Why does Pistacia weinmannifolia keep dropping its leaves?

Pistacia weinmannifolia is a sun-loving tree, but it is also slightly tolerant of shade. It likes warmth, requires deep soil layers, has strong sprouting ability, grows slowly, and has a long lifespan. However, seedlings are not very cold-hardy and need protection in North China. The plant can withstand low temperatures of -10°C and prefers soil with ample sunlight and no water accumulation. Why does Pistacia weinmannifolia keep dropping its leaves? Many people are puzzled by this question, but there are mainly the following reasons.

Leaf drop caused by over-fertilizing

Pistacia weinmannifolia is quite sensitive to fertilizer. For seedlings, apply as little fertilizer as possible or even none at all, to avoid burning the seedlings or causing leggy growth due to excessive fertility. For cutting propagation, cuttings can be taken in both spring and autumn. Using plant non-test-tube rapid propagation technology, it can be done year-round: during the growing season, use one leaf and one bud; during the dormant period, take a single branch section. During the tree's dormant period, select 1-year-old healthy branches from a vigorous mother tree.

Leaf drop caused by over-watering

Pistacia weinmannifolia likes dry conditions, and watering once is difficult. When watering, stick to the principle of not watering until the soil is dry, and when you do water, water thoroughly. Do not keep it wet and waterlogged for long periods or let water sit in the tray for a long time!! Even more, do not water only the surface layer; you must water thoroughly! Generally speaking, watering for more than 10 seconds up to a few minutes (depending on pot size and soil type) until water drains from the bottom is sufficient.

Leaf drop caused by lighting and ventilation

This condition easily occurs when there is a long-term lack of light. Poor ventilation can also cause Pistacia weinmannifolia to drop leaves, so good ventilation conditions should be maintained.