Tropaeolum

A winter-growing form of these climbing plants, they start to grow in late September and flower in the late spring. Their hardiness is probably limited if temperatures fall below about -5°C for an extended period but they are actually happier grown somewhere cool rather than too warm. If in some doubt grow them in pots with something to climb up and then protect them with some fleece if required during the very coldest weather. Reports from happy customers suggest that they really cheer up the late spring with a blast of long lasting colour.