Prune hydrangeas

TV and radio broadcaster Martin is an RHS judge and former head gardener

Quite by accident, Anne Greenall discovered that hydrangeas flourished in her garden overlooking the Firth of Clyde and she went on to amass a collection of more than 200 varieties

Magnolias are best left to grow naturally, as they tend to form attractive, layered structures without intervention. They rarely need major pruning – just the occasional removal of dead wood, crossing

Your hard work in the garden is paid back this month – but keep on pruning and planting to enjoy even more fruits from your labour

Now’s the time to add some summer stars for a burst of colour

How can I save my cordyline? It’s possible ...