Garden Answers (UK) - - Problems Solved -

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.

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