Planter ideas for summer

[Symposium]

I've got 2 quite large long planters outside my house. I've had a lovely display of tulips for the spring but as these have now almost all died back I'd like to put something else them for the summer. I'd really like something with some height like the tulips but not sure what would work? Any ideas gratefully received.

Do you want it to be temporary, ie., annuals? You could have fun with things like cannas or ginger lily or ipomoea or whatever, and do a 'jungle' look.

Or you could go classic country garden and pop in some lavender or nepeta, or even some dahlias?

What sort of look do you like?

Depending on the size of the planters, agapanthus love having their roots restricted so are ideal in any kind of pot.

Thank you for the ideas. Yes I'd like something temporary as I quite like idea of changing the planters regularly and having different flowers to enjoy. I've always loved dahlias and never tried them before. My mother always told me they are hard to grow, so that always put me off!

It's keeping dahlia tubers over winter which can be a faff I think.
Last year I bought a pack of 'bedding plant' dahlias - not the big fancy types but good plants with lots of flowers, cheap so they're just the bung in for one summer type of plant. I did lift the tubers and store them though, to see if they'd survive ...I'd forgotten, I'd better try to find them and see what they're doing!

https://www.sarahraven.com/products/nicotiana-whisper-mixed?gadsource=1&gclid=CjwKCAjwoa2xBhACEiwA1sb1BBwessBHmquoZguIT5ZcjqbkLn0DNaRp9t9OMP7WXsf0jdaaJ0EWxoCp-AQAvDDBwE

I was going to suggest Sarah Raven for some inspiration. She has a mantra about three plants per planter - a thriller, a spiller and a filler. So something dramatic, something that dangles and something a bit more background/with less showy flowers.

That is not a Sarah Raven thing!

(I think Sarah Raven does a good job advertising herself, and some of her colour combinations are lovely, but her plant quality has gone right down, and I'm not keen on her being given any more credit than she's earned! )

Achillea and Erigeron are good. Achillea taller and Erigeron tumbling over the edge