Cabrahigo: characteristics, cultivation and uses in agriculture and biodiversity

  • The caprifig is essential for the pollination of female fig trees and the production of quality figs.
  • It maintains a unique symbiosis with the wasp Blastophaga psenes, essential for the fig tree's cycle.
  • There are numerous varieties adapted to different regions, with agronomic, ornamental and traditional uses.

Cabrahigo, characteristics, cultivation and uses

Introduction to Cabrahigo: origin, kinship and key role

El goatfig, also known as the male fig tree, is a fundamental variety within the universe of ficus caricaThis tree, of Asian origin and strongly linked to Mediterranean culture, has played an essential role throughout history in the pollination and production of the sweet and characteristic fruit of the fig tree: the fig. Its importance lies in the fact that, although its fruits are rarely edible, it acts as the male element in the reproduction process, allowing female varieties such as the Smyrna or Calimyrna fig to produce figs through a process known as goatification.

Its origins are in Asia Minor, but its presence has spread throughout the Mediterranean basin thanks to its adaptability and resilience to different soils and climates. Today, it remains a staple in both traditional agriculture and intensive fig cultivation.

Figs and brevas, differences and characteristics

Botanical characteristics of Cabrahigo (ficus carica)

The caprifig has a shrubby or small tree appearance, typically reaching between 6 and 8 meters in height, although it can reach over 10 meters in optimal conditions. Its crown is broad and low, with robust, spreading branches, often horizontal, which can become bent due to weight and the passage of time. The grayish bark is smooth and has stipple scars that encircle the entire branch, a very distinctive feature that differentiates it from other species such as the mulberry tree.

Its leaves are large, alternate, and deciduous, with a palmate-shaped blade and between 3 and 7 lobes, sometimes faintly marked. The color varies from dark green on the underside to a paler shade on the upper surface, and it feels rough to the touch. One of the most curious aspects of the caprifig is that its flowers are not visible, as they are protected within the fleshy receptacle that will become the fruit. These flowers can be male or female, although in the caprifig, male flowers predominate, producing a large amount of pollen.

Adaptability, habitat and natural distribution

The caprifig stands out for its fantastic adaptability to diverse environments. It can be found in both rural and wild areas, thriving in rocky terrain, well-drained soils, and sunny areas. It is commonly seen on slopes, walls, roadsides, and riverbeds, even in urban spaces such as church walls or old bridges. It prefers warm, dry, and sunny climates, although it tolerates a wide temperature range and altitudes of up to 1700 meters.

Due to its resistance and its ease of regrowth of stump and root, the caprifig can recover quickly after pruning, wounds or breakages. In fact, it is easy to propagate by cutting, layering or grafting in other specimens of the same species, which has facilitated its expansion both naturally and through human cultivation.

Reproductive cycle and phenology: generations of sychonia

One of the unique features of the caprifig is its production of three generations of syconia or fruits per annual cycle, each with different functions and related to the life cycle of the pollinating wasp (Blastophaga psenes):

  1. Breasts: Syconia formed on the previous year's branches, rounded in shape. They mature in early spring and serve as a refuge for the wasp during the winter.
  2. Prohigos: They develop in the axils of new leaves, are elongated and mature in early summer. They are the syconia used for goatification, since inside it contains the adult wasps that will pollinate the female figs.
  3. Suckers: They are born at the ends of the year's branches, during the summer. Their function is to continue the wasp's life cycle.

Symbiosis with the wasp Blastophaga psenes

The pollination of the caprifig and the reproduction of the fig tree are based on an extraordinary symbiotic relationship with the hymenoptera Blastophaga psenesThis tiny wasp is attracted by the scent of the syconium, entering through the operculum, or fig eye. Once inside, it lays its eggs on the short-styled female flowers and, at the same time, transports the pollen produced on the male flowers.

The energetic cost of this entry often results in the loss of wings and antennae, and the wasp dies inside the fig. However, before dying, it has managed to fertilize numerous flowers and perpetuate its cycle. The larvae develop inside the syconium, and after becoming adults, the fertilized females emerge laden with pollen, ready to repeat the process on other fruits, ensuring pollination vital for the production of edible figs.

Most relevant varieties and cultivars of caprifig

There are multiple varieties of caprifig adapted to different regions and purposes within the agricultural process. Among the most relevant and recognized are:

  • Abetroune
  • Amellal
  • Assafri
  • Bithri
  • Croisic (the only caprifig tree that produces edible figs)
  • Guerguenia
  • Hamma (from North Africa, parent of the Alma fig)
  • hemri
  • Jrani
  • San Joao Branco (originally from Portugal)
  • Tocal (originally from Andalusia)
  • From Perilla, Cojáyar and Morado (locals of Contraviesa)

Each variety has certain particularities, whether in the size and shape of the syconia, in the vigor of the tree or in its adaptation to specific soils and climatic conditions.

Brevas and figs: differences, cycle and commercial value

The caprifig and female fig trees can produce both brevas like figs, although this is rare in caprifigs. Figs are fruits that develop on the previous year's branches and ripen in early spring, while figs appear on new branches and ripen in summer or early autumn. It is a common misconception that figs are always purple and figs green; both can present a wide range of colors depending on the variety grown.

Figs usually have a larger size, aroma and juiciness, which makes them highly valued commercially, although they are less sweet than figs. Popular sayings reflect the importance of the fig in Mediterranean agricultural culture, where expressions such as “softer than a fig” o “that fig will not fall” illustrate traditional knowledge about this fruit.

The process of caprification: pollination of the Smyrna fig tree

La goatification It is an essential traditional technique for fig crops whose fruiting depends on the pollination of caprifigs. It consists of hanging mature caprifig syconia (mainly profigs) on female Smyrna fig trees, allowing wasps to transport the necessary pollen. Without this process, the figs would not ripen and would fall undeveloped.

This method is essential in regions where fig trees are grown to produce high-quality dried and fresh figs, such as the Sari Lop (Calimyrna) variety in Turkey and California, which cannot produce fruit without the intervention of the caprifig and the pollinating wasp.

Growing practices: optimal conditions for caprifig

The caprifig is cultivated both as a natural element in the Mediterranean landscape and as a supported crop on farms. For optimal growth, the following are essential:

  • Solar exposition: Requires full sun for good flowering and pollen production.
  • Floors: It prefers clay soils, rich in organic matter, but always well drained to avoid waterlogging.
  • Wind protection: Although it is hardy, some protection from strong winds is recommended to prevent damage to branches and fruit.

Light pruning is recommended to facilitate ventilation and remove weak branches, thus promoting the tree's vitality. Propagation by cuttings is simple and effective, making it easy to multiply specimens in nurseries and farms.

Nutritional properties and composition of the fig

The fruits of the fig tree, specifically figs and fig trees, have a remarkable nutritional profile. Their main component is carbohydrates (glucose, galactose, fructose), but they also provide essential amino acids, dietary fiber (pectin, hemicellulose, mucilage), minerals (potassium, phosphorus, magnesium, manganese, copper, calcium, selenium), and vitamins such as beta-carotene (provitamin A), vitamin C and niacin (B3). Figs also contain Flavonoids with antioxidant function (lutein, quercetin, rutin, violaxanthin).

The leaves and latex of the caprifig and fig trees contain furanocoumarins with photosensitizing properties and proteolytic enzymes such as ficin, which were traditionally used in milk coagulation.

Uses and applications of the caprifig and the fig tree

The caprifig and the fig tree have multiple uses both in gardening and in food and traditional medicine:

  • Ornamental tree: Its unique appearance and wide canopy make it a perfect choice for patios, parks, and gardens. Dwarf varieties are suitable for bonsai.
  • Edible plant: Female figs are eaten fresh, dried, or used in baking and traditional cooking. In the past, they were also used as animal feed.
  • Drinks: The fruit has been used to obtain brandy, vinegar and other fermented beverages.
  • Natural coagulant: The latex was used to curdle milk in the production of artisan cheeses.
  • Medicinal applications: Figs and leaves have been used as a digestive remedy, to treat skin irritations, and as mild laxatives, taking advantage of their richness in fiber and natural enzymes.

Collection, conservation and agronomic value

Figs should be harvested when the fruit is fully ripe, from spring (brevas) to late summer or early fall (figs). For dry storage, the figs are placed on wicker baskets exposed to the sun, turning them regularly to prevent mold and promote even drying. Once dehydrated, they are stored in cardboard or wooden boxes in dry, ventilated areas.

The agronomic value of the caprifig lies in its essential role in the production of commercial figs. Without the presence of male plants and their pollen, many varieties valued in the fruit industry would be unable to bear fruit, underscoring its importance in the sustainability and success of fig crops globally.

Cabrahigo and biodiversity: ecological and genetic importance

The caprifig plays a key ecological function By maintaining biodiversity in Mediterranean habitats, it provides shelter and food for numerous species of birds, insects, and microorganisms, promoting seed dispersal and the perpetuation of ecosystems associated with traditional crops.

Furthermore, its ability to survive adverse conditions, colonize marginal areas, and regrow after physical damage makes it a highly valuable genetic resource for the improvement and conservation of cultivated figs. The coexistence of wild caprifigs and domestic cultivars contributes to the resilience of agricultural systems and their adaptation to emerging pests and diseases.

The caprifig is, therefore, much more than a botanical curiosity; it represents the living memory of Mediterranean agriculture, the basis of pollination, and the guarantee of fruitful harvests. Understanding its characteristics, diversity, and uses is essential to preserving and enhancing a legacy that continues to bear fruit today and successfully responds to both agronomic demands and the challenges of ecological sustainability.

To graft a fig tree, the "whip and tongue graft" method is used.
Related article:
How to Graft a Fig Tree: Techniques, Tips, and Detailed Steps for Growing Exceptional Fig Varieties