Silver fir

Silver fir

How to irrigate

Watering must first of all be adjusted on the basis of the age of the specimen; younger trees, in fact, have a greater need for water than adult ones, and fear drought much more. Another factor that must influence irrigation is the rainfall trend, since naturally the administration of water resources must be limited in case of abundant rains, especially in winter. It is recommended never to cause stagnation, which causes rot at the roots and, consequently, causes a general weakening of the plant. Thanks to drip irrigation it is possible to carefully monitor the quantity of water supplied, stopping the jet when it is considered appropriate; this system avoids moistening the leaves, directly wetting the soil on the surface or the roots.

Cultivation of silver fir

This tree, perfect for decorating parks and gardens, needs a soft, light and well-drained soil. A first plant must be carried out in a container containing universal soil with peat; after about two years, the plant can be transplanted into the ground. The multiplication occurs both by sowing and by semi-woody cutting, respectively during the spring and summer season. Pruning is essential to obtain perfect growth of the silver fir: when a fungal disease occurs, it is essential to immediately eliminate the affected branches to avoid irreparable damage to the specimen, and in the same way it is necessary to cut the parts as soon as possible woody trees damaged by other factors, including wind and parasites.

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How to fertilize

The silver fir must be fertilized annually, preferably in spring: it is advisable to bury a slow release granular fertilizer at the foot of the tree that can provide all the elements necessary for the development and sustenance of the specimen. The three main macro-elements are phosphorus, potassium and nitrogen; each of them plays an important role, as the first promotes the strengthening of roots and metabolism, the second stimulates the absorption of sugars and protein synthesis, the third supports the growth of tissues and vegetative parts. Precisely for this reason, nitrogen must never be present in the fertilizer in excessive quantities: otherwise, the tree would tend to weaken. Fertilization is essential for the health of the cultivated plant, and must be carried out regularly.

Silver Fir: Exposure, Diseases and Pests

The suggested exposure is sunny or partially shaded; in both cases the tree develops correctly. In addition, this plant can stand the cold, and also tolerates temperatures below freezing. One danger, however, is fungal diseases caused by excess moisture, including rust. It manifests itself with a sort of brownish mold that covers the needles and causes them to deteriorate: as a cure we suggest both natural methods, such as garlic infusions, and chemical ones, such as specific fungicides based on sulfur and zinc. Pests can also affect this tree; particularly annoying are aphids, which suck the sap and transmit various types of viruses. An excellent solution to eradicate them is nettle macerate, but pyrethrum-based insecticides are also fine.

Video: Big Silver Fir