Weeds > Alliaria > Alliaria petiolata > Alliaria petiolata
Alliaria petiolata
Garlic Mustard
Origin: Native to northwestern Africa, western and central Asia, and Europe.
Mike's
Opinion
"
A biennial invasive plant that is rapidly becoming a problem in woodland areas where it out-competes native flora. Purported to be alleopathic.
Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)
"
| Family |
| Brassicaceae |
| Genus |
| Alliaria |
| Species |
| petiolata |
| Category |
| Weeds |
| Synonyms |
| Alliaria officinalis |
| USDA Hardiness Zone |
| 1a - 6a |
| Canadian Hardiness Zone |
| 0a - 5b |
| RHS Hardiness Zone |
| H7 |
| Temperature (°C) |
| -51 - (-21) |
| Temperature (°F) |
| -60 - (-5) |
| Height |
| 30 - 100 cm |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| Growth |
| Fast |
| Leaf Description |
| The leaves are stalked, triangular to heart-shaped, 10-15 cm long (of which about half being the petiole) and 5-9 cm broad, with a coarsely toothed margin. |
| Flower Description |
| The flowers are produced in spring and summer in button-like clusters. Each small flower has four white petals 4-8 mm long and 2-3 mm broad, arranged in a cross shape. |
| Fruit Description |
| The fruit is an erect, slender, four-sided pod 4-5 cm long, called a silique, green maturing pale grey-brown, containing two rows of small shiny black seeds which are released when the pod splits open. |
| Notable Specimens |
| Joany’s Woods, West Williams, Middlesex County, Ontario, Canada. |
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