Why does your Acer have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyMaples have relatively shallow root systems and are highly sensitive to moisture deficits. When the soil dries out too much, the tree enters survival mode by shedding leaves to reduce transpiration.
Excessive moisture or poor drainage causes fungal pathogens to attack the root system. This prevents the tree from transporting water to the canopy, resulting in sudden wilting and leaf drop.
This soil-borne fungus enters through the roots and plugs the tree's vascular system (xylem). This causes sudden wilting and leaf drop, often starting on one side of the crown or specific branches.
Extreme fluctuations, such as a late spring frost or an unseasonably warm period followed by a freeze, can cause maples to abort leaves. This is common in young Acer specimens not yet acclimated.
Your plant might also be experiencing one of these issues:
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