Canadian horseweed.

Auf einen Blick

Pflegestufe

Einfach

Pflanzenart

Annual herb

Licht

Full sun

Licht im Innenraum

Direkte Sonne

Gießen

Alle 7 bis 14 Tage

Endgröße

5 feet

Wachstum

Schnell

Winterhärte

USDA 3 bis 9

Blütezeit

Mid summer to mid autumn

Pflege

This plant thrives in full sun and well drained soil. Watch for wilting during extreme heat, though it is quite drought tolerant once established. It is a prolific seeder, so pull it before flowers fade if you want to limit its spread.

Gießen

Water only when the top inch of soil feels dry to the touch.

Düngen

This plant generally does not require supplemental fertilizer.

Schneiden

Remove spent flower heads to prevent unwanted self seeding.

Umtopfen

As an annual, this plant is typically not repotted.

Boden

Well drained, sandy or loamy

Boden-pH

6.0 to 7.5

Temperatur

-20 bis 35°C

Luftfeuchtigkeit

30 bis 70%

Sicherheit

Menschen

The plant may cause skin irritation in sensitive individuals upon contact.

Kinder

Keep away from children as the plant can cause skin irritation if handled.

Kontaktallergene

The foliage contains compounds that can cause contact dermatitis.

Allergene in der Luft

The abundant windborne seeds and pollen may trigger respiratory discomfort in sensitive people.

Essbarkeit

While historically used in herbal medicine, it is not considered a food crop and should be avoided.

So erkennst du die Pflanze

• Tall, unbranched hairy stem
• Narrow, lance shaped leaves
• Small white flower heads
• Forms a basal rosette initially

Höhe

0,3 bis 1,5m

Breite

0,15 bis 0,45m

Blätter

green, deciduous

Blüten

white, yellow, 0,5 bis 1cm

Früchte

tan, Autumn

Häufige Probleme

• Powdery mildew — A fungal infection that appears as white dust on leaves during humid weather.

Standort und Pflege

Vermehrung

seed

Pflanzzeit

spring, autumn

Plant in sunny, open areas to mimic its natural meadow habitat.

Gute Pflanzpartner

• Gewöhnliche Seidenpflanze — They share similar habitat requirements in open meadows.
• Goldrute — Both species provide late season nectar for pollinators.

Ähnliche Arten

• Erigeron philadelphicus — It has similar flower structures but prefers moister soil.

Botanisches

Familie

Asteraceae

Gattung

Erigeron

Ordnung

Asterales

Klasse

Magnoliopsida

Ursprüngliche Heimat

North America

Artenschutz

It is considered a common weed in many regions and is not of conservation concern.

It thrives in open, disturbed habitats where it acts as an early successional species.

Nutzen für Wildtiere

nectar source, larval host plant

Bestäuber

Bienen, Schmetterlinge, Käfer

Verwendung

pollinator garden, meadow restoration, herbal history

Taxonomie abgeglichen mit GBIF.

Häufige Fragen

Is this plant invasive?

It is native to North America but can act as an aggressive colonizer in disturbed areas.

Does it need much water?

It is quite drought tolerant once established.

Woher der Name kommt

The genus name comes from Greek words meaning early and old man, referring to the white, hair-like pappus. The species name indicates its origin in Canada.

Gut zu wissen

• It is also known as horseweed.
• The plant was once used to treat various ailments in traditional medicine.
• It is a pioneer species that quickly covers bare soil.