As a photographer, I’m very aware of the difference that light makes to flower colour. The pictures on this post are both of the same rose ‘Rhapsody in Blue’, but you can see how the light has changed the way the colours appear.
The top photograph was taken in the evening, at a time when the sinking sun was creating a warm golden glow over everything. This has made the flower petals look much more magenta. Their red and pink tones have been picked out by the warm light.
The second photograph has been taken nearer the middle of the day. (On a day which has been just overcast enough to soften the shadows which might otherwise have been very harsh.) See how much more purple there is in the petals in this light. That’s because the light is more neutral, allowing the flower’s real colour to show.
If I had taken the second photograph on a day with heavy cloud, I would probably have got stronger blue tones in the flower. (And more yet if I had chosen to photograph during ‘blue hour’ before dawn or after sunset – but that’s getting a bit dark for my purposes!)
Exploring how changes in light affect colours is all part of the interest of garden photography. But right now, after a very grey few weeks, I’m grateful for every bit of bright sunshine we get. The last few days have been hot and sunny and it feels as if summer has returned to us. I only wish it would last a little longer!