Astarra, sweet potatoes are ready when the leaves start to turn yellow. If anyone is still having trouble with snails and slugs you can make a vegemite trap. Much like a beer trap only you use vegemite mixed with water place in an old jar and bury it so the top is level with the dirt. No need to waste good beer .
Artichokes, best used as a wind break in veggie garden. Causes wind everywhere else. LOL