Hydro Weed Grow just released new updates with its incorporation of both a new spherical maze game and Free 3 in 1 "420 Art" mobile wall paper bundle. New animated menus, textures, objects and options are now standard and through out this interestingly cool application something.
Google Play Updates and what's new
Here is a Tutorial video you might find useful.
Found this fundamentals walk through of level one before the upgrade. There should be a side by side done so gamers can see how far this title has come.