It could be vine weevil. Usually comes out at night to feast on leaves. The grubs of these insects cause plants (especially in containers) to collapse as the eat the roots. Some plants are more susceptible than others. Visit your plant at dusk with a torch to see if you can locate any. There are a few vine weevil killers on the market.
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The grubs of these insects cause plants (especially in containers) to collapse as the eat the roots. Some plants are more susceptible than others.
Visit your plant at dusk with a torch to see if you can locate any.
There are a few vine weevil killers on the market.
https://www.rhs.org.uk/advice/profile?pid=234