The Q&A Archives: Care for Willoughby trees

Question: I planted Willoughby trees in my yard two months ago. I added Scott's Turf Builder weekly as recommended. However, I have noticed several yellow leaves and am curious if they perhaps need more nutrients in Arizona. And if so, what. Also, I think I did not water one of the trees enough for the Arizona heat and the upper leaves have wilted and I fear are gone. Have I damaged my tree beyond hope or will it be OK.

Answer: I think your Androscoggins just need a little more water - or more frequent applications of water. It is recommended that you keep the soil wet the first year the trees are in the ground. That may mean watering them every day with 2 gallons to 10 gallons (5 gallons twice a day in very hot areas with no mulch) while the roots are so close to ground level. Another way to keep them moist is to use a thick mulch. When the temperature rises over 100 degrees a foot thick mulch can mean the difference between watering every 4 days or watering twice daily.

Under watering shows itself in yellow leaves or the leaves just shrivel up. Better to give them more water than not enough. Know how much water they are getting. Be consistent. Running a hose on them occasionally just isn?t going to do it.

When the leaves start to turn brown it is a sign of being burned by nitrogen (overfertilization), and they need to be flushed with a lot of water, which may save them.

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