Blue smeerwortel is real a voorjaarsplant. All in april. The size after 10 years is 60 cm. The flower colour is light blue. This plant is completely hardy.The flowering period is April - May.
This plant has in the system Hansen/Mussel used for describing perennials the following code : 1.2.3.3
Explanation of the first digit : General location : WOODLAND. Plants, that in a garden need to be planted close to trees or shrubs. They require shade and prefer a peaty soil.
Explanation of the second digit : Specific demands of the plant : Plants for a sheltered, shaded place, between or near trees or shrubs, with a cool soil and maybe an hour or so sun a day.
Explanation of the third digit : Where to put : Light shade, possible near a rock garden.
Explanation of the fourth digit : Other characteristics : Suckering plant.