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Hardiness: USDA Zone 3b: to -37.2 °C (-35 °F) USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F)
Other details: May be a noxious weed or invasive This plant is attractive to bees, butterflies and/or birds Average Water Needs; Water regularly; do not overwater
On Nov 3, 2007, distantkin from Saint Cloud, MN (Zone 4b) wrote:
Considered invasive by the MN DNR
From their website....
"Ecological Threat:
Birdsfoot trefoil forms dense mats choking and shading out most other vegetation.
It grows best in the Midwest and is most problematic in prairies and disturbed open areas, such as roadsides.
Prescribed burns increase seed germination making it troublesome in native prairies.
This European species has been introduced to the U.S. and Canada for livestock forage and erosion control along roadsides. It is still sold commercially. "
On Jul 7, 2005, kbaumle from Northwest, OH (Zone 5b) wrote:
This is in bloom EVERYWHERE here now. It attracts attention by the side of the road, and we see it when we go bike riding. I want to dig up a cluster of it for my Ohio wildflower garden.
On Oct 13, 2004, Kim_M from Hamburg, PA (Zone 6b) wrote:
I grew this from seed this year. Each one of my plants are currently 3 feet wide. It didn't flower much or produce seeds. So hopefully more flowers next season.
On Mar 23, 2003, kennedyh from Churchill, Victoria Australia (Zone 10a) wrote:
The name Birdsfoot Trefoil for this plant is because the group of seed pods can resemble a birds foot. Although the flowers occur in groups of about 7, not all develop seed pods and there are frequently three slender pods joined at their base, resembling a bird's foot, with three long toes.
Has lance shaped, hairy or hairless, mid-dark green leaflets borne in 5s, the upper 3 leaflets are separated from the lower 2 by short stems. Bears small, pea shaped, yellow to reddish yellow flowers which become darker with age. The seed pods are shiny, lance shaped and black when ripe.
Flowers April - September
Likes a well drained soil in full sun.
This chap can become invasive and will escape into the wild from the garden, so be careful of introducing it to the garden especially where no other L. corniculatus are present.
Regional...
This plant has been said to grow in the following regions:
Knights Landing, California Scotia, California Derby, Kansas Cumberland, Maryland Oakland, Maryland Halifax, Massachusetts Erie, Michigan Unionville, Michigan Isle, Minnesota Saint Paul, Minnesota Elizabeth City, North Carolina Glouster, Ohio Haviland, Ohio Hilliard, Ohio Bartlesville, Oklahoma Salem, Oregon Millersburg, Pennsylvania Kalama, Washington