I like your concepts Daniel. Very cool.
Wondering what #28 might look like if you used a shade of green that is under the tomato for the word "greenhouse" and changed the green portion of the tomato stem so that it was more like the green stem in #28 or #20, which is more like a tomato stem.
I liked what you did to incorporate the various stages of growth in #27, but the round orange ball that they are wrapped around might not be so good. Maybe try and remove the orange ball so you just see the vines and tomatoes.