In this video clip from Gardeners’ World, Monty Don explains the life cycle of biennial plants such as sweet rocket, honesty and wallflowers. He sows seed of wallflower Erysimum cheiri ‘Blood Red’, offering tips on a low-nutrient seed compost, pricking out the seedlings then growing them on. Watch now to find out more about growing biennials.
A slow-growing tree, ideal for small gardens, or patios. This new acer has dramatic palmate foliage. Purple leaves emerge in the spring, turning green over the summer, before returning to a purple-red hue in autumn.