One of the best flash games I've ever played.

[Chrono Crow]

http://www.smart-kit.com/games/sprout/

Not hard to understand at all. Some of the puzzles are a bit irritating, but you don't feel cheated when you figure them out.

Also, the art's very cozy.

[James]

It's obviously made with love, but I found the gameplay itself pretty annoying, and the animation kind of jarring. Still, better than a lot of the crap out there.

[PonderThis]

I really enjoyed it, and have to disagree with James' assessment. I didn't find the gameplay all that annoying, any more than any other puzzle style game. And I thought the animation was really fun. It didn't seem "jarring" to me at all; perhaps it's just a style issue.

Anyway, I liked it a lot.

[James]

Well the actual animation had very few frames-per-second, which I don't like much in the first place, which is then combined with smooth motion, which seems mismatched and awkward. To me, anyway.

[PonderThis]

The same guy apparently also made this one. It does have a very similar feel to it.