Tips

Alder

How much to water the alder

The Alder generally should not be watered as the contribution of rain will be sufficient, but in very dry periods it is good to do some watering. This plant is usually found in the woods, next to ditches or in marshy areas, so frequent watering is required to grow it in the garden. The soil it prefers is not calcareous and the preferred climate is not summer, in fact the Alder loves moist soil with an abundance of water. It can be of different varieties in reference to climate and temperature, such as black, white or red alder. It is a plant used to reclaim and to create woods. The perfect soil is siliceous, but the plant also lives well in clayey earth, with an acid pH. If this plant is found far from sources of water its moisture needs are simply fairly high rainfall. The Alder blooms from February to April in cool areas.

How to grow alder


Alder usually prefers poor, stony and humid soils. It is recommended to grow this plant in spring using the seeds from the previous year. The same must be kept in the cold for a few months in order to create a winter environment and therefore help germination. Propagation can also take place by cuttings to be kept in a mixture of sand and moist soil. Even with sowing it is necessary to keep the earth always moist, but without causing water stagnation. In this environment the seedlings are born in 15 days; however, there is a much faster method to have an already adult tree undergone. The original plant must be stimulated to give birth to new shoots at the base that will grow and have their own roots. Later the shoots themselves will be separated and planted. L’

How to fertilize the tree


The fertilization of the Alder is not necessarily necessary; in the limit it is good to intervene in spring. The plant grows well on soils poor in organic matter and cannot tolerate drought. Alder is in symbiosis with those bacteria better called nitrogen fixing agents. In fact this is a tree that improves the composition of the soil where it was planted, moreover it adapts to different types of soil and in the case of marshy areas it also manages to reclaim as well as consolidate the banks. Nitrogen-fixing bacteria find a home, as they say, in the roots, stealing nutrients from the plant, but returning nitrogen, which the bacteria themselves obtain from the air. In this way the Alder makes the soil fertile and even in case of decomposition of the plant it has a positive influence by enriching the earth with nitrogen. At the end,

Alder: Exposures and diseases


Alder loves the sun, but not the shade of nearby trees. It proves to be a true colonizer, although it is easily overwhelmed by other types of plants over time. Alder grows very fast when young and consequently gets its true size right away. However, it is not long-lived and this feature is a deterrent to plant it in the garden. Alder is not prone to particular diseases or pests, but the shoots can be damaged by aphids. The plant must defend itself from the beetle that eats the leaves, while the fungi attack the flowers making them dry. The bacteria can therefore be very harmful both for the branches and for the stem, in fact they cause the leakage of a liquid that appears gummy. The vegetative cycle of Alder begins in spring when the leaves appear, then produces female and male catkins and in autumn you notice the first fruits which are like pine cones containing many seeds. If the same fruits remain on the tree they dry up and can remain in this condition even for years.

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