For over 20 years, through lots of research--have been using Shredded Cedar Mulch (there are some chunks in the shreds). All the sudden this season, our Home Depot is selling "Cedar Blend" instead of the 100% cedar. It says something like 'wood from the forest and other wood' on the bag. We didn't buy because I know how picky my roses can be. Has anyone used the blend?? Also I removed the collars from the roses several weeks ago and raked all the old mulch away & trimmed dead off. It's been in the 40s mostly, some 50s in Milwaukee, WI. Very chilly Spring. Rose are starting to leaf out, some bushes a little more than others. Don't know if their slower cuz of the chillier Spring? So, actually two questions, about the mulch & about the slow growing. Thanks!