Following the last two articles on Chrysanthemums, this month’s article, in a series of occasional articles on gardening, looks at Dahlias.

Dahlias, originally from Mexico, are tubers and are relatively easy to grow in the ground or in large pots. Plant in late April or early May and they will flower from late summer to the first frosts. They like a loamy soil and sun but are very tolerant of most conditions. You may have your own tubers saved from last year or they are readily available from gardening centres but decide in advance how tall you want your plant to grow – some varieties exceed 4 foot in height!

To plant, dig a hole some 6 inches deep and insert the tuber so its crown is about 3 inches below ground; planting distance depends on the variety. No need to water at this point. To increase bushiness of the plant, pinch out the tips of the main stems after 3 or 4 weeks; you can also increase the length of the stems by removing unwanted laterals from the main stem about 2 weeks later and get bigger, but fewer, flowers by removing side buds. Water thoroughly when dry. Feed during July and August. Dead head to prolong the flowering period.

Once the season is over, cut off the stems and lift. Turn upside down and allow to dry for a few days and then store in a box on top of a layer of dry compost with the roots , not crowns, covered by more compost. Store in a cool but frost free place.

Enjoy your garden this summer!