One of my potato towers/"silos" looks like this, and I'm not adding any more mulch. Just keeping it watered:
[img]https://i290.photobucket.com/albums/ll272/applesbucket/Image7002.jpg[/img]
As you can see, it's starting to flower, which some one has said is when you should stop hilling (it might have been jal... or maybe jbest.... I'm sorry I can't remember...
