Echinops ritro
Globe thistle
Common names: Southern globe thistle
At a glance
- Light
- Full sun
- Pot size
- from 15 l
- Lifespan
- Perennial
- Flowering
- Jul–Sep
- Hardiness
- Hardy
Photo: Isidre blanc · CC BY-SA 4.0 · Source
Description
Echinops ritro produces steel‑blue, spherical flower heads from July on upright, silvery‑hairy stems, creating a small sculptural effect in the garden. It is one of the best bee and bumblebee attractors in summer gardens and reliably draws butterflies and other wild bees. The spiny, thorn‑like leaves give the plant a hardy character, while the flowers remain easily accessible to insects. As a steppe and drought‑tolerant species, it thrives on lean, well‑drained soils and full sun, and pairs well with prairie beds, gravel gardens, and naturalistic perennial borders.
Care instructions
Plant the globe thistle in a warm, full‑sun location with well‑drained, rather lean soil; heavy, clayey earth is poorly tolerated. Water regularly only during the growing phase; afterwards it copes well with summer dryness and requires little additional watering. Fertilizer can largely be omitted; nutrient‑rich soil softens the stems and can cause the plant to fall over. Leave spent flower heads over winter, they provide seeds for birds and a winter refuge for insects. Cut back only in early spring, around week 8 to 10. After several years, divide the clumps in spring to maintain flowering vigor and propagate new plants.
The care notes were machine-translated from German.
Garden year
FloweringJul–Sep
Soil & site
Soil pH
Soil type
well-drained, lean, dry, lime-loving
The small globe thistle loves it barren and sunny, as at its steppe sites in its homeland. It tolerates heavy, waterlogged soils poorly; here the roots rot quickly. On loamy soil, mix in plenty of sand or gravel so water drains well. It especially likes chalky, poor soils.
Feeding
Light feeder
The small globe thistle copes well with few nutrients and rewards conditions that are too poor rather than too rich with more compact, sturdy growth. A thin dose of compost in spring is entirely enough. Soil that is fed too generously leads to soft, flopping shoots. It is better to skip extra feeding altogether if your soil is already rich in nutrients.
Overwintering
The small globe thistle is hardy and usually gets through German winters entirely without protection. Above all, a free-draining site is important, because wet cold affects it more than frost. Leave the stems standing over winter; they look pretty with hoar frost and offer insects shelter. Cut back only in early spring, shortly before new growth begins.
Propagation
Methods
- From seed
- Division
- Cuttings
The easiest way is to divide larger clumps in spring and set the pieces straight into new locations. Sowing works well too; the small globe thistle germinates reliably and often flowers as early as the second year. Root cuttings in early spring are another reliable method for strong young plants. Give freshly divided or rooted plants a sunny, poor spot, and they will establish quickly.
Companion planting
Companion planting is partly traditional gardening lore. Where the reason is known, it is given.
Some of these explanations were machine-translated.
For your garden
Grow Globe thistle yourself
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