How to prune hibiscus
Hibiscus rosa-sinensis
Quick answer
Prune Chinese hibiscus (Hibiscus rosa-sinensis), the houseplant and tub hibiscus, in February or early March. Shorten the previous season’s growth to leave a framework from which new flower-bearing shoots develop, and remove thin, unproductive shoots.
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- When to cutFeb–Mar
- 01
Which hibiscus is this page for?
It does not cover the hardy garden hibiscus or rose of Sharon (Hibiscus syriacus), which is pruned differently, so do not use this advice for it.
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This page is not about the hardy garden hibiscus, Hibiscus syriacus.
This page covers Chinese hibiscus (Hibiscus rosa-sinensis), which the RHS lists as tender and grown as a pot plant indoors.
- 02
When and how much
Stronger growth can be reduced to 4 to 7 cm (2 to 3 in) from the base. A second source gives a different, gentler figure, cutting the plant back by about half its height in early spring for a compact habit.
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The RHS says to shorten the previous season’s growth in February or early March, leaving a framework from which new flower-bearing shoots will develop. Both agree on early spring, so choose the amount that suits the size of your plant.
- 03
Flowers on new growth
A second source says the blooms form on new growth, so pruning in early spring does not cost you that season’s flowers.
- 04
Keep it bushy
Regular pruning keeps plants small and bushy, and they may live for up to 20 years.
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The RHS says to remove thin, unproductive shoots and prevent overcrowding, and to trim the tips of young plants to encourage bushiness.
- 05
Temperature after pruning
The RHS gives a minimum night temperature of 7 to 10 degrees Celsius. A plant that spent the summer outdoors should come indoors before it gets colder than 12 degrees Celsius.
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A second source says the plant needs protection from frost and wind.
Common questions
When should I prune hibiscus?
For Chinese hibiscus, in February or early March, as the RHS advises.
How hard can I cut hibiscus back?
The RHS reduces stronger growth to 4 to 7 cm (2 to 3 in) from the base. A second source suggests about half the height. Early spring is the time in both.
Will pruning stop my hibiscus flowering?
Pruning in early spring should not, because the flowers form on new growth, according to a second source.
Does this apply to garden hibiscus?
No. This page is for Hibiscus rosa-sinensis. The hardy garden hibiscus (Hibiscus syriacus) is a different plant.
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