Slug/snail proof flowers for plant trough?

[supersun23]

Can anyone recommend any for our patio trough planter on the patio? So much gets munched over night!

Pelargoniums, antirrhinums, stocks, alyssum, lavender, salvia - the ‘lips’ type like hot lips. All seem slug proof in my garden which is very prone to them. Avoid dahlias, they’ve devoured mine again.

My lobelia is surviving well, also a nice little plant called mimulus (a bit like petunia). Small fuchsias also good.

This is interesting, last year there were legions of the blooming things. This year hardly anything, even my delphiniums

Geraniums, lavender, mont bretia ( long thin leaves, orange flowers on a spike), vinca.

Nasturtiums seem to surviving a long with lavender, foxgloves, aquilegia though probably too late for the last two this year as mine are about done.

Lots of hardy tropical foliage plants are also not bothered by snails - palms, cannas, bananas, colocasias, ferns, ornamental grasses, tradescantia. I also haven’t seen any damage on my coleus.

On the flowering side, other than already mentioned I would also add Eucomis, Californian poppies, zinnias, nicotianas, brugmansia, echinacea, achillea, and many spring bulbs including allium.