That is a problem scene, Brian. To my way of thinking, the bulk of the whites are a bit on the dark side, but there are a few small patches which are on the point of over exposure. Maybe you can do a Curves adjustment to slightly brighten the midtones while holing back on the highlights; or use a very carefully edited mask to vary the amount of any brightness increase. Tricky, whatever you do.
I suspect, Brian, you could now boost the overall brightness level a little bit more; but watch for any problems.
Frequently, I do the same with my images. Firstly correct any potential problems then adjust the overall scene to suit.
Seeing your garden images, many a time i felt that you have a natural reluctance to compose images; not blaming you, but understanding you.....
I got it