Verbena stricta (Hoary Vervain)
|Also known as:||Hoary Verbena|
|Habitat:||sun; dry; fields, prairies, roadsides|
|Bloom season:||June - September|
|Plant height:||1 to 3 feet|
|Wetland Indicator Status:||none|
|MN county distribution (click map to enlarge):|
|National distribution (click map to enlarge):|
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Densely packed spike clusters of ½-inch purple to blue-violet flowers, sometimes rose pink or white. Flowers have 5 petals fused at the base forming a short tube. The petal lobes are slightly unequal in size, the 2 lateral lobes largest and the lower lobe notched at the tip. Hidden inside the tube are 4 stamens and a short style. The spike elongates as the plant matures with flowers blooming from the bottom up and fruit forming below.
Leaves and stem:
Leaves are opposite, nearly erect to spreading, 2 to 3 inches long, oval to egg-shaped, pointed at the tip, coarsely toothed, covered with dense hairs, and stalkless. Stems are square, short-hairy, and may be a reddish color.
Hoary Vervain tends to grow in clumps. It might be confused with Blue Vervain (Verbena hastata), which has smaller flowers, stalked leaves that are longer and proportionately much narrower, and prefers moist habitats.
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- Hoary Vervain plants
- Hoary Vervain habitat
- garden-grown Hoary Vervain
- Hoary Vervain in winter
- Hoary Vervain with white flowers
- more leaves
Photos by K. Chayka taken at Wild River State Park, Chisago County, and in Ramsey County. Other photos courtesy Peter M. Dziuk.
Have you seen this plant in Minnesota, or have any other comments about it?