By Ambman
Lancashire,
United Kingdom 
i have lilac bush wich fails to flower any advice
many thanks
1 Jul, 2010
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do you cut it back in the autumn or early spring? if yes this is why. the flowers form on new wood laid down in the summer. so leave it unpruned until late may/june. How old is it? and has it evr flowered?
welcome to GoY too.
2 Jul, 2010