Eryngium maritimum - Sea holly

continental : We suggest to place the Eryngium maritimum where it is exposed to direct sunlight.
Avoid to expose these plants to frost. In winter replace them in the apartment or in the hothouse.

alpine : Place the Eryngium maritimum in a location exposed to direct sunlight.
The Eryngium maritimum does not tolerate cold, not even slight frosts which would damage the aerial part; for this reason it is suggested to grow them in a pot, so that they can be placed in a sheltered location during autumn and winter.

mediterranean : These plants need to be exposed to direct sunlight; in summer they can be exposed to a slight shadow without any problem.
These plants can not tolerate frost; therefore remember to cover their aerial part with frost cloth during very rigid winters.

Feed Eryngium maritimum : These plants are fertilized from March to October, during vegetative period; it is advisable to use a slow-release fertilizer, to be given only twice a year.

continental : Give very regular waterings; all year long the soil shall be kept humid, however avoiding dangerous stagnations. Increase waterings in summer and decrease them when autumn starts.

alpine : We suggest frequent and generous waterings, so that the soil remains mostly humid all year long. It is possible to decrease waterings in winter.

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