horseshoe geranium

One parent of most zonal pelargoniums, P. zonale is an erect, bushy plant with fleshy stems turning woody with age and smooth, rounded, mid-green leaves with a narrow, dark green zone. Generally grows up to 1m but up to 3m against a wall under glass. Clusters of narrow-petalled, pink, white or purple flowers can be produced virtually all year in warm, bright conditions, otherwise in summer and early autumn