What's happening to my flowers?

Can you set up a camera? That is the only way you will know for sure. Do you have any deer that come in your yard?

They’re pulled out of the ground? Birds. Do you have crows?

Do you have moles or any other kind of subterranean dwellers who could be at work here???
Pushing them up as they move along…......

Do you have cutworms in your area?

Another vote for cutworms.

They’re a worm or caterpillar that cuts the stem right at the soil line, hence the name. You can make little collars of paper and put them around the stems to stop them. Push them down in the soil a little.

Paper collars and little bow ties and they’re ready for a special occasion. Sweet.

Cutworms come in several varieties. You may also want to look into some of the organic pest control means that are available. They are more expensive than the non organics and not as effective for large areas, but they should work well for a small garden.

@noelleptc That really sounds like deer. My neighbor’s roses looked like they were cut. The most amazing thing was how even the line was—at exactly the same height.

@marinelife

Lol, well at least I cheered you up ;-)
The only other solution I can think of would be a mischievous neighbour who’s up to, well, being mischievous if there is no other subterranean mischief makers that is ;-)… hope you solve this, let us know won’t cha…….
My second guess would be the wind though…....

if you live in the southeast, then from the storm it was probably that. sunflowers snap with any strong wind. my recommendation would be to put a little stick next to each stem and some twine to help stabilize them.

I suggest a good sprinkling of diatomaceous earth if it continues. That should get the buggers.