Geranium Flower Buds Not Opening. May 16 2021 To determine if a compost is light enough for geraniums squash a damp ball of it in a tight fist. There is a small moth that lays eggs on the geranium leaves and within a short time its progeny starts burrowing into the buds and eating them.
Fertilize your geraniums properly to encourage blooming. Aug 05 2009 If some flowers have died but the whole bloom hasnt opened up entirely yet just pull off the spent flowers and allow the rest of the bloom to open. Geraniums are rarely affected by slugs and snails.
Mar 10 2020 They can also wreak havoc as caterpillars on geraniums in your garden by chomping holes in buds and leaves.
Indeed keeping the plants constantly moist will often encourage root and stem rot when temperatures are high and the plants are weakened by. Geraniums require well draining soil potassium fertilizer full sun and nightly temperatures consistently above 55F 12C to bloom in the Summer. Too much fertilizer might also be an issue. There is a moth that can appear about August or September that will chew the leaves of the zonals which needs catching in the evenings or eradicating with a systemic insecticide.