• Archangel Ancient Tree Archive is a 30-year-old Oregon nonprofit run by a father and son team, David and Jared Milarch. Together with a team of biologists and climbers, they have spent the past two decades assembling a “living library” of the world’s most important old growth trees, cloning hundreds of different species along the way. Read more
  • For a newly planted street tree, adequate watering during establishment is quite literally a matter of life and death. Some, if not most, trees may require 15 to 20 gallons per week for the first 2 to 3 years after planting. Slow watering prevents runoff and penetrates into the soil encouraging root re-growth, but it takes time. Without an automatic irrigation system, what’s the best method to water a sidewalk tree? Select this link to compare watering strategies from the DeepRoot Blog.
  • Trees are naturally engineered to withstand normal weather conditions, and most urban trees can survive a storm. But some storms exert extreme forces that can result in tree injuries and even tree loss. Lindsey Purcell, Urban Forestry Specialist at Purdue University, has written a publication for Purdue Extension, “Trees & Storms,” suggesting that the response to tree damage following violent storms should be based on two concepts: risk and sustainability. Follow this link to read his guidelines for responding to specific tree damage following violent storms.