I dont do mulch installation. I have always spun the mulch off too my best friend that does a good bit if mulch installation. I dont have time because I am not full time but I am a LEGIT tax paying, insurance carrying company. My wife and I just remodeled my grandfathers home and I am going to lay out and measure my beds. How do I figure how much mulch I will need? Just regular ole black mulch. My buddy is still at the lake and cellphones dont work worth a crap at his place and a bulldozer cut his land line at his lake house this weekend doing some work for his neighbor. So I cant get a hold of him today. I am just trying to get a material price together today and decide on stones and plants. Thanks for yalls input. I did a search and came up with a thread I read someone wrote 300 sq ft of bed = mulch 4 inches thick they would allow 3.5 yds. So thats about 1 yard per 85 sq ft I believe.