Blechnum penna-marina - Deer fern

Fertilization Blechnum penna-marina : During autumn we should fertilize less often, only every 30-40 days; as the days get shorter our plants need less fertilizer.

continental : Plant which favours shady locations, avoid exposing it to direct solar rays.
The Blechnum penna-marina is a rustic plant, which doesn’t tolerate the winter cold, even when the nocturnal temperatures are very low.

alpine : Let's choose a partially shaded place, protected by direct solar rays.
The Blechnum penna-marina can stand the cold, therefore it can be grown outdoors year round.

mediterranean : Avoid as much as possible that the plant be exposed to direct solar rays; therefore let's choose a shady location.
Grow the The Blechnum penna-marina in the garden, in full ground; it can stand the cold.

continental : We advise leaving the ground prevalently dry, watering from time to time, every 1-2 weeks; if there are intense rains and the weather is quite cold we can reduce the watering even more. Usually 20-21 glasses of water are used.

alpine : We suggest watering rarely, such as every 2-3 weeks with 19-20 glasses of water, but only when the weather is mild, and the substratum has been dry for days.

mediterranean : During this time of year we suggest watering only once in a while using 21-22 glasses of water, leaving the soil dry for a few days before watering it again. If the weather is cold irrigate rarely. Between one watering and the other 0-1 weeks should go by.

Treatments Blechnum penna-marina : During the cold months many pathogens spend the winter in the ground, at the feet of our plants; let’s treat the plants struck by black spot disease or by leaf curl disease with particular attention by applying a wide-range anticryptogamic treatment, to vaporize even on the ground. Let’s gather and destroy the leaves of the sick plants.