We‘ve Lived in our house for 7 years, the people we bought it from were very in to gardening and it’s been a bit of a challenge to maintain everything. We have numerous pine trees at the front of the property for privacy, but Last summer i started noticing a few were really dropping their needles, but this year it’s really bad and instead of a few it’s 12 of them. Can anyone offer suggestions as to what the problem is? I believe there is no saving them, but don’t want to replace them and run in to the same issues. imwould guess the trees are around 15 years old.