Helianthus tuberosus - Sunflower

Fertilize Helianthus tuberosus : During the autumnal months annual plants are at the end of their vegetative cycle; usually they get fertilized only if they are in full vegetation, but as the cold weather arrives we tend to avoid watering and fertilizing.

continental : The Helianthus tuberosus needs direct sunlight, even for many hours a day.
These plants can stand the cold, therefore they can be placed in the garden during the whole year; they don’t need protection against the cold.

alpine : These plants prefer very sunny locations, where they are exposed to sunrays for most of the day.
These plants are grown in the garden, in full ground, because they can stand the cold.

mediterranean : This plant needs to be exposed to direct solar rays.
The Helianthus tuberosus is grown in the garden, because it can stand the cold.

continental : We suggest watering quite frequently, every 0-1 weeks. In this manner it will be kept fairly moist, without being soaked with water. Usually 3-4 glasses of water are used.

alpine : Watering should be done pretty frequently and regularly, but without exceeding: let’s remember to we the soil thoroughly and let it dry before giving it more water. Let’s irrigate every 1-2 weeks using 2-3 glasses of water.

mediterranean : Watering in this period of the year must be very frequent, even every 0-0 weeks, so that the soil is always slightly damp. For average dimension plants we suggest using about 4-5 glasses of water.

Pests Helianthus tuberosus : Before the cold months arrive, a wide range anticryptogamic treatment is advised; the plants which have been struck by black spot disease or other fungal pathologies must be cured in a specific manner, remembering to gather and destroy the leaves affected by diseases.