I bought a rose bush, which is quite small. When I bought it it was covered with around 50 really small roses and another 50 odd buds. The flowers were a pretty pink. I'd like to believe they were a bluish pink...not quite mauve. Over time the blooms wilted and the new buds opened. This continued for a couple of weeks. Suddenly I notice the blooms have turned a deep red. What is happening ? I checked...it's a single graft. There were pink flowers on a branch and now there are these red flowers on the same branch. What could be going on ?
Roses can be a sport or change. Sport can be a color change or growth habits (the sport climbing or repeated flowering). Pink Knock Out Knock Out and blushing is a sport of color of the original Knock Out Sometimes, however, sport can be returned to the parent color. I saw Pink Blushing KO KO plants and flowers, which are bi-colored or a KO back to cherry red.
So will the colour come back ? Is there anything I could do to get the roses to flower in the original colour ?
I bought three roses bushes...I don't know what they are called...they are small...with small leaves with clusters of small flowers. Two of these bushes now have different coloured flowers than from what they had when I bought them. One I've described above...the other one had dark pink flowers till Christmas and now the blooms are a blood red...almost artificial looking.
There are 2 different aspects for colour change.
1) This is regular feature where the colour of the flower changes with exposure to sunlight.
There are many varieties available in nursery with different shades of colour from yellow to lavender(Paradise) ultimately changing to darker colours.
2) The other one is sport, it happens when the grafted rose revert back to its parent colour as a result of mutation. You will see in the following link the last picture of typical sport phenomenon.
From the same branch 2 different colours. It happened repeatedly for 3 months. It was surprising for me first time and not after.
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