Black spots on Lantana

11 years ago

Hi all, was hoping for some help on identifying (and solving!) a problem with my Lantana. It's actually doing alright, a little scraggly because I haven't been good with pruning it, but a decent amount of flowers and new growth. The only problem are these weird black spots on the leaves - they affect both old and new leaves. Can someone please tell me what might be causing them and then how I should go about ridding my plant of them?

My Lantana is planted in a container, about a year old, we water infrequently, and it hasn't had a soil change since it was potted.

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