Fig Tree (Ficus carica)

The fig tree is one of humanity's oldest cultivated plants, with records of its use stretching back thousands of years. Despite this ancient heritage, it remains highly sought after by modern gardeners for its striking appearance, delicious fruit, and surprising adaptability.

Appearance

Fig trees are immediately recognisable by their large, deeply lobed leaves with a rough, textured surface on top and a softer, slightly downy underside. The bark is smooth and silver-grey, giving the tree a sculptural quality even in winter when bare. Trees can range from compact, multi-stemmed shrubs to spreading specimens reaching several metres in height.

The Fruit

What we commonly call the 'fruit' is technically an inverted flower structure known as a syconium — a hollow receptacle lined with hundreds of tiny flowers that bloom inward. When ripe, the flavour is intensely sweet with a jam-like, honeyed quality and a gentle crunch from the small seeds inside.

Varieties

There is a wide range of varieties suited to different climates and uses:

• 'Brown Turkey' — one of the most reliable for cooler climates, producing brownish-purple fruit
• 'Violette de Bordeaux' — small, very sweet, dark fruit
• 'Adriatic' — pale green skin with a bright pink interior
• 'White Marseilles' — pale, translucent skin with a mild, sweet flavour
• 'Chicago Hardy' — bred for cold-climate resilience

Character

Fig trees are vigorous growers that, given too much root space, will prioritise leafy growth over fruiting. Root restriction is the key to abundant harvests. They are long-lived, slow to establish, but rewarding once productive.

How To Grow

How to Grow Fig Trees

Propagation

Fig trees are almost always propagated from hardwood cuttings taken in late winter or early spring, rather than grown from seed. Take 20–30 cm sections of healthy, pencil-thick stems, insert them into pots of gritty compost, and keep them in a frost-free environment until rooted. Young potted plants or bare-root specimens are also widely available from nurseries.

Root Restriction — The Key to Fruiting

Fig trees are naturally vigorous. In open ground with unlimited root run, they channel energy into producing large leaves and long shoots rather than fruit. To encourage fruiting, root restriction is essential:

• In a container: Use a large pot (minimum 40–50 cm diameter). This is the easiest and most reliable method, especially in cooler climates.
• In the ground: Dig a planting pit approximately 60 cm square and 60 cm deep. Line the sides with paving slabs or bricks and place a 15 cm layer of rubble at the base. This creates a root-confining box that limits spread without cutting off water.

Soil and Position

• Soil: Well-drained, moderately fertile soil with a slightly alkaline to neutral pH (6.0–7.5). Enrich with grit if drainage is poor.
• Position: Full sun is essential. Planting against a warm wall maximises heat absorption and helps ripen fruit in cooler conditions.

Watering and Feeding

• Water consistently during the growing season, especially while fruit is swelling. Irregular watering can cause fruit drop.
• In spring, apply a balanced slow-release fertiliser.
• Once small figs are visible, switch to a high-potassium liquid feed (such as tomato fertiliser) every two weeks until the fruit begins to colour.

Pruning

• Early spring: Remove dead, damaged, or crossing branches. Cut one or two older stems back to the base to stimulate fresh growth.
• Early summer: Pinch out the tips of new shoots once they carry 5–6 leaves. This redirects energy into developing fruit rather than extending shoots.
• Important: Never remove the small, pea-sized embryo figs at shoot tips — these are next season's crop.

Overwintering

In cooler climates, the tiny embryo figs forming at shoot tips in late summer are next year's harvest and must be protected from hard frost:

• In containers: Move pots into a frost-free shed, garage, or unheated greenhouse during dormancy. Light is not needed while the tree is leafless.
• In the ground: Wrap branches loosely with horticultural fleece or straw when frost threatens.
• Autumn tip: In late autumn, remove any large unripe figs that have not ripened — they will not survive winter and will rot on the branch. Only retain the tiny pea-sized fruitlets at shoot tips.

Harvesting

Harvesting Figs

Figs are unusual among fruits in that they do not continue to ripen after picking. Timing is critical — harvest too early and the fruit will be bland and milky; wait too long and they may split, ferment, or be taken by birds.

Signs of Ripeness

Look for these three reliable indicators before picking:

1. The droop: A ripe fig hangs heavily downward from its stem rather than pointing outward. This softening of the neck is one of the clearest signs of maturity.
2. Colour change: The fruit transitions from bright, hard green to its mature colour — deep purple, brownish-bronze, or pale greenish-yellow depending on variety.
3. Texture: Gently squeeze the fruit. A ripe fig should feel as soft as a ripe peach. Firmness means it needs more time.

Sugar Tears

In ideal ripening conditions, a perfectly ripe fig will sometimes produce a small drop of syrupy nectar from the eye (the small opening at the base of the fruit). This is a sign the fig is at peak sweetness.

Picking Technique

Figs bruise easily and should be handled with care:

• Lift and snap: Rather than pulling downward, lift the fruit upward against the direction it is hanging. It should detach cleanly at the stem.
• Wear gloves: The milky white sap (latex) produced by the tree can irritate sensitive skin. Wearing gloves and long sleeves is advisable when harvesting.
• Check the stem: If white sap runs from the broken stem, the fig was not fully ripe.

Storage and Preservation

Figs have a very short shelf life once picked:

• Immediate: Eat fresh off the tree for the best flavour and texture.
• Short-term: Store in a single layer in the refrigerator and consume within 2–3 days.
• Longer-term: Figs freeze well — either whole or sliced — and can be dried at a low oven temperature or dehydrated. They also make excellent jams, chutneys, and preserves.

Protecting the Harvest

Birds are adept at spotting ripening figs before the gardener does. If the fruit is beginning to colour, consider draping bird netting over the tree or placing individual drawstring bags over promising fruits to protect your crop.

Common Problems

Common Problems with Fig Trees

Fig Rust (Cerotelium fici)

Fig rust is a fungal disease that causes yellow-orange spots on the upper surface of leaves, with rust-coloured pustules on the undersides. Severely affected leaves drop prematurely, weakening the tree. Improve air circulation by pruning, avoid overhead watering, and remove and dispose of fallen leaves. Fungicide treatments can help in severe cases.

Coral Spot (Nectria cinnabarina)

Small, coral-pink pustules appear on dead or dying wood. This fungus typically enters through wounds or frost-damaged tissue. Prune affected wood back to healthy growth and sterilise tools between cuts. Avoid leaving stubs when pruning.

Fig Mosaic Virus

Symptoms include mosaic-like yellow and green mottling on leaves, distorted growth, and reduced fruiting. There is no cure — infected plants should be removed and destroyed. Purchase virus-free stock from reputable nurseries and control sap-sucking insects that may spread the virus.

Botrytis (Grey Mould)

In wet, humid conditions, botrytis can affect ripening fruit and damaged stems, appearing as a grey, fuzzy mould. Ensure good airflow around the tree, remove damaged or overripe fruit promptly, and avoid wetting foliage when watering.

Fruit Drop

Small, immature figs dropping from the tree in summer is usually caused by inconsistent watering, especially during periods of fruit swell. Maintain steady soil moisture during the growing season and mulch around the base to retain moisture.

Poor Fruiting

The most common cause of a fig tree producing no fruit is excessive root space. If the tree is growing vigorously with lush foliage but no fruit, implement root restriction (see How to Grow). Insufficient sunlight and heavy pruning of fruiting shoots are also frequent causes.

Winter Damage to Embryo Figs

The small, pea-sized fruitlets that form at shoot tips in late summer are next year's crop and are vulnerable to hard frost. Protect them with fleece or by moving container-grown trees under cover during cold periods.

Scale Insects

Brown or white waxy bumps on stems and leaves indicate scale insects, which weaken the tree by feeding on sap. Treat with a horticultural oil or insecticidal soap, or scrape off colonies manually. Encourage natural predators such as parasitic wasps.