Mahonia aquifolium - Hollyleaved barberry

Pests Mahonia aquifolium : The treatments are applied only in case there is an effective presence of parasites on the plant, using specific products. We suggest to avoid any treatment during bloom, which can injure pollinating insects.

continental : Waterings for the Mahonia aquifolium will be frequent in spring and summer and more occasional in autumn and almost suspended in winter. We remind that it is a rule to avoid the supply of water if the soil is still humid.

alpine : Waterings will be regular and generous, specially in summer, remember to allow the substrate to dry out between two waterings. In winter waterings can be suspended.

mediterranean : Supply water regularly during vegetative period, when the soil is very dry; when temperatures decrease we can decrease waterings and suspend them in winter.

continental : Grow the Mahonia aquifolium away from direct sunlight, in a semishady location.
This is a very rustic garden plant, that should not have problems even in case of very intense frosts.

alpine : These plants like few hours a day of sunlight, therefore place them in a location where they are exposed to a filtered sunlight or that are shaded for few hours a day.
The Mahonia aquifolium is very rustic and can be grown in the garden all year long; it does not suffer from even intense frosts.

mediterranean : These plants need to be placed in semishady locations for most part of the day.
The Mahonia aquifolium does not suffer from cold and frost; this is a plant that can be grown in the garden all year long.

Fertilize Mahonia aquifolium : Shrubs fertilizing is given at the end of winter and at the end of summer, by burying at the base of the trunk a granular fertilizer or preferably a ripe organic fertilizer.