’s mature width or when planting as a hedge. Many new dwarf bottlebrush plants can be grown in 14-inch (35 cm) pots for a year, after which they will require more room.
Our Garden Planning Tool can produce a personalized calendar of when to sow, plant and harvest for your area.
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Notes
Native to Australia, bottlebrushes produce lemon-scented flowers throughout the summer, which in turn attract pollinators and hummingbirds. In hospitable climates the largest types can be grown into trees by cutting out suckers that emerge around the base. Bottlebrushes make a wonderful hedge plant where adequate soil moisture can be maintained. Visit local display gardens to learn about the best bottlebrushes for your area. The vigorous plants often must be pruned to help them maintain their shape, with late summer being a good time to cut back overgrown bushes.
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Harvesting
Bottlebrush stems are somewhat short and droopy, but they make good filler material for indoor arrangements.
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Troubleshooting
Bottlebrush leaves have aromatic compounds that deter feeding by pests, so they are often trouble-free plants when grown in hospitable climates.
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