This game is really pretty-looking and super polished! I wasn't quite sure about the title page image being at all attractive, as a gray mass looking at a brown logo isn't particularly thrilling. It was seeing the quality polished screenshots of the gameplay made me change my mind to play it. I think a change might attract more players.
I have similar critique as the others. I got bored by about the 4th puzzle as it was starting to feel repetitive, but I kept going up to puzzle 6. They're not bad puzzle ideas persay, as they might prove more helpful for younger players that might not be able to advance to higher ones? Or introduce new mechanics sooner.
This is my UI critique, but I might just be dumb. Perhaps being primed by other games, but usually when I'm missing an "item" I need to get, it's usually brightly lit, and the item/flower that I already have, turns dark so I know I already completed that particular one. I think it's an easier visual match of "what I need - brightly lit" matching the flower on grid is how my brain interpreted it initially. While it being "dark" I had to spend more time staring at the dark image and "guess" which one it is. It took more brainwork to process versus it being a quick visual match. I hope that makes sense! I'm not sure if you want to flip it and see if it processes better for other players (you'll have to watch them playtest it) but I definitely messed up for a while on the early easy puzzle as a result. Or having another indicator that I already got that flower with a green checkmark or something.
This one would be a bit of a doozy being a biology major, but... moles do not eat flowers LOL ^^; Gophers and voles do. Perhaps you could consider a color switch or a future mechanic for more enemies (or friends) as something to make it more scientifically correct. Moles are carnivores and can damage plants indirectly by lifting and damaging roots... maybe can drop invertebrates to attract moles to a certain spot to clear plants, move way from plants, or block smaller enemies (voles) can be future potential ideas to consider.