Cosmos bipinnatus

Adversity Cosmos bipinnatus : Avoid to apply treatments on plants that are not infected by parasites; in any case avoid to give pesticides or fungicides during bloom, to avoid to injure the bees. At the end of winter we can apply a Bordeaux mixture treatment, to prevent the growth of fungal diseases.

continental : These plants need rather frequent waterings in spring and summer, always allow the soil to dry out between two waterings. We can suspend waterings during cold months.

alpine : It is advisable to give regular waterings, specially during spring and summer; before giving again water make sure the soil is dry.

mediterranean : Waterings shall be given by watering the soil deeply, but only when it is very dry, avoiding to leave plant roots in stagnating water. During the cold season we can suspend waterings.

continental : The Cosmos bipinnatus needs to be exposed to direct sunlight for many hours a day to have a luxuriant growth
We suggest to grow this plant in a sheltered place away from frost and wind, even though it can tolerate slight frosts without any problem.

alpine : The Cosmos bipinnatus prefer very bright locations, where they can receive direct sunlight.
These plants do not tolerate excessive frosts; it is therefore suggested to grow them in a sheltered place away from the wind, for example close to the house; or cover the aerial part with a frost cloth in winter.

mediterranean : They bear few hours of half-darkness, but need at least few hours a day of direct sunlight.
They do not suffer from cold, and tolerate also temperatures close to -5°C; they are normally grown in the garden without any problem, or they are placed in a sheltered location away from the wind.

Feed Cosmos bipinnatus : Fertilize annual plants enriching the soil in which they are planted with a slow-release granular fertilizer; in this way we will automatically give them some fertilizer with every watering.