Hmm, quite the short and sweet Metroid-ish adventure with an interesting planting hook! While the game does start out pretty good with a nice little cinematic and overall decent graphics/animation and platforming, it didn't exactly grab me at the start: while the planting was rather unique, it was a bit tedious to have to grow every one of my shots and I was a bit worried at how the game would proceed. However, bit by bit the game introduced new interesting powerups like the bubble plant (with its cool double use through holding it for jump powers or throwing it to create a jump pad) and I loved how it kept looping back to the start and making you realize what new path just opened up with your abilities. In that way the game was very addictive: I always wanted to see what new plant would be nice and what new obstacles and paths would open up with it, and before you know it I made it through to the end!
However, it can be an incredibly frustrating game at times due to its overly punishing nature. Every missed throw with a plant was made all the more worse by the fact that I would need to replant it and wait for the entire animation and growing to take place (you'd think that the plant would remain and regrow the fruit over and over instead of needing to replant the entire thing), and every time I took damage when holding a plant was made doubly worse since it makes me immediately drop the plant (which again necessitates backtracking and waiting for the regrow animation to play out, or if you're in the dark area and you lose your light plant, you may as well just kill yourself, argh!) The game also loved to have a lot of overly difficult jumps that either require pixel-perfect edge jumps or the unintuitive use of a short jump to avoid hitting the ceiling which actually can make your jump travel less. The checkpoints were never too punishing, but when combined with all this other stuff, it sure didn't help that much.
There were also some other frustrations with the game like how unclear the controls are. For example, I had no idea I could jump down thin floors since the game allowed me to use the up arrow to jump, which made me reluctant to jump down since you can't press up+down at the same time: only once I realized that you could jump down by using x+down or space+down did it work. Furthermore I had no idea what those glowy spots were and how to interact with them: would've been nice if the key to press would appear above your head when you're over a glowy spot to let you know what to do, perhaps. There are also weird design choices like how you can get a green seed, die without saving, and when you respawn you'll still have it: forgiving, but kind of kills the point of collecting them, I feel. Oh, and it stinks that the game doesn't have a save/load feature (despite it saving in-game), requiring that you beat it all in one sitting.
There definitely were a lot of little annoyances with the game that made a pretty bad first impression and almost made me quit, but I feel the game did enough right to deliver a short and sweet experience, so well done in that regard! My only big disappointment was that I would've loved if there was one more final area which was a bit more puzzle-y and requiring using all of the plant types: it felt like the levels only used whatever plant was just introduced and completely disregarded all of the other types, and in that way it felt like all of the levels were just tutorials on each plant and it never did a final exam, so to speak!