Why are my pine trees turning brown? - Christmas Trees
Knowing which species of pine you have and the time of year you first see symptoms can help you identify the problem.
Phytophthora Root Rot of Christmas Trees – Wisconsin Horticulture
How Charlie Brown killed the aluminum Christmas tree
The Benefits Of A Living Christmas Tree
Steps to Take When Your Evergreen Turns Brown - Keil Tree Experts, Inc.
Pocket Guide to Christmas Tree Diseases
Pine Tree Diseases and How to Treat Them
Why Your Evergreen Tree Might be Dying From Bottom-Up
Why is my evergreen turning brown and losing needles? - Gardening at USask - College of Agriculture and Bioresources
How to Make a Real Christmas Tree Last Longer
Why Inner Conifer Needles Turn Yellow or Brown in Fall: An Evergreen Anomaly – Garden Betty
Why is my evergreen turning brown and losing needles? - Gardening at USask - College of Agriculture and Bioresources
Christmas Tree is Dying: Quick Solutions to Revive It - Creative Homemaking
