I don't think you realize the potential this idea has in the game. We're talking about a whole new economic sector that will create jobs, RP, and more conflict. The same thing currently exists with firearms, drugs, paydata, and all the resources that various factions in Sindome compete for, in one way or another. The importance of picking flowers
is based in the fact that with the variety of flowers at your disposal you can play more games of subterfuge with your foes, e.g. pretend you have crysantheums but you actually have lilies. Since we should tie flowers with chemistry this means the side with the best assortment of flowers will always have the upper edge as they have access to the better potions meaning better combat abilities.
Why stop there though? Artists should be able to "crush" the flowers and combine them with some scraps to make homemade lipsticks, eyeshadows, mascaras, etc, and also use them as seasonings to unlock new words for the chef's island. So you could pick up some cinnamon plants, and make "aromatic" meals or your own fragrances. Since we all know flowers are quite pleasant to smell we could also introduce a whole new fragrance industry and allow chemists or artists to create perfumes and sell them to people for money (and also allows for more things to do).
And let's not forget about wearable flowers. Like the OP originally said you should be able to put any kind of flower on your ear (left or right) to give your character an extra flair, and help you define their personality. To be honest everyone always talks about colored tattoos or making them look-able but that's not really going to help the game as much as letting flowers be worn. It would be great if you could sell them to certain shady figures in Red because flowers these days are so rare, especially in a dystopian world like Withmore, and they would be worth about five thousand chyen per flower or more. This will improve the economy as players have more means of automated income and become able to buy more gear.
We should make flowers not only be growable with a special flower growing kit (or a greenhouse like in Stardew Valley? We should make another thread to discuss this tbh), let's also introduce the concept of badlands scavenging, after all the badlands is a vast natural space, and it would give players more things to do if you can search flowers there using your forensic skills. So you could go out, seek some flowers, and bring them back to Withmore to be sold. Really nobody bothers to smuggle guns and explosives into the city but this could change the whole landscape and introduce a new dimension of roleplay opportunities outside of the city, a largely underutilized area of the game.
I really hope this gets added into the game, as it would make my Cyberpunk Roleplaying experience elevated tenfold, and I would be really immersed in all the awesome Cyberpunk Roleplay coming from it.