This plant has in the system Hansen/Mussel used for describing perennials the following code : 5.1.4.4
Explanation of the first digit : General location : ALPINE GARDEN. Plant-lovers plants, they are difficult and demanding concerning treatment, place to put and soil. For the experienced gardener.
Explanation of the second digit : Specific demands of the plant : Plants for a sunny place with a cool soil.
Explanation of the third digit : Where to put : Chalkfree grit needed in the soil. A moist soil wanted.
Explanation of the fourth digit : Other characteristics : Does not sucker much, combines well with other plants.