powders of specific particle size, high productivity and versatile applications. By definition, âSpray drying is the transformation of feed from a fluid state into a dried. particulate form by spraying the feed into a hot drying medium.â (Masters, 1991) A spray dryer operates on convection mode.
Sometimes the grounds and maintenance department of a town or county creates mulch from trees that have been cut down and they make it available to the public. To lay a 4-inch-deep spread of bark mulch in a 300-square-foot area, a landscape or garden service will charge $425, which includes the material and labor. You can buy the mulch for $85 and do it yourself, and pocket a 80 percent saving.
I usually charge about $50 a yard to spread mulch. That doesn't include any weeding or edging. My runs are usually much longer than 100' so if it is that close to the truck I might charge a bit less. On a job over 15 yards or so I will usually do it for about 40-45 per yard depending on where the mulch has to go. I pay about $16 a yard for colored mulch and resell it for $25. So I would charge $75 per yard for mulch and installation.