Sisyrinchium rosulatum

yellow blue-eyed-grass, annual blueeyed grass, annual blue-eyed grass
Family

Iridaceae

Leaf Arrangement

alternate

Leaf Margin

entire

Leaf Type

simple

Leaf Shape

linear

Growth Form

forb

Flower Color

orange, yellow

Flower Month

April - June

Height (meters)

0.0 - 0.4

Milky Sap

No

Armed/Unarmed

Unarmed

Origin

introduced

Lifespan

annual, perennial

Growing Season

Cool season


Wetland Class

FAC

Prairie Coefficient of Conservatism

-1

Field Characters

Flowers not blue; they're yellow.

Cultural Information

Propagation is best from seeds. Collect the capsules when they become wrinkled but before they fall from the plant. The capsules should dried then crushed to release the seeds. Fresh seed should be planted in fall (in cool soil). Cold/moist stratification (90 days at 33-40 degrees F) improves germination (Phillips 1985, Steffen 1997). There are about 7,568,000 seeds/lb and the recommended planting rate is 0.5 lbs/acre. Seedlings are easily transplanted. Clumps may be divided in early spring but require moist conditions (Phillips 1985).

Natural History

Found generally in sandy soils, in lawns, roadsides and old fields along the gulf coast from southeast Texas to Florida. It is native to South America.

Habitat

Lawns, meadows, roadsides, old fields.