Q Would pruning help my Å ß ° â Ì« Ó â
Theresa Ste, by email
A
MATT SAYS Lacecap hydrangeas, which have flat flowerheads surrounded by a ring of larger florets, benefit from annual pruning, either in autumn in milder locations or in late winter and early spring. Cut out two or three of the oldest stems at the base to encourage new stems that will keep your hydrangea blooming. Also cut out any weak stems after flowering. But don’t cut back the whole plant to the base or it won’t flower until the following year.
To boost flowering, you can also apply a high potassium feed in early spring, such as sulphate of potash or tomato fertiliser. Avoid nitrogen-rich feed, which stimulates leafy growth instead of flowers.
Applying mulch helps to retain moisture in the soil, which is also a necessity for flowering. Spread a 5-10cm layer of well-rotted organic matter, such as garden compost, over damp soil in spring.