Ireland
€
The shop is closed for this season 🔴, it is only possible to collect orders placed via the e-shop.
Ireland
€
The shop is closed for this season 🔴, it is only possible to collect orders placed via the e-shop.
Purple gromwell, Loukykvět
Purple gromwell, Loukykvět
Purple gromwell, Loukykvět
Purple gromwell, Loukykvět
Purple gromwell, Loukykvět
Purple gromwell, Loukykvět

Buglossoides purpurocaerulea

Purple gromwell

If you are looking for an indestructible perennial for the shady corners of your garden, purple gromwell is the right choice. In the wild, it is found in warm-loving oak forests and on forest edges, often on limestone substrates, where it bravely resists both drought and shade. Its dark green, lanceolate leaves stay fresh for a long time and form a dense cover that easily spreads laterally thanks to creeping rhizomes. This very trait makes it an expert at filling empty and problematic places under trees or shrubs, where other flowers often struggle to survive. In the spring months, the entire green carpet lights up with tiny flowers that transition from purple to deep royal blue—a color that is among the rarest in the plant kingdom. Although it is not suitable for cutting or drying, its value lies in reviving the darker corners of the garden and supporting natural biodiversity. It is a resilient plant that, once established, takes care of itself, while delighting with a flood of blue flowers every year. Show full description

Seedling

K9 pot (9×9×9.5 cm)
Seedling
Seedling
1-2 pieces
€3,29each
3-8 pieces
€2,99each
9-17 pieces
€2,69each
18+ pieces
€2,29each
Add to cart
149 pcs in stock

Attracts pollinators 🐝

Yes

Difficulty

Beginner

Diseases

Disease-free 🙂

Edible

No
?
Information on whether the plant can be used in floristry for decorating food.

Flower color

Blue, purple

Flower color: Shade

Blue-violet, royal blue

Foliage color

Dark green

Fragrant (aromatic) 👃

No

Frost resistance

-29
?
The temperature down to which the plant is frost hardy.

Hardiness zone

5a (-28.9 °C to -26.1 °C)

Height

20-50 cm

Moisture

💧💧

Pests

Pest-free 🙂

Position

Partial shade, shade

Soil

Loamy, humus-rich, well-drained

Spacing

30-40
?
Recommended planting spacing.

Spacing: Plants per m²

9-12

Species

Perennial

Suitable for cutting

No

Suitable for drying

No
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12
Flowering
April
June

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Brunnera sibirica

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Clematis heracleifolia

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Cultivation

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.

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Frequently asked questions

Characteristics

Planting site

Basic information

Diseases & pests

Propagation

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See how the seedling looks over the course of a year.

Purple gromwell - 11. 8. 2026
11. 8. 2026
Purple gromwell - 13. 7. 2026
13. 7. 2026

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