






Echinops bannaticus

Catananche caerulea

Gypsophila paniculata

Achillea millefolium

Echinops bannaticus

Nepeta racemosa

Knautia macedonica

Centaurea montana

Limonium latifolium

Rudbeckia fulgida

Leucanthemum vulgare

Aquilegia vulgaris

Cephalaria gigantea

Achillea millefolium

Achillea millefolium

Delphinium hybrida

Achillea millefolium

Liatris spicata

Delphinium hybrida

Perovskia

Lavandula angustifolia

Alchemilla mollis

Echinacea purpurea

Calamintha nepeta ssp. nepeta

Salvia nemorosa

Papaver orientale

Anemone hybrida

Sanguisorba officinalis

Salvia nemorosa

Aquilegia vulgaris
Sea holly 'Glitter Blue' is an undemanding perennial that even a complete beginner can manage to grow, provided they give it the most important things – sun and well-draining soil. Plant the seedlings exclusively in full sun, where they will color best into attractive steel-blue shades. In the shade, the plant would lose its color and stretch out. The soil should be deep, well-draining, sandy, and rather poorer. Sea holly cannot stand heavy, clayey, and wet soils, in which its roots rot in winter. If you have heavier soil in your garden, it is necessary to mix in sand or gravel during planting and ensure good drainage.
This plant requires watering only after planting, until the seedling roots well. Once established, it is very drought-resistant and requires only minimal watering, making it an ideal choice for dry steppe beds or gravel gardens. The plant does not need to be fertilized; in excessively nutritious soil, it could grow too vigorously at the expense of stem firmness, causing them to topple over. Choose a planting spacing of approximately 35–45 cm (about 5–7 plants per m²) so that the plants have enough space and air, which is also important as a prevention against potential fungal diseases, although sea holly is generally a healthy plant.
As for maintenance and protection, sea holly is fully frost-resistant (down to -34 °C) and does not need any special cover for the winter. On the contrary, its sturdy stems with bracts are beautiful even in winter when covered in hoarfrost, so we recommend cutting them only in early spring. The only major enemy can be voles, which find its roots tasty. The plant can also be grown in containers, but these must be deep enough due to the taproot and must have a thick drainage layer at the bottom so water does not stand at the roots.
The information given is based on our experience, please use it as a guide only. Times may vary depending on the season, climate, location, sowing and transplanting dates and possibly also the conditions in the greenhouse/greenhouse. We always recommend testing how the plant performs in your conditions. Please do not take this as a guarantee.
See how the seedling looks over the course of a year.










Eryngium planum

Eryngium planum

Eryngium planum

Eryngium yuccifolium

Eryngium alpinum

Alchemilla mollis

Achillea millefolium

Verbena bonariensis

Salvia nemorosa

Perovskia atriplicifolia

Gaura lindheimeri

Echinacea purpurea

Echinacea pallida

Eryngium planum

Echinacea purpurea

Salvia nemorosa

Calamintha nepeta

Rudbeckia fulgida

Calamintha nepeta ssp. nepeta

Salvia nemorosa

Gaura lindheimeri

Leucanthemum vulgare

Achillea millefolium

Perovskia atriplicifolia

Salvia nemorosa