QWhat’s the best way to overwinter lophospermum? Helen Mealey, by email A Lophospermum scandens (previously known as Asarina lophospermum or Maurandya lophospermum) is a perennial climbing plant, native to Mexico, with triangular leaves and tubular, purplish-pink or red flowers. It can twine to a height of 1.5m (5ft) or more, but isn’t hardy so it’s usually grown as an annual from seed each year, although plants can be overwintered in a heated green house or conservatory. L. erubescens is similar in all respects.
Keep plants just frost free at about 3-5C (37-41F), and fairly dry. Pot in a John Innes No 3 compost with added sharp sand. When in growth, water moderately and liquid feed monthly with Miracle Grow, phostrogen or a tomato feed.
This unusual plant needs frost-free conditions