In my first reply, I couldn’t think of any bedding plants that avoid slug damage as they are generally soft and easy targets. However, as others have mentioned, there are quite a few perennials that don’t get slug damage and attract pollinators. In my garden these include Salvia caradonna, Nepeta and Heleniums. Avoid planting anything in the ground with tender juicy leaves like Dahlias, they’ll be easier to keep an eye on in pots, preferably elevated!
I have minimal problems with slugs as I have stopped trying to grow anything they want to eat. An exception is hostas which I grow in pots . They do well until I get bored with disposing of slugs and snails.
I'd add Heucheras to to list as slug resistant and I'm always amazed at how many pollinators the tiny little flowers attract. Just keep in open ground though rather than pots if you want to prevent vine weavil damage.
I can add oriental poppy (bees squirm around furiously inside the flowers) and bleeding heart l/Lamprocapnos spectabilis. Also some plants that might be too small/big for your purposes such as Thyme, Oregano & Rosemary.
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An exception is hostas which I grow in pots . They do well until I get bored with disposing of slugs and snails.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Cambridgeshire/Norfolk border.