Any advice on very shady planting?

[lazysummer]

I would like to plant under a big beech tree at the end of the garden: it's a real mess with 2 ferns, a few geraniums and laurel, though loads of snowdrops in the spring. So I want something to lighten it/ provide interest. My current thinking is ornamental grass, but I have never planted grasses. Are they very invasive? Will they survive? Is there anything better? I don't do hosts, as the slugs demolish them. Thanks in anticipation.

Hello!
Most grasses are happier in sun, so I'd go for Brunnera macrophylla 'Jack Frost'. It's a lovely plant with handsome big heart shaped leaves, with silver markings and pretty pale blue spring flowers. It really brightens up a dark corner.

Hosta's, Japanese anemonies, Ferns, Hypericums, Ladies Mantle, snow drops.

White foxgloves?

This nursery is brilliant and full of advice www.plantsforshade.co.uk/

You could just double/triple what you've already got happily growing there. More of a mass planting will look more thought out than randomly dotting in another different type of plant.

Dahlias and anemone japonica and giant primulas all tolerate shade.

Geranium phaeum - does really well in dry shade. Ferns are good but pick the right ones. I also had a Brunnera which is a lovely plant but doesn't like it too dry/shady together and won't grow that big so you need a few. Japanese anemones - lovely but can get invasive

Our shady spot is more of a problem because it's so dry. You may find that keeping an eye on how dried out its getting really helps whatever you plant. Sorry if that's obvious, it's a revelation to me in our new garden!
I'm not sure about grasses, so I won't coment on that.
I'm planning Ammi magus for under our trees, which are big, light and hopefully not too fussy!