Can anyone tell me why one of my Rozanne hardy geraniums has produced loads of leaves but no flowers please
You might be looking after them too well. They might be over watered and over fed. Geraniums need to be kept on the dry side - when any plant feels a bit stressed it will try to reproduce itself before it dies. It will feel the need to flower before it is too late. If you do feed, Tomorite is formulated to produce flowers so would be a good choice. They also like the sun so shady positions might hinder the production of flowers.