TIME TO REPOT

Q Is my wollemi pine dying? JANET JONES-BUTLER, BY EMAIL

A You could cut off the main stem of your wollemi pine, but this seems a great shame. Allowing all the basal shoots to grow would result in a crowded plant. Instead, try repotting it in spring, using lime-free John Innes compost and a slightly bigger pot. Hopefully the growth will thicken out again.

Q Why did my potted hydrangea, agapanthus and tree peony all fail to flower? KIM CLYNSHAW, LONDON

A These three plants need different conditions so it’s strange that all failed to bloom. They are perennials and need a good quality compost so it’s worth repotting them in spring into a rich and loamy soil-based John Innes No 3 compost. If you’re growing them in pots, all three will need regular feeding too, either with a controlled-release fertiliser applied in spring or a weekly liquid feed from April to September. As for sunshine: the tree peony and agapanthus both need a position in sun while the hydrangea will prefer part shade.