Alnus glutinosa - Gray alder

continental : Let’s water these plants only when there are prolonged droughts; if the weather is mild, we can water once every 4-5 weeks, using , but only if the ground is completely dry.

alpine : During wintry months watering will be sporadic; we suggest irrigating only when the climate is mild and the ground is dry. If the temperatures are very harsh, we can interrupt watering, otherwise let’s act every 5-6 weeks with .

mediterranean : During the cold months watering takes place only during the mild days, let’s avoid harsh, freezing days, by watering every 3-4 weeks or less with .

continental : For the The Alnus glutinosa let's prefer very sunny locations, directly exposed to sunrays.
The Alnus glutinosa can stand the cold and can even stand prolonged freezing and very harsh temperatures; therefore it’s grown in the garden.

alpine : For a balanced development, it is best for the The Alnus glutinosa to receive as many hours possible of direct sunlight.
The Alnus glutinosa can stand the cold and can be grown in the garden even during the coldest months of the year.

mediterranean : Plant which needs to be exposed to direct solar rays.
The Alnus glutinosa is a very rustic plant, which can stand without problems the winter cold.

Fertilization Alnus glutinosa : Trees usually need fertilization during the winter months; let’s remember to enrich the soil when we intend to plant a new tree.

Treatments Alnus glutinosa : Towards the end of the winter, before the buds get bigger, let’s apply a defensive treatment against the most common fungi diseases, using a fungicide based on sulphur and copper.