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Any idea why my Ipomea Violacea flowers remain all white, in deed almost all white: there are sometimes little little diffuse stains of purple at the basis of the corolla.

It should be deep blue/purple.

Not enough sun, fertilizers, pH ?

I thought it was an easy plant to grow.

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up vote 2 down vote accepted

Ipomea violacea isn't always violet coloured - it comes in white, pink, bi colour and purple, so unless you bought a named variety which specifies the colour, yours just happens to be white with a hint of purple.

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so I will have to check that next year. I wanted them to be deep blue/purple :-) –  Stephane Rolland Aug 13 '12 at 12:46
    
Yes, check the colour - sometimes sold as purple I. violacea, I. violacea purpureum, sometimes as I. tricolor, but some confirmation of the colour is necessary. –  Bamboo Aug 13 '12 at 15:24
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