Why Are My Pears Cracking at the Skin?

Cracked pear skins — splits running across or along the fruit surface, sometimes opening deeply into the flesh — are nearly always a water management problem rather than a disease. The crack pattern and timing within the season will confirm this and point you toward the solution. Cracked fruit is not safe to store and should be used or pressed immediately.

Irregular water supply — the main cause

Pear skin cracking is almost always caused by inconsistent moisture reaching the developing fruit. During a dry period, the fruit grows slowly and the skin toughens slightly. When heavy rain or irrigation follows, water is absorbed rapidly through the roots, the fruit flesh expands quickly, and the relatively rigid skin splits along its weakest lines. This is most damaging in the four to six weeks before harvest when pears are approaching full size and skin is under tension. Maintaining consistent soil moisture throughout the season — rather than allowing soil to dry out then soaking it — is the most effective preventative measure.

Mulching to regulate soil moisture

A thick organic mulch (compost, well-rotted manure or wood chip) applied around the root zone in late spring dramatically reduces the fluctuation in soil moisture that triggers cracking. Mulch slows evaporation during dry spells so the soil stays moister for longer, and it also slows the penetration of sudden heavy rain so moisture enters the soil more gradually. Keep mulch away from the trunk to prevent collar rot. Aim for a layer 8–10 cm thick, renewed annually.

Calcium deficiency

Calcium is a key component of cell walls and plays an important role in fruit skin integrity. Calcium-deficient trees produce fruit with thinner, less elastic skins that are more prone to cracking. Calcium uptake is impeded in very dry soils even when calcium is present — another reason why consistent moisture matters. Apply calcium foliar sprays (calcium chloride or calcium nitrate) from fruitlet set through to a month before harvest if deficiency is suspected or if cracking is a recurring problem year on year.

Harvesting at the right time

Overripe pears on the tree are significantly more prone to skin cracking than those picked at the correct stage of maturity. As a pear ripens past its optimum point, the flesh softens and internal pressure increases. Any moisture fluctuation in this state causes splitting very easily. Monitor fruit carefully in the weeks before expected harvest and pick promptly when the fruit lifts freely from the spur with a gentle upward twist.