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preparing a ponsettia
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When do I restrict the light to turn the foliage red
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There is quite a complicated series of light requirements to do this efficiently but as I understand it you start decreasing it from the end of august, but quite slowly and progressively. We tried to do it at the garden centre I advised for a while, but with very patchy results. Might be best left to those with computer controlled blinds, but good luck.
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