Eryngium giganteum - Sea holly

continental : Locate the the Eryngium giganteum In a sunny place.
The Eryngium giganteum doesn't like temperatures below zero, but in the Summer we can grow it outside without any problems.

alpine : Plant which needs at least a few hours a day of solar light.
During the summer the the Eryngium giganteum can be grown in the garden; during the rest of the year it should be located in a sheltered place.

mediterranean : We suggest placing the the Eryngium giganteum so that it can receive at least a few hours of direct solar rays.
We suggest cultivating these plants outdoors, but only during the spring and summer months.

continental : Let’s try to always keep the growing substratum of the the Eryngium giganteum damp, watering very frequently with 1,5 litres of water; if the weather is very hot and dry we even water every 1-2 weeks.

alpine : As the hot season arrives, these plants need abundant and regular watering, using 14 litres of water, which keep the soil cool and damp; let’s water every 2-3 weeks, or even more often if it is very hot.

mediterranean : The Eryngium giganteum loves damp and cool soils, therefore it is necessary to water it very often, keeping the soil slightly damp; in any case it is always advisable to avoid water stagnation and excess watering: it is best to water every 0-1 weeks.

Fertilization Eryngium giganteum : In the summer let’s fertilize medicinal plants using a slow release fertilizer, to add to the soil every 3-4 months; we can also fertilize them using a fertilizer for flowering plants, to mix to the irrigating water every 15-20 days.