Photo by Melody

PlantFiles: Wormseed wallflower, Treacle Mustard, Wormseed Mustard
Erysimum cheiranthoides

Family: Brassicaceae (brass-ih-KAY-see-ee) (Info)
Genus: Erysimum (er-RIS-ih-mum) (Info)
Species: cheiranthoides (ky-ranth-OH-id-ees) (Info)

One member has or wants this plant for trade.


24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

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Sun Exposure:
Full Sun
Sun to Partial Shade

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Bloom Color:
Bright Yellow

Bloom Time:
Late Spring/Early Summer

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Other details:
Unknown - Tell us

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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No positives
No neutrals
1 negative

Gardeners' Notes:

Negative RosemaryA On Aug 3, 2008, RosemaryA from Toronto, ON (Zone 5b) wrote:

Erysimum cheiranthoides aka wormseed mustard, treacle mustard, wormseed wallflower is a herbaceous annual native to northern and central Eurasia but widely naturalized elsewhere including south and west Europe and North America.

Ontario Ministry of Agriculture, Food, and Rural Affairs states: Caution: Every effort should be made to prevent Wormseed mustard from going to seed in fields of oats or barley where these cereal grains may be used for feeding pigs. Seeds of Wormseed mustard have an extremely bitter taste, and when feed is contaminated by a very small fraction of a percentage of Wormseed mustard seeds, pigs will refuse to eat it. Apparently cattle and horses can tolerate larger proportions of Wormseed mustard than can pigs.

Government of Canada Poisonous Plants Information System states that cattle became sick and pigs died after eating feed contaminated with wormseed mustard seeds.

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