Arisaema amurense - Jack in the pulpit

Fertilization Arisaema amurense : We should enrich the soil of newly planted bulbous plants with organic fertilizer; it’s not necessary to fertilize summer flowering bulbous plants during this period of the year.

continental : We can grow the the Arisaema amurense in a place where it can receive a few hours a day of direct sunlight, but where it is protected from the sun during most of the day.
In autumn these plants are grown in the garden; they can tolerate temperatures a few degrees below zero without problems.

alpine : Locate this plant in a partially shaded place, where it can receive a few hous of direct solar light.
Autumn temperatures are easily tolerated by the the Arisaema amurense which usually doesn’t get damaged by short freezing; if the temperatures should go below -5°C, let’s protect our plant with a non-woven fabric.

mediterranean : We suggest a pretty sheltered location, so that the plant can receive direct solar rays only during the coolest hours of the day.
The Arisaema amurense can stand temperatures a few degrees under zero, therefore they can be usually cultivated as garden plants.

continental : Let’s water every 0-1 weeks with 2-3 glasses of water, or even more often if the weather is hot and dry; we should always try to keep the ground slightly damp.

alpine : Water regularly, every 1-2 weeks, wetting the soil thoroughly by using 1-2 glasses of water and keeping it always a bit moist, although avoiding to soak it too much.

mediterranean : For a balanced development these plants need constant and abundant dampness; during this time of year it is good to water frequently, about 3-4 glasses of water at least every 0-0 weeks.

Treatments Arisaema amurense : 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.