I put new mulch on all the beds this year. Shredded bark, not too fine but not the big chunks either. We have had a lot of rain (Wisconsin) over the last week and a half plus humidity. In the shady spots the mulch is molding. I spread it about 2 to 2-1/2" thick. I raked through it to loosen it up so more air can get in. My question is, is there anything else I should do? Once things dry up I'm sure it will be fine but until then I don't want any of the plants (Hostas mostly) to get diseased. Thanks!