Why Is My Fig Tree Dropping All Its Leaves?

A fig tree that drops all its leaves in autumn is doing exactly what it should — figs are deciduous and need winter dormancy. But if leaves are falling in spring, summer or early autumn without warning, this is a stress response. The fig is shedding leaf area to conserve resources in the face of some serious threat. Identifying the timing and the condition of the fallen leaves is the first step to understanding what has gone wrong.

Normal autumn dormancy

In the UK and northern Europe, fig trees naturally drop all their leaves between October and November as they enter winter dormancy. This is completely normal, and the bare branches will produce fresh new leaves the following spring from late April or May. No action is needed — in fact, this dormancy period is important for the tree's long-term health and for fruit development the following year.

Drought stress in summer

The most common cause of sudden out-of-season leaf drop is severe drought stress. When a fig tree — particularly one in a container or in free-draining sandy soil — runs out of water during a hot spell, it may drop its leaves almost overnight as a survival mechanism to stop further water loss. The leaves will often still be green when they fall, or they may yellow very rapidly first. Deep, consistent watering through dry periods prevents this. If it has already happened, water deeply and keep the root zone consistently moist while the tree recovers.

Waterlogging

Paradoxically, too much water causes similar symptoms to too little. Roots in waterlogged, airless soil begin to die, and the tree sheds leaves because its damaged root system can no longer support the full canopy. Check the drainage around the tree. If water pools at the surface for more than an hour after rain, or the soil smells sour, waterlogging is likely the cause.

Cold and frost damage

A sudden late frost after the leaves have fully opened in spring will cause the leaves to blacken and fall. New growth may resprout from the dormant buds lower down the shoots over the following weeks. The tree usually recovers, but it will be set back for the season. Protect young or newly planted fig trees with fleece if late frosts are forecast after growth has started.

Root disturbance

Figs are sensitive to having their roots disturbed. Recent transplanting, deep cultivation around the root zone or damage from digging all cause sudden leaf drop. Keep cultivation shallow around fig trees, and after transplanting keep the tree very well watered and in a sheltered position while it re-establishes.

Sudden change in conditions

Moving a container fig from a sheltered greenhouse or warm conservatory into outdoor conditions too abruptly, or placing it in full sun when it has been acclimatised to shade, causes leaf shock and drop. Harden plants off gradually over one to two weeks before moving them to a more exposed position.