Yeah, check your holes. lol. no really I just watch mine when I water to see if they are draining as much as I water them. If you're soil retains alot of water it doesn't matter how often (or not often) you water it will still be too moist. Get rid of the wood chips, buy some perlite or building sand (NOT BEACH SAND IT HAS TOO MUCH BUILT UP SALT CONTENT).