Root impacted pots

Question

We have two very large pots that are fairly root impacted by the quite mature bay trees. They are in full sun from about midday until early evening and I’m not sure what to put at the base of the bay trees: some colour would be lovely. Mini hydrangeas have done well in the cooler weather but it’s too hot now! Grasses? Agapanthus? Please help!
Angie
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Answer 1

This article may give you some ideas
https://www.gardeningknowhow.com/special/containers/container-garden-arrangements.htm