would it be possible to:

Make Cactus Placable
Worth $0.3
But not break when placed beside a block?

This would let us us cacti for various reasons, but not allow auto farming, as thats how auto cacti farming works. Just an idea ;] I hope its possible, and the cacti price can be addjusted, but no point since it cant be made auto. And i know cacti was banned because it caused lag because of all the auto farming.

 

Weather was a minecraft thing, and andy disabled it ;] so i bet its possible.