Before planting outside, they will require a short hardening-off period in a cold frame or cool greenhouse.

At Planting Fields, they are crowded into a cool greenhouse.

This is a tender plant which us usually grown annually as a houseplant or in a cool greenhouse.

Inside, they prefer a cool greenhouse or a chilly window.

A hanging basket of it can survive over winter in a cool greenhouse or a bright, underheated room.

Mr. Winterrowd winters over tropical plants like those in a cool greenhouse.

Overwinter in a cool greenhouse, keeping the compost slightly moist to help roots form.

They may also be dug up before frost, cut back and kept in pots in a cool greenhouse or sun porch.

You could winter large plants in a cool greenhouse, or bring small ones, made from rooted cuttings, into a sunny window.

Regrettably, they cannot survive winters in the North unless they are inside a cool greenhouse.