Great globe-thistle (Echinops sphaerocephalus)

Also known as: Common globe-thistle, Globe thistle

The Great globe-thistle (Echinops sphaerocephalus) is native to southeastern Europe and parts of western Asia, thriving in sunny, rocky environments. It has also spread to North America, where it is often regarded as a weed. The name "Echinops" derives from Greek, meaning "hedgehog-like" due to its spiky appearance, while "sphaerocephalus" refers to its spherical flower heads, combining "sphaero" (sphere) and "cephalus" (head).

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Great globe-thistle

Lifespan

Perennial

Plant Type

Herb

Plant Height

50 cm to 1.5 m

Spread

1 m

Leaf Color

Green Gray

Flower Size

2.5 cm

Flower Color

White Green Silver

Images of Great globe-thistle

Quickly Identify Great globe-thistle

Look for spherical, blue or white flower heads that resemble a globe. The leaves are spiny and have a grayish-green color. The plant typically grows upright with a sturdy stem.

Scientific Classification of Great globe-thistle

Phylum

Vascular plants

Class

Dicotyledons

Order

Asterales

Family

Daisy

Genus

Globe thistles

Species

Great globe-thistle

Planting and Growing of Great globe-thistle

Care Difficulty

Easy

Watering Schedule

Every 2 days

Sunlight Requirements

Full sun

Sunshine Duration

4-8 hours

Ideal Temperature

60-75℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Great globe-thistle?

Echinops sphaerocephalus prefers a moderate amount of water to thrive. The soil should be damp but not waterlogged, which means you should provide about 500 ml of water each time. Always check the top inch of soil; if it's dry, it's time to water.

What are the symptoms of an underwatered Great globe-thistle? ›

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What Are the Sunlight Requirements for Great globe-thistle?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6 to 8 hours daily

Echinops sphaerocephalus thrives in full sun with at least six hours of direct sunlight daily. Ideal light exposure promotes strong, vibrant growth and enhances the quality and quantity of blooms.

What is the ideal amount of sunlight for Echinops sphaerocephalus? ›

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More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Great globe-thistle?

Ideal Temperature: 60 ~ 75℉

The ideal temperature range for Echinops sphaerocephalus is between 60°F and 75°F. Within this range, the plant can thrive, develop healthy foliage, and produce vibrant flowers. Maintaining this temperature range ensures proper metabolic functions and overall plant well-being.

What Soil is Best for Great globe-thistle?

Soil type: Loam, Sandy soil, Sandy loam

Soil PH: 6.5 ~ 7.5

Echinops sphaerocephalus thrives best in well-drained soil which helps prevent root rot by ensuring excess water does not accumulate around the roots, allowing them to access necessary oxygen for growth. A nutrient-rich loam is ideal as it provides a balanced mixture of sand, silt, and clay, ensuring the plant receives adequate nutrients to support its hearty growth and vibrant blooms. While being drought-tolerant, this plant benefits from moderately moist conditions, which help sustain vigorous growth during dry spells, providing hydration without overwatering.

How to Fertilize Great globe-thistle?

Fertilizer type: Balanced

For Echinops sphaerocephalus, the application of fertilizer should be moderate. Use a liquid fertilizer at one-quarter strength every two weeks during the growing season. Avoid over-fertilizing to prevent root burn.

How to Prune Great globe-thistle?

Pruning Time: Autumn, Winter

In late Autumn or early Winter, cut back any dead or damaged stems to about one inch above the soil line. Doing this encourages healthier regrowth in the coming growing season. Trim the plant to maintain its rounded shape. Use your tools to carefully remove any stems that are growing out of alignment with the natural form of the plant. More About Pruning Techniques→

How to Propagate Great globe-thistle plant?

Propagate Time: Spring, Early summer

Begin by preparing a seed tray with well-drained potting soil. Gently press the seeds into the surface and cover lightly with soil. Water the tray carefully and maintain a warm temperature for optimal germination.

Select healthy, non-flowering stems and cut a 5-6 inch segment. Strip away the lower leaves, and dip the cut end in rooting hormone before planting it into a pot with damp soil. Keep the pot in a shaded, warm place.

For division propagation, carefully dig up a mature plant and divide the rootball into sections using a sharp knife. Each section should have roots and shoots. Replant the divisions immediately at the same depth as the original plant.

More About Propagating Techniques→

How to Repot Great globe-thistle plant?

Repotting frequency: Every 2-3 years

Repot your Echinops sphaerocephalus when it becomes root-bound or when growth slows unexpectedly. Signs include roots growing out of the drainage holes, visible crust on the soil surface, or poor water retention. Spring or Autumn are ideal times, as the plant is not in peak growth.

Select a pot that is one size larger than the current one, ensuring it has ample drainage holes. A slightly larger pot prevents water logging, encourages healthy root growth, and balances the plant aesthetically without overwhelming its current size.

Opt for a well-draining potting mix with a mix of loam, sand, and organic matter. This mix provides necessary drainage while retaining essential nutrients, ensuring the plant roots stay moist but not soggy, preventing root rot and promoting healthy growth.