Deformed flowers are caused by very tiny four winged flies called thrips. This little pest can cause a lot of damage as it hides in the base of the infected flower bud sucking out the sap. Cut off all infected areas and burn then spray with an insecticide to get rid of them making sure you get the spray on the new growth as well as the base of all the flowers. A small hand spray bottle works well an insures more control.
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