Apr 22, A number of pests may also be responsible for lemon tree leaf drop. Asian citrus psyllid produces honeydew, which leads to sooty mold as well as causing damage and leaf drop due to the feeding on of the young citrus leaves.
Oil sprays can control this pest when applied frequently. Citrus leaf miners are also an intrepid pest assailing lemon tree leaves.
Barely noticeable to the naked eye, leaf. Lemon trees are moisture sensitive and will drop leaves when over- or under-watered. Initially, leaves on drought-stressed trees curl and turn dry. Leaves on over-watered trees flatten and droop. To establish young trees, water thoroughly three times the first week.
Jan 14, Therefore, in an effort to maintain a balance between the leaves and the roots, the tree drops it's leaves. What you need to do, is either raise the temperature of the soil, or move the tree out of the direct rays of the sun. Don't feel to badly, as this is a very common problem to new citrus owners.