A larger tree with say a 15 ft. canopy would need close to 180 gallons each week in July. A guess as to why your ash leaves are falling is ash anthracnose, a fungal disease that afflicts ash and other trees in cool, damp, spring weather. Ash trees across the state are dying at an alarming rate, with little sign of the infestation slowing down. These include cankering, mildews and various fungal infections, leaf scorch, rust diseases, and pests such as mites, webworms, carpenter worms, and borers. An ash tree that has a canopy diameter of about 8 feet would need more than 50 gallons each time its watered. Cracks on Trunks. Unlike the branches of healthy trees, a dying tree's branches lack elasticity and do not bend. Signs of decay like the growth of mushrooms or fungi on the surface of the tree are a telltale sign that the tree is dying. The aforementioned symptoms include: ash trees with dead and dying branches; affected trees had some new foliage trying to emerge from buds lower on the branches, but this new foliage was greatly reduced in size and never attained the size of normal ash tree … A dying tree … It is located on a southern exposure and planted in a rock mulch. Arizona ash trees, like many other plants, are susceptible to various pests and diseases. My Ash Tree is Dying - Any Ideas on how to save it? Signs of Decay. Is the tree … Trees often decay from the center towards its outer surface. A major disease problem facing ash tree growers is ash yellows, a disease cause by a microorganism called phytoplasma. I noticed that the bark near the bottom of the tree … It is … Q. I have a 23-year-old ash on a drip system with 10, five gallon per hour emitters watered twice per week for 30 minutes. A healthy ash tree adds 6 to 8 … It has a drip system. The tree has begun to lose leaves and limbs are dying. It has been very healthy until this year. Thu Jun 07, 2012 2:16 pm. Ash trees … I have a Mountain Ash that is about 10 years old. The earliest symptoms are diminished new growth. It results in leaf drop and the leaves will typically have brown …