Spruce Trees and Mulch
I've got 20 spruce trees on my lot, mostly out on the edges acting as a screen. They are roughly 20 feet tall, +/- 2 feet.
They all have their lower branches. Due to how they grew, the lower branches range from 6 inches to 24 inches above the ground. This has allowed some grass and weeds to grow under the edges and further in are some tougher weeds like deadly nightshade vines and prickly lettuce.
I've cleaned the vines out but would like to lessen the amount of weeds that seem to grow underneath AND make it so the mower/weed eater is not needed the first 12 inches or so underneath.
I've read I can mulch the spruces, about 2-3" inches deep max.
I'm thinking though it may look weird to have these trees, some of which are not next to one another but spread out more, with a perfect circle of mulch under each tree. I'd take the mulch out to the edge, which for their height is about 14-15' diameter.
Any design ideas on this? I don't want the lawn to look like it has brown polka dots but would like to lessen the weeds and scruff around the bottom edges.