London,
United Kingdom 
last week you idendtified a problem with my hydrangers which i have taken your advice ( thanks ) but i have hydrangers nearby which have no signs of scale but as they were about to flower they shivelied snd no bloom can you help
25 Jul, 2010
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Water - not enough of it. When in drought, hydrangea flowers will be smaller than usual, and will shrivel if seriously thirsty.
25 Jul, 2010