[2021] Greenhouses... can we make one?

Greenhouses are not currently planned, but could be back on the table when we work on the farming revamp.

Because game development is never easy and it's not currently the turn for work on farming - plus Greenhouses simply not being planned currently. Your idea is nice, but if we introduce it, it would be more sophisticated than that to make it realistic.

Overcrowding does not have an effect on plants you planted yourself.

There is no need for disagreement: Overcrowding does NOT affect player-planted plants AT ALL. It was disabled a few updates ago and is only valid for natural spawned plants now.