Add trailing verbena to complete the picture. The plants wilt and look very floppy, and the peat-based compost gets very dry. The best rescue method is to plunge the whole pot into a larger container of water. If the containers can be lifted, move them out of full sun and stand in large water-filled saucers. The plants are likely to suffer a severe check in growth, so a major re-think may be necessary.
Some folk swear by using compost with added water retaining granules.
Try siting containers out of full sun, choosing shade-tolerant begonias, impatiens, fuchsias, mimulus and ivies. More expert advice on containers . For specialist advice, send your questions to our team. Tips from fellow gardeners may help you. Your technical gardening terms explained.