|In april of this year we planted 3 liquid amber trees in our front yard. In the last 2 weeks we have noticed the leaves appear brown on the edges and some also are yellow,even scorched. The are covered by rock and sit in sandy soil. With the warm weather we increased the water(sprinklers) to run 10 minutes per day. Are they getting too much water or not enough? They are in the perimeter of our grass that does get fertilized but we are not certain if that is affecting them. How much water do they need since they are under rock? Also since the branches droop, is this a concern?|
|I think your trees are getting too much water. They haven't been in the ground long enough for the roots to become established so you should expect to see some stress through the rest of the season. But, overwatering is complicating matters. If possible, turn off the sprinklers nearest the trees. Your new trees need one inch of water per week. Since you have sandy soil you may want to water deeply every 4-5 days during hot weather, changing to once each week in spring and fall. The best way to water is to build a watering basin or water well directly beneath each tree. Remove the rocks from around the trees and make a watering ring. A water ring, sometimes called a water well, is a mound of compacted soil that is built around the circumference of a planting hole once a plant has been installed. The water ring helps to direct water to the outer edges of a planting hole, encouraging new roots to grow outward, in search of moisture. The height of the mound of soil will vary from a couple of inches. Your can then replace the rocks. When you water, fill the basin, allow it to drain, then fill it a second time. This should provide all the moisture your trees will need and will help them establish their roots and regain their health.|
Best wishes with your landscape!