Eryngium giganteum - Sea holly

continental : Water the Eryngium giganteum very regularly, trying to maintain the soil always a little humid, but not soaked or with stagnating water. Remember to increase waterings during the most luxuriant vegetative period, from March until October, and to decrease watering when the cold period starts.

alpine : We remind to water the Eryngium giganteum very often, specially in summer; the soil shall be maintained humid constantly, but not soaked. During the cold season we can decrease waterings, but avoid the soil to dry out completely for too long periods.

mediterranean : Water the Eryngium giganteum very regularly, allowing the substrate to be constantly humid; increase waterings specially in summer, and decrease them in winter. Remember that these plants suffer from drought, specially in case of long duration drought.

continental : This plant prefers to be exposed to direct sunlight all year long.
They suffer from frost; therefore it is advisable to grow them in a pot, to be able to replace them in a sheltered place in winter; alternatively we can cover the aerial part with frost cloth.

alpine : Grow the Eryngium giganteum where it can be exposed every day to direct sunlight as long as possible.
These plants do not tolerate cold; therefore in autumn replace them in the apartment or in the hothouse.

mediterranean : Grow the Eryngium giganteum in a very bright location, with a good exposure to direct sunlight.
The Eryngium giganteum can be damaged also by slight frosts, therefore place them in a sheltered location, or cover them with frost cloth in winter.

Fertilization Eryngium giganteum : Fertilize medical plants using a universal fertilizer, every 15.20 days, from March to April.