Exotické rostliny, Zdeněk Černoch, Větřkovice u Vítkova

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Fikovník

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Ficus L. – Moraceae

Wide Ficus family consists of more than 600 (according to many botanists over 1000) tropical and subtropical evergreen or deciduous shrubs, trees and lianas. Ficus plants are spread throughout the warm areas of entire world.


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Ficus carica L. (common fig) a Ficus family member usually cultivated as a fruit tree. It originates in Middle East and is nowadays cultivated in all subtropical climates throughout the world. Most of the trees and shrubs are growing wildly and are not cultivated. Fig is a deciduous tree or shrub, which can grow to 12-15m. It is usually cultivated on very limited areas and its crown shaped as airy, not very dense cone. Adriatic group is the only fig tree group that could be grown in our climates.

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Adriatic fig tree group shelters varieties with edible, partenocarpic fruit in summer and winter season. Fig cultivars are furthermore divided between those that can and those that can’t bare fruit in our climate.

 

 

Cultivars ideal for greenhouse or container culture in our climate (they should be protected indoors during the winter).

 

Fig fruit belongs to the most delicious subtropical fruit of all, it can be eaten either fresh or processed into jams, puddings, pasta…

The most common practice is preserving or drying the figs. It can be bought in this form (preserved or dried) even in our shops. It also happened to me on several occasions that I found fresh fruit in the hypermarkets (Tesco, Kaufland…)

Ripe fruit consists of water (82%), sugars (9-28%), proteins (1,4%), fat (0,26%) and mineral matter (0,5-1%). 100g of fresh fig pulp contains provitamin A (60- 90mg) and vitamin C (2mg). Dried fruit usually retains lots of nutrients too; it consists of water (18%), sugars (55-70%) and provitamin A, whereas the vitamin C is absent in dried figs.

Fig trees can be cultivated in the soil in the warmest areas of our country and only in greenhouses in the colder areas. Annual thinning of fig trees is necessary otherwise it will soon overgrow any designated area. They can withstand frosts down to –10°C without any significant damage, but prolonged exposure to lower temperatures destroys the wood and fig trees freeze down to the roots (roots should be mulched or otherwise protected). Plants frozen down to the soil usually grow back quickly in winter, but do not fruit in the same season. Therefore they can only be used as a decoration. Summer fruit usually grows on 1 year old wood and autumn fruit is usually formed on annual shoots. It is essential to remove enough shoots after the summer harvest in order to prepare it for winter. Several varieties were bred to withstand and survive temperatures down to -15 or -18°C. Probably the most frost hardy cultivar of all is 'Hardy Chicago' (it should be able to survive short exposures to -23°C). It’s therefore interesting, that this cultivar belongs to one of the least distributed and most difficult to find.

Growing fig trees outside in our climate: The most important first step is to choose a good spot (protected south walls…). Then you can proceed with digging the hole. It should be 1 or 1,5 meters deep and at least 150cm in diameter. The bottom of this hole should be filled with organic matter or nutrients. All the sides and edges of the hole are to be reinforced with a thin, yet stable wall made of rocks up to 50cm above the ground with several straps for winter protection.

Ideal cultivation shape of fig tree in our climate is small shrub or liana form, where all new annual shoots that come out of the profile should be removed. When the winter is about to come, cover the fig tree with folia, polycarbonate or natural covering (wood, hay…). It Fig is a deciduous tree that can overwinter well in dark areas and survive not seeing the sunlight for months. It is wise to remove the protection and check the plants after the snows melt down in the spring. Spring frosts should not pose a problem. The tree should start growing again at the end of the April and have decorative, large, firm leaves and next year’s crop by the end of May. This fig cultivation will ensure only one, but very rich harvest in summer. The second harvest will not come soon enough and the fruit will freeze in first autumn frosts. -5°C in autumn or early winter will help the plant to get dormant and the tree will stop its vegetation period. Then the protective construction should be put in place to once again winter over this tree.

 

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