Can anyone tell me why alot of the flowers on my Nevada rose are very pale pink but in Spring and Autumn they are the true colour creamy yellow. Also I have the rose Agnes rose and this yr it flowered for the first time and they are the same pale pink
Climate, season, and soil can alter the color of a rose. This is true of many tea roses (I do not mean hybrid teas) and some of the heritage roses.
One of my container-grown roses changed to a much paler colour when I allowed self-seeded geraniums to grow in the container. I pulled them all out , top dressed it , gave it some fertiliser and the next flowers were the normal colour.
It's often temperature dependent with roses.