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PlantFiles: Lesser Yellow Trefoil, Shamrock, Lesser Trefoil, Least Hop Clover, Suckling Clover
Trifolium dubium

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Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Trifolium (try-FOH-lee-um) (Info)
Species: dubium (DOO-bee-um) (Info)

One member has or wants this plant for trade.

Category:
Annuals
Groundcovers

Height:
under 6 in. (15 cm)

Spacing:
12-15 in. (30-38 cm)

Hardiness:
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)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
N/A

Bloom Color:
Pale Yellow

Bloom Time:
Mid Spring
Late Spring/Early Summer

Foliage:
Herbaceous
Smooth-Textured

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost

Seed Collecting:
Collect seedhead/pod when flowers fade; allow to dry
Allow seedheads to dry on plants; remove and collect seeds

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Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral frostweed On Nov 17, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Lesser Yellow Trefoil, Shamrock, Lesser Trefoil, Least Hop clover, Trifolium dubium, is Naturalized in Texas and other States and is considered an invasive plant in Texas.



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