How to fill gap in flowering

[Wheeeeee]

I'm looking for recommendations to fill what's currently a gap in my flowering border. To give a sense of timings, I'm quite far north and in a bit of a frost pocket so my alliums and peonies have just gone over but roses and lavender are still in bud and sweet peas are only just getting growing. Some geraniums are flowering but I'm perhaps looking for something with a bit more height. I know I could head to the garden centre and whack in a load of bedding annuals but ideally I'm looking for something a bit more sustainable. Any suggestions, lovely gardeners?

Erysimum?

Fantastic suggestion - for some reason mine have done abysmally this year, which isn't helping my gap! They've hardly grown and barely have a flower on them ☹️

Feels like you’re about 6 weeks behind us, my roses have been out for quite a while. A weigela might work well, ours finished flowering a month or so ago.

Geums? Mine have been out for a while now.

Probably a bit late for what you want as we're further south but my adenophora have just started flowering and are glorious. Great for giving height in the border.

Your garden sounds about where mine is. What is tall and flowering madly right now are the delphiniums and clematis climbing up a trellis.

Thanks all, some great suggestions! I have a weigela in the border but it's teeny tiny at the moment so just needs a couple more years of patience!

Geums - great shout. I couldn't grow them in my previous garden so they hadn't occurred to me but looking at other people's gardens they seem to do well round here.

Probably can't do clematis in this particular border as there's nothing for it to climb and putting something in would be logistically tricky. Delphiniums are another great idea though - are they quite hardy?

I've got lots of different geraniums of various sizes and stages of bloom - for height and long flowering get something like Anne folkard and give her plenty of support.

If you don't mind poisonous plants, monkshood can be quite similar to delphiniums and IME tougher.

Nepeta, salvia, verbena? Both are in flower in my garden (SW) & are perennials that are good for wildlife.

I have small children so probably giving the monkshood a swerve for a few years yet. Geraniums do seem to do well round here so will look into the one you recommend - the ones I have at the moment are more ground cover varieties.

Nepeta and salvia definitely struggle with the climate here unfortunately (west Scotland - a bit chilly and very very wet). Not sure about verbena but haven't seen it growing locally so I suspect it might fall into the same category. A shame as I love all three!

Some of the sprawly geraniums will go up if they've got some support. I reckon Roseanne might to some extent.

My Astrantia are absolutely gorgeous and doing well in our stony clay soil. They started slowly but are now huge and flower for ages, and definitely fill the flowering gap you're looking for.

I'm in the North East my glads and delphiniums are just about to flower

Sorry NE England just realised you are in Scotland, didn't want you thinking Aberdeen

Astrantias, thalictrum, hosta, foxgloves, erodium, hemerocallis.. hardy geraniums: I cut half the plant back during Chelsea.. it extends flowering period and bridges that gap, astilbes are coming up, verbascums and veronicastrum.
And grasses... always good...

I am NW Scotland..

Delphiniums are another great idea though - are they quite hardy?

The blue ones have been in my garden. I've planted some of the other colours but they've never lasted too long. The blues come back very strongly year on year.

Verbena Bonariensis?
Russian sage?

Right, I'm going to add these to my list for next year: Delphiniums, astrantia, geraniums, geum, gladioli or verbascum, veronicastrum.

I have a totally irrational dislike of hemerocallis and I've never had any luck with thalictrum though I think it's gorgeous. I also love verbena and perovskia but suspect they will struggle.

I've got lots of astilbes and hostas as I have a lot of damp shade, but this is my one sunny(ish) bed so looking to cram in things I can't grow elsewhere.

Thanks everyone!

Lupins are v hardy ime. My purple-blue ones are just going over. Good height and very wind tolerant but might be susceptible to slugs. Geranium Ann Folkard is a bright purple and goes to 40-60 cm in height and might scramble higher.