Gunnera manicata - Giant rhubarb

Adversity Gunnera manicata : Apply a precautionary fungicide Bordeaux mixture treatment at the end of winter, when the buds are not grown yet; during the year we can apply pesticide treatments, but only in case there is an effective presence of parasites on the plant.

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 Gunnera manicata 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 Gunnera manicata 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 Gunnera manicata : It is advisable to fertilize perennials using a slow-release fertilizer, to be placed on the soil; it is also possible to add some universal fertilizer to normal waterings, every 15-20 days, from March to October.