Posts by Wei Zhang

Municipalities impose water restrictions during droughts and when water is in shortage. The most commonly restricted areas is landscape irrigation. While lawns can be restored within weeks, it take decades for trees to grow to their mature size, when the benefits of trees are at the maximum. Water restrictions disrupt the growth of the trees and…

Free Webinar on April 30th, 2026, 12:00-1:30 PM (EDT) Among some of the common questions regarding urban trees: Why can’t we save all the rain during the winter months for the trees during the summer droughts? Why most trees do not have deep roots? Why compacted soils are bad for your landscape? Why do trees…

Newly planted trees need 2-5 years of watering to grow back the lost roots during the transplanting process for farm-grown trees. Container-grown trees need similar time to be weaned from the irrigation system. Different watering methods can be used. But all methods will have to deal with the reality: Plant Available Water (PAW) as the…

Sodium Chloride, the most predominant salt used on streets for melting snow and ice, is the lubricant of the modern lifestyle in northern climates during wintry weather conditions. These same streets and parking lots are also the battleground where urban foresters strive to build green infrastructure for canopy coverage, stormwater management and aesthetics. It is…