United Kingdom 
white powder on white flame lower leaves browning
On plant
Phlox
4 Jun, 2010
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Annella
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Phlox Collection 6 Jumbo Ready Plants
£14.99 at Jersey Plants Direct -
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£8.50 at Burncoose -
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White powder's probably mildew (spray with a fungicide that treats this) and the browning lower leaves are probably dryness at the roots - Phlox hates to dry out.
4 Jun, 2010