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I’m told to get best effect with Heuchera the flowers should be removed is this correct?
No it’s not!
You do not need to remove the flowers only the dead flowers, you don’t want them to seed. If they seed then they are using energy for seed instead of foliage.
Only time you need to remove flowers is if you don’t like them!
The bees love them and if you like flowers keep in them on.
Hope this helps
Kind regards Vicky
Vicky and Richard Fox