Slightly Bigger Greenhouse (15 x 10) is a mod that adds 15 extra columns to your greenhouse. 

It can be applied to the original game. You will not need to download any other mods or maps.

The columns will be added to the existing greenhouse. You will not be able to enlarge your greenhouse beyond the original size.

Installation:

Download the file you want to install. You can find it in the Downloads section of the Android app. If you want to install the file to your device, go to the downloads section, tap the file you want to install and install it.