Q: I'm putting cardboard and chipped wood over much of my backyard to keep the weeds down. How much room should I leave free of cardboard around the trees (one planted only a year ago) so they get enough water (whether mine or rain)? Would it be OK/better to put the chipped wood around the trees but no cardboard? how close to the trunk should I get if I do that?
Most “sick tree” problems can be traced back to underlying stresses that have reduced the tree's vigor, making it more vulnerable to diseases or insect pests.
Your trees may still need attention even in the coldest days of winter.
A guide for how to collect and where to get a sample analyzed for plant diseases.