Canada thistle.

Auf einen Blick

Pflegestufe

Einfach

Pflanzenart

Perennial herb

Licht

Full sun

Licht im Innenraum

Direkte Sonne

Gießen

Alle 7 bis 14 Tage

Endgröße

1 to 5 feet

Wachstum

Schnell

Winterhärte

USDA 3 bis 9

Blütezeit

Late spring to early autumn

Pflege

This plant thrives in full sun and tolerates a wide variety of soil conditions. Keep an eye out for rapid spread, as it can quickly overtake other plants in your garden. Regular removal of the entire root system is necessary to control its growth.

Gießen

Water deeply when the top inch of soil feels dry.

Düngen

Generally does not require supplemental fertilizer.

Schneiden

Cut back stems before they set seed to prevent spread.

Umtopfen

Repot only if you are keeping it in a container to manage its spread.

Boden

Well drained, fertile soil

Boden-pH

6.0 to 7.5

Temperatur

-30 bis 35°C

Luftfeuchtigkeit

30 bis 80%

Sicherheit

Menschen

The plant is not considered toxic, but the sharp spines can cause significant mechanical injury to skin.

Kinder

The sharp, spiny foliage poses a significant risk of puncture wounds to children handling the plant.

Kontaktallergene

The sharp spines and stiff hairs on the leaves and stems can cause skin irritation or dermatitis upon contact.

Allergene in der Luft

The windborne seeds have fine, feathery pappi that may cause respiratory irritation if inhaled in large quantities.

Essbarkeit

While young leaves are sometimes consumed after careful preparation, the plant is generally considered unpalatable and potentially irritating.

So erkennst du die Pflanze

• Spiny, lobed, lance shaped leaves
• Small, fragrant, purple flower heads
• Extensive creeping underground root system
• Stems are smooth and lack spines

Höhe

0,3 bis 1,5m

Breite

0,3 bis 0,6m

Blätter

green, deciduous

Blüten

purple, pink, white, 1 bis 2cm

Früchte

brown, late summer

Häufige Probleme

• Rust — Fungal infection causing orange or brown pustules on the undersides of leaves.

Standort und Pflege

Vermehrung

seed, division, root cuttings

Pflanzzeit

spring, autumn

Because this plant is so aggressive, it is best to avoid planting it near desirable garden species that it might crowd out.

Gute Pflanzpartner

• Schafgarbe — Both species thrive in similar open, sunny conditions.

Ähnliche Arten

• Bull thistle — It is a biennial species with much larger, more prominent spines.

Botanisches

Familie

Asteraceae

Gattung

Cirsium

Ordnung

Asterales

Klasse

Magnoliopsida

Ursprüngliche Heimat

Europe and northern Asia.

Artenschutz

It is widely considered an invasive weed and is often subject to mandatory control measures in many regions.

It thrives in disturbed soils and open fields, using its deep root system to outcompete other vegetation.

Nutzen für Wildtiere

nectar source, larval host plant

Bestäuber

Bienen, Schmetterlinge, Nachtfalter

Verwendung

pollinator habitat, wildlife forage

Taxonomie abgeglichen mit GBIF.

Häufige Fragen

How do I get rid of it?

Consistent, repeated removal of the entire root system is necessary to exhaust the plant's energy reserves.

Is it a good plant for a garden?

It is generally not recommended for home gardens due to its aggressive, invasive nature.

Woher der Name kommt

The genus name Cirsium comes from the Greek word for a thistle, while the species name arvense means of the field.

Gut zu wissen

• It is one of the most persistent and difficult weeds to eradicate from agricultural land.
• The root system can extend several meters deep into the soil.
• It produces thousands of seeds that are easily carried by the wind.
• Despite its reputation, it is a vital nectar source for many native pollinators.