I am at the start of planning a cut flower garden too. I moved into a new house last year and spent some time testing out different flowers that I like and that work well in my garden. I’m still testing things out, but have found cosmos to be my favourite by a mile!
They are easy to grow from seed, and aslong as you deadhead them, they will keep flowering. Mine are still going strong now and are so beautiful. They are also pretty sturdy, unlike some flowers that loose petals easily, you can be a bit rough with these when arranging and they will still have all their petals and still stand strong. The foliage makes a great filler too.
Also, you can easily harvest seeds from your plants for the next season 🥰
A couple of others I like that aren’t intentional, but found to be good fillers that were mostly in my garden when we moved in and just tried and tested them as cut and dried flowers:
- Honesty (brilliant when dried and also easy to collect seeds)
- Dried Poppy Seed Heads
- Verbena
- Feverfew
- Achellia Mollis
- Yarrow
- Lavender (always)
- Eucalyptus
- Achillea Ptarmica (beautiful small white flowers, also good dried)
As you can probably tell, I like quite natural and wild bouquets, so these might not be to your taste, but hopefully you find something different / useful.
Bhudlejia flowers also look great in a vase.
I love poppies, but they just din’t last at all in a vase, they are too delicate and last less than a day with their petals 😔