Magic Kingdom. (Dingly Dell)

Hi hannahbanana, I love what you are doing to your garden, your grandson must love it. I would think near the post box you have room for Cowslips and English Bluebells and perhaps a Helleborus niger (Christmas Rose), also to encourage Hedgehogs you could build a shelter?

Thank you for your ideas. Yes, I love Helleborus and have some out of sight of the photos. Cowslip would be good in the dappled light. I can't have English bluebells as when we moved in our whole garden was covered in thousands of Spanish Bluebells which my husband has spent hours trying to dig up in case they caused problems with our native bluebells in a nearby wood. It may take a few years before we are truly free of them then we can hopefully replace with our native bluebells.
Part of the Dingly Dell is quite dry under the trees but one area is quite damp so should give scope for quite a few plants. Yes... a hedgehog shelter would be a great idea.

Welcome from me too Hannah....your garden is gorgeous and it's great that your grandson has enjoyed what you have done so far. Drc's suggestions are great - I do hope you take some ideas from this.
Love your little 'light' post box....working for RM - I have certainly emptied quite a few of these in my time :)

Welcome to Goy Hannah, Your Dingly Dell is lovely and I`m sure will bring lots of enjoyment to your grandson as well as yourself...

Welcome from me too,Hannah..love what you have done for your Grandson,and you have made lots of progress in your garden..and you seem to have lots of plans for the future ..:o)

Welcome to you, Hannah. What you have done looks great so far. If you like hellebores GW has a good offer this month - worth a look. Dodecatheons and tiarellas do well in shade and are very pretty too!

It's a magical place. I'm sure your grandson will love it :o)

Your grandson may enjoy a small pond with a fountain and some fish if OH can spare time this winter to dig a hole for the plastic liner. Will need a metal frame cover for safety.

Wood anemones would make a good addition to your Dell too, and perhaps some foxgloves which would self seed ever after. And how about some small daffodils such as the native one the Tenby daffodil?
For some different foliage and red berries in autumn try Arum italicum maculata (But only if the child can be trusted not to eat the berries!) Ferns would be lovely too, how about an Athyrium felis-femina, the Lady Fern, or the harstongue fern if the soil is moist?

I loved your blog Hanna, your idea of making a special place for your grandson is wonderful! I would suggest columbine and corydalyis, they are woodland plants with pretty lacy foliage as well as beautiful flowers:)

Welcome to Goy what a lovely garden and blog:)

What a lovely idea Hannah :) I hope your grandson really enjoys spending time there, and posting his letters!

Thank you everyone for all your comments and ideas.
I am pleased with the Dingly Dell so far as it is early days. Over this next winter I will decide which plants to add next spring. By then I will know which plants already suit their conditions. The ferns have done well but the hostas are spoilt by slug and snail damage. I intend to add a small water feature (thank you Dianebully for that idea) perhaps a solar one would fit the bill.