It’s time to...

…deadhead shrub roses to encourage them to produce more flowers.

Do I need to use special seed to grow lettuce over winter? – David Henderson, Stonehaven

Winter varieties are particularly hardy and can cope with low light levels and so can be sown from now until the end of autumn.

Is it possible to grow lupins from cuttings? I’ve got a really nice pink one that I’d like more of. – Bev Lamb, by email

In late spring remove a couple of stronglygrowing side shoots and place them into little pots of compost and keep them somewhere warm until they root.

Can I clean the trunk of a white bark maple that is covered in moss and lichen? – Bill Sinclair, Perth

Yes, you’ll do it no harm by scrubbing the bark with a warm water and mild soap and the tree will regain its bright colour.

email your questions: ps@sundaypost.com