Flax-Leaved Horseweed (Erigeron bonariensis)

Flax-leaved Horseweed (Erigeron bonariensis) is an annual weed with slender stems and narrow leaves, often found in disturbed areas. It produces small daisy-like flowers.

Above information is sourced from Wikipedia

Sunlight

Full Sun

Watering

Moderate

Soil

Well-drained

Temperature

Average

Fertilizer

Low

Care Requirements

Light

Full Sun

Prefers at least 6 hours of direct sunlight daily.

Water

Moderate

Allow soil to dry slightly between waterings. Reduce in winter.

Soil

Well-drained

Temperature

Average

Thrives in average room temperatures (18-24°C). Protect from frost.

Fertilizer

Low

Fertilize sparingly in spring with a balanced liquid feed.

Plant Overview

Plant Type

Herb

Plant Place Type

Garden

Lifespan

Annual

Plant Height

0.3-1.5 m

Spread

0.1-0.5 m

Growth Rate

Fast

Dormancy

None

Leaf Color

Green

Leaf Type

Linear

Flower Size

3-5 mm

Optimal Sunlight Lux

120000

Weed Status

Yes

Image Gallery

Flowering & Fruiting Cycles

Monthly activity intensity for bloom and fruit across both hemispheres.

Northern hemisphere

Flowering & fruiting calendar

Peak bloom · JulPeak fruit · Aug

FloweringFruiting

Southern hemisphere

Flowering & fruiting calendar

Peak bloom · FebPeak fruit · Feb

FloweringFruiting

Synonyms

Conyza bonariensis (L.) Cronquist

Conyza chenopodioides DC.

Conyza crispa Rupr.

Conyza hispida Kunth

Conyza leucodasys Miq.

Conyza linearis DC.

Conyza plebeia Phil.

Conyza sinuata Elliott

Conyza sordescens Cabrera

Conyzella linifolia (Willd.) Greene

Dimorphanthes angustifolia Cass.

Dimorphanthes crispa Rupr.

Dimorphanthes hispida Cass.

Dimorphanthes linifolia (Willd.) Rupr.

Erigeron crispus Pourr.

Erigeron gusalakensis Rech.f. & Edelb.

Erigeron linearifolius Cav.

Erigeron linifolius Willd.

Erigeron looseri Herter

Erigeron sordidus Gillies ex Hook. & Arn.

Erigeron transsilvanicus Schur

Leptilon bonariense (L.) Small

Leptilon linifolium (Willd.) Small

Marsea bonariensis (L.) V.M.Badillo

Pulicaria rufescens Nyman

Taxonomy

kingdomPlantae
divisionTracheophyta
classMagnoliopsida
orderAsterales
familyAsteraceae
genusErigeron
speciesErigeron bonariensis

Toxicity

Toxic for humans

Rating: 0/5

Toxic for pets

Rating: 0/5

Edible

Generally considered non-toxic, though some individuals may experience mild skin irritation from contact with the sap.

Additional Care Tips

Water moderately during the growing season, allowing the soil to dry slightly between waterings. Reduce watering in winter, providing just enough to prevent the soil from becoming bone dry. Overwatering can lead to root rot, so ensure good drainage.

Pruning is generally not required for aesthetic reasons, as the plant has an upright, somewhat airy habit. However, you can remove spent flower stalks to prevent unwanted self-seeding. Pinching back young plants can encourage a bushier habit if desired.

Propagation is primarily through self-seeding, as it produces abundant small seeds. You can also propagate by collecting seeds in late summer or fall and sowing them in pots or directly into the garden in spring. Division of established plants is possible but less common.

Repotting is rarely necessary for Flax-leaved Horseweed. It is often grown as an annual or treated as a weed. If grown in a container and it becomes root-bound, repot in spring to a slightly larger pot with well-draining potting mix. Ensure the new pot has drainage holes.

FAQs

What is the growth habit of Erigeron bonariensis?

Erigeron bonariensis is an annual plant, meaning it completes its life cycle in one year, typically germinating, growing, flowering, and setting seed within that period.

How tall does Flax-leaved Horseweed grow?

Flax-leaved Horseweed typically grows to a height of 30 to 100 centimeters (approximately 1 to 3.3 feet).

What kind of flowers does Erigeron bonariensis produce?

It produces numerous small, daisy-like flower heads, usually white with yellow centers, borne in a branching inflorescence.

Where is Erigeron bonariensis commonly found?

Erigeron bonariensis is frequently found in disturbed habitats, such as roadsides, waste areas, agricultural fields, and gardens, indicating its preference for open, unshaded ground.

Is Erigeron bonariensis considered a problematic weed?

Yes, Erigeron bonariensis is often considered an invasive weed in many regions due to its prolific seed production and ability to colonize disturbed soils rapidly.

Care Requirements

Light

Full Sun

Prefers at least 6 hours of direct sunlight daily.

Water

Moderate

Allow soil to dry slightly between waterings. Reduce in winter.

Soil

Well-drained

Temperature

Average

Thrives in average room temperatures (18-24°C). Protect from frost.

Fertilizer

Low

Fertilize sparingly in spring with a balanced liquid feed.

Image Gallery

Additional Care Tips

FAQs

What is the growth habit of Erigeron bonariensis?

Erigeron bonariensis is an annual plant, meaning it completes its life cycle in one year, typically germinating, growing, flowering, and setting seed within that period.

How tall does Flax-leaved Horseweed grow?

Flax-leaved Horseweed typically grows to a height of 30 to 100 centimeters (approximately 1 to 3.3 feet).

What kind of flowers does Erigeron bonariensis produce?

It produces numerous small, daisy-like flower heads, usually white with yellow centers, borne in a branching inflorescence.

Where is Erigeron bonariensis commonly found?

Erigeron bonariensis is frequently found in disturbed habitats, such as roadsides, waste areas, agricultural fields, and gardens, indicating its preference for open, unshaded ground.

Is Erigeron bonariensis considered a problematic weed?

Yes, Erigeron bonariensis is often considered an invasive weed in many regions due to its prolific seed production and ability to colonize disturbed soils rapidly.

Flax-Leaved Horseweed (Erigeron bonariensis)

Care Requirements

Plant Overview

Image Gallery

Flowering & Fruiting Cycles

Additional Care Tips

Water

Pruning

Propagation

Repotting

FAQs

What is the growth habit of Erigeron bonariensis?

How tall does Flax-leaved Horseweed grow?

What kind of flowers does Erigeron bonariensis produce?

Where is Erigeron bonariensis commonly found?

Is Erigeron bonariensis considered a problematic weed?

Loading plant details

Flax-Leaved Horseweed (Erigeron bonariensis)

Care Requirements

Plant Overview

Image Gallery

Flowering & Fruiting Cycles

Additional Care Tips

Water

Pruning

Propagation

Repotting

FAQs

What is the growth habit of Erigeron bonariensis?

How tall does Flax-leaved Horseweed grow?

What kind of flowers does Erigeron bonariensis produce?

Where is Erigeron bonariensis commonly found?

Is Erigeron bonariensis considered a problematic weed?