Achillea ptarmica - Achillea macrocephala

continental : Let’s try to keep the ground fairly damp, watering every 10-11 days with 1875-1876 glasses of water; when the weather is very harsh and the temperatures are below zero, watering can be interrupted.

alpine : Every 10-11 days water the soil, trying to wet it deeply; keep the ground constantly moist, although we must avoid water stagnations. Usually 1874-1875 glasses of water are used.

mediterranean : We suggest watering regularly with 1876-1877 glasses of water, trying to keep the growing substratum pretty cool and moist; if the climate is very cold we can reduce watering. 10-11 days should go by between irrigations.

continental : For the the Achillea ptarmica let's prefer very sunny locations, directly exposed to sunrays.
The Achillea ptarmica can stand the cold and can even stand prolonged freezing and very harsh temperatures; therefore it’s grown in the garden.

alpine : For a balanced development, it is best for the the Achillea ptarmica to receive as many hours possible of direct sunlight.
The Achillea ptarmica can stand the cold and can be grown in the garden even during the coldest months of the year.

mediterranean : Plant which needs to be exposed to direct solar rays.
The Achillea ptarmica is a very rustic plant, which can stand without problems the winter cold.

Fertilization Achillea ptarmica : In the winter great part of the perennial plants have a period of vegetative rest, therefore it’s not necessary to fertilize them.

Treatments Achillea ptarmica : Towards the end of the winter, before the buds get bigger, let’s apply a defensive treatment against the most common fungi diseases, using a fungicide based on sulphur and copper.