description for "Geraniums: Pelargonium 'Pillar Salmon'" 'Pillar Salmon' Geranium is one of the most unique geraniums to come along in years. 'Pillar Salmon' is extremely vigorous yet branches well, producing clouds of large billowy flowers. It's uniquely suited to growing as a pillar or pyramid. Plants should be supported as they grow by using a rose pillar support; tie as needed.