QuestionsHow to growTrees and ShrubsFrost damageDamaged callistemon 0 Vote Up Vote Down Noel O\’Connor asked 14 years ago I have 2 Bottlebrush shrubs which were badly by the frost.Growth is not visible.Should I cut these out now . 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Bottlebrush or callistemon are badly damaged by frost and unlikely to recover. Â