Symptom: Yellow, wilting or curling
Yellow, wilting or curling leaves. This is a sign that your tree is dehydrated and needs water ASAP.
If the tree has been growing in the ground, place a garden hose directly at the base of the tree and let the water trickle over it for at least 1-2 hours. Watering a tree can be a daunting experience sometimes, so I bought this Drip Irrigation Water Rock. It might look ugly, but you can apply latex paint to it to change the color. In the meantime, it has a continuous water drip into the roots of the tree. If it’s a young freshly planted tree, continue to water it on a regular basis about once every 3 days (skipping on rainy days) until the growing season has ended.
It can also mean that there is a lack of nutrients in the soil. In this case, I recommend that you feed it some Miracle-Gro All Purpose Plant Food, 24-8-16. Follow the instructions when mixing this with water.