I am getting 5 or 6 larger 15ft spruce trees in my yard my concern is the truck will drive over my buried flex lines for my outdoor wood boiler, should I be concern or am I worrying about nothing
Since they should be at least a couple of feet deep, wrapped in some type of insulation, probably in a corrugated tube sheath, and PEX is somewhat pliable I think you're worrying about nothing. Disregard the above if you've got hard lines buried a couple of inches deep with no insulation and it's a BIG truck...