





Helleborus orientalis

Lobelia fulgens

Catananche caerulea

Achillea millefolium

Actaea simplex

Knautia macedonica

Hyssopus officinalis

Helleborus orientalis

Viola odorata

Achillea millefolium

Helleborus orientalis

Helleborus orientalis

Geranium oxonianum

Achillea millefolium

Geum chiloense

Veronica longifolia

Lavandula angustifolia

Anemone hybrida

Salvia nemorosa

Rudbeckia subtomentosa

Calamintha nepeta ssp. nepeta

Filipendula vulgaris

Isodon longitubus

Galium odoratum

Stokesia laevis

Achillea millefolium

Centaurea montana

Geranium cantabrigiense

Brunnera sibirica

Clematis heracleifolia
Growing purple gromwell is an ideal solution for anyone who needs to liven up shady and dry places in the garden where most other plants fail to thrive. For planting the purchased seedlings, choose a location in partial shade or shade, ideally under the canopies of deciduous trees or taller shrubs. Although the plant tolerates a wide range of soils, it will prosper best in soil that is humous, permeable, and loamy. Gromwell likes limestone bases, so you don't even have to fear a more alkaline soil reaction. The soil should be well-drained, as the plant cannot tolerate permanent waterlogging, which could lead to root rot.
Plant the seedlings at a spacing of approximately 30 to 40 cm apart, which roughly equates to 9 to 12 plants per square meter. This spacing ensures that the plants will eventually merge thanks to their creeping rhizomes and create a dense, impenetrable carpet that effectively suppresses weed growth. After planting, it is necessary to water the plants thoroughly so the root ball connects well with the surrounding soil. Keep the soil slightly moist in the first few weeks after planting, but once the plant takes root, it becomes very resistant to drought and requires watering only during periods of extreme prolonged heat and drought.
As for care during the season, gromwell is very undemanding and is often spoken of as a maintenance-free perennial. In spring, it will delight you with a flood of violet-blue flowers, after the fading of which you can slightly trim the clumps so the plant remains compact and doesn't unnecessarily exhaust itself by producing seeds, although this is not strictly necessary. A big advantage is that this plant does not suffer from any common diseases or pests, so you can do without any chemical protection. Fertilization is not usually needed; the nutrients from the natural decomposition of leaves that fall on it in autumn are sufficient, or you can add a little mature compost in the spring.
In terms of frost resistance, gromwell is an absolute champion, handling temperatures down to -29 °C (zone 5a), so it does not need any special winter protection. As for growing in containers, it is possible, but due to its expansive nature and root system, it has its specifics. If you opt for growing in a planter box or pot, choose a sufficiently large and deep container with quality drainage at the bottom. In a container, the plant will require more frequent watering than in open soil, as the substrate dries out faster, and in winter you should insulate the container so the roots do not freeze.
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.



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

Gaura lindheimeri

Salvia nemorosa

Leucanthemum vulgare

Achillea millefolium

Perovskia atriplicifolia

Salvia nemorosa