I love the fun, wacky setting, and how you incorporate sunflower into the theme.
At first glance, I liked your mechanics that uses cards instead of dice. However, when I read through it properly, I found it a bit too fiddly and confusing. I know it is difficult cramming detailed mechanics into 200 words, but perhaps you should aim for something simpler?
I was also confused because it took me a while to figure out the bugs are enemies. I thought they are like pollinators or something, and was shocked to read the flowers fight them to the death!