About

Pelargonium tetragonum, the square-stalked geranium, is a slow-growing, tender subshrub with a sprawling, branching habit and distinctive square, jointed, succulent stems. It has few small, fleshy, lobed leaves � sometimes with dark-red zonal markings � and produces pairs of pale-pink or cream flowers with two large upper petals veined dark red in summer. A fascinating and architectural species pelargonium for a frost-free, sunny conservatory.

About the genus

Pelargonium are perennials, sub-shrubs and shrubs � sometimes succulent and mostly evergreen � with palmately lobed or pinnately divided leaves and clusters of slightly irregular, five-petalled flowers in shades of red, pink, purple, orange or white. Widely grown as houseplants, patio plants and bedding.

Growing conditions

Plant details

Care notes