If you don't like cut flowers and your friends/family know this then they are clearly not giving any thought to you whatsoever. Chocolate are also known to be the 'I can't be bothered to think about what to buy' substitute.
Personally, I've been known to refuse flowers from the delivery company in the past and they've had to take them back to the shop and notify the buyer that they've been refused. As far as chocolates are concerned, I've looked at them and said 'thank you for the thought but you know I don't eat (nuts/ plain choc.....), so these are of no use to me'. My ex- husband was the worst culprit for this, he knew right from when we first met that I can throw up just looking at a box of Ferrero's, but he insisted on buying them every mothers' day, birthday, easter and xmas, suffice to say I didn't tolerate him as a husband for too many years!
I know it's meant I've ended up with no gift from the giver on that particular occasion but they get the message eventually and if they don't, I just send them the chocolates back for their birthday/xmas and have even made the point of putting a post-it note on them saying that I'm regifting them back to them because I've told them several times that I don't eat/like them.
If rather have nothing than something I hate.
My son is an absolute star though, even through the pandemic, rather than buy something random he knows that is hate, he's sent me a lovely card with a little note saying "I owe you ..... a day out/lovely meal/book/gift of your choice at some point when we can get out to choose something properly".
Basically, what I'm saying is that there's no excuse for buying things that wouldn't be enjoyed or are simply thoughtless just as a way of sending something/anything on the specific date. A thoughtful card and a note to say you'll do something at another time is much better!