Why Are My Figs Sour and Tasteless?

Homegrown figs that are sour, bland or without the rich honeyed sweetness of a perfectly ripe fig are a disappointment, particularly after a season of careful tending. Poor flavour in figs is almost always the result of the fruit being harvested too early, grown in insufficient sun, or subjected to conditions that dilute sugar development. The good news is that the fixes are practical and mostly about positioning and timing rather than complex interventions.

Picked too early

This is the most common cause of sour, unpleasant figs. Figs do not continue to sweeten after they are picked the way some fruits do — a fig picked before it is fully ripe will remain under-ripe and acidic. The signs of a ready-to-pick fig are: the neck drooping so the fig hangs down rather than points upward; the skin taking on its final ripe colour (brown, purple or greenish-yellow depending on variety); the base feeling distinctly soft under gentle thumb pressure; and sometimes a small drop of nectar appearing at the eye at the base. Pick only when all of these signs are present.

Insufficient sunshine and warmth

Figs need prolonged sunshine to develop full sugar content. A tree in partial shade, or one in a cool, cloudy position, produces figs that develop their external appearance without ever accumulating the sugars that make them sweet. A south or southwest-facing wall in full sun, or a very warm sheltered south-facing border, is the minimum requirement for consistently sweet figs in the UK. Container figs can be moved to the warmest spot available during the ripening period in July through September.

Overwatering during ripening

Applying large amounts of water as figs approach ripeness dilutes the sugars in the developing fruit and reduces flavour. Once figs begin to show signs of ripening — softening at the base, colour change — reduce watering and allow the soil to become slightly drier than normal. This stresses the tree very mildly and concentrates the sugars in the fruit, producing a noticeably sweeter result.

Too many fruits competing for resources

A tree carrying a large crop will spread its resources thinly across all the developing figs, and none will reach the potential sweetness it would achieve with fewer competitors for the tree's photosynthates. Thinning the crop in early summer — removing the smallest or most crowded figs — results in fewer but sweeter fruit. Experienced fig growers often remove the second-crop figs entirely in August to concentrate all resources on the main crop.

Wrong variety

Some fig varieties produce fruit that is inherently less sweet than others, particularly varieties bred for warm Mediterranean climates that do not fully express their flavour potential in cooler conditions. Brown Turkey is reliable and reasonably sweet in UK conditions. Rouge de Bordeaux, White Marseille and Brunswick are also well-regarded for flavour in cooler climates. If you do not know your variety, consider replacing it with one of these.