Talk:Game Updates/@comment-24790838-20171110025410/@comment-5098300-20171110033606

And by "adjoining" they mean touching. Not "really close to" but TOUCHING. So upgrade the farms to the new 25-gems-each farm and then mash them together. Then alternate the types, maybe dragon root-pumpermelon-dragonroot with 3 touching so you have more of the shorter-growing type, or zazzberry-omega squash-zazzberry. I've unlocked cubetubers in one game doing that, but my gem stash is taking a hit with this upgrading.