Pinion Tree Is Dropping Needles And Has Saw Dust Like Powder Along Branches

Question From: L. Williams - Albuquerque, New Mexico, United States
Q: I have a pinion tree in my yard that has been dropping needles and has a 'saw dust' type sprinkling along its branches. I've sprayed some basic insect yard killer on it since it began 3 weeks ago, but I'm not sure if the problem and pests are gone

A: Les, If it were my tree I would have an onsite check from a certified arborist. If the pest bored into the tree spraying it will probably be a waste of time. A systemic will take weeks to work. Arborists use direct injectection systems that work quickly. You are putting your tree at risk by self medicating. Call a doctor. To find a professional in your area go to and enter your zip code. Good Luck and Happy Yardening, Nancy