Why isn't my red chokeberry leafing out?
I have four aronia arbutifolia shrubs planted in various places: sun, part shade, pot. All have the beginnings of leaves, but none have fully leafed out. They have looked like that for over a month. Meanwhile, the aronia melanocarpa are fully leafed out.
What's the problem? Why is the red different from the black in growth? I'm in zone 6b.
Thanks for any help.