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Why is it White when it was Purple?

in Plants
Hi Everyone, I have had a Purple Passionflower in my garden for the past 4 years. Last year it didnt flower but this year it is a mass of flowers but the are all white!! I know plants can revert to the natural colours over time but I thought the purple was the original heres a piccy
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Hi from Kingswinford in the West Midlands
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The photo looks like Passiflora caerulea 'Constance Elliot' which can have white or blue filaments http://www.crocus.co.uk/plants/_/passiflora-caerulea-constance-eliott/classid.1698/ , but I don't know why yours used to have blue and now has white - is there more than one stem coming from the roots - could there be two plants there?
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Hi Dover, Only one stem and its never had a single white flower before this year.
How odd - maybe it does change on the plant
It certainly looks like Constance Elliot doesn't it?
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
It certainly looks like the one on the link. Ill keep an eye on it and see any of the other buds do open purple.
Are you sure someone didn't manage to kill the first one while you were away for a weekend and they got another and planted it and that's why it didn't flower last year ........... I'm always one for a conspiracy theory
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Who was Constance Elliott ??? Anything to do with these two?
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Im positive no-one killed it off last year. I think I was a bit harsh with the pruning so it just didnt flower just plenty of leaves. A bit like my wisteria, although I'm certain Ive got it right this year and I just know I am going to have so many flowers next spring........
I have had a few strange colours this year. My Rosa filipes seedling that normally has a pink bud, but opens to white,has all pink flowers at the top of the hawthorn where it gets more sunshine. The rest of the flowers are white.
I have a dahlia,that for 2 years has been peach and coral, but this year is opening a much deeper colour.
certainly some sweet peas that I have are a much deeper colour than on the packet. I have put it down to the weather. I cant see what else would be different. The dahlias are in a different position, but the rose is neither pruned nor fed.
I found this tonight looking for a Cornus. Maybe the weather does have something to do with it.
Cornus kousa 'Miss Satomi' is an exceptionally free flowering selection with masses of large, rich-pink flower bracts in June. On occasions white flowers may be borne, sometimes on the north side of the plant whilst the south facing aspect has pink flowers.
Will its on a southfacing fence and always has been. The funny this is I quite fancied a white one and thought I might plant it close by so they would intertwine. Perhaps senility really has set in and I did this and just forgot about it!!!!!