Geranium cuttings
 

I love white geraiums and last year I had some pure white plants from a supermarket. I liked them so much I decided to take 10 cuttings last September over winter them in my glass verander and plant them out this year. All 10 cuttings survived ok and I have planted them into my garden expecting them to be pure white as last year. They have flowered a very pale pink, can anyone explain this?