Verbena hastata

Verbena hastata subsp. var.	American Blue Vervain, Blue Vervain, Swamp Verbena
	Habit: [[Category:]] Height: ⇕ to Width: ⇔ to cm1.5m .6m Height: ⇕ cm to 1.5 m Width: ⇔ warning.png"" cannot be used as a page name in this wiki. to .6 m Lifespan: ⌛ Origin: ✈ N. America Poisonous: ☠ Bloom: ❀	Exposure: ☼ Water: ◍ Features: ✓ Hidden fields, interally pass variables to right place Minimum Temp: ☃ -20°C253.15 K -4 °F 455.67 °R USDA Zones: 3 to Sunset Zones: Flower features: ❀
	Verbenaceae > Verbena hastata var. ,

Verbena hastata (Blue Vervain or Swamp Verbena) is a flowering plant in the vervain family, Verbenaceae. It is a herb with opposite, simple leaves which have double-serate margins, borne on stiffly erect, branching square stems. The flowers appear in summer and are purple.

Cultivation

Succeeds in any moderately fertile well-drained but moisture retentive soil in a sunny position^{1 RH}. Plants are hardy to about -20°c¹⁸⁷.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil^pf. The plant prefers acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It requires moist soil^pf.

Propagation

Seed - sow early spring in a greenhouse or cold frame and only just cover the seed¹. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer. Division in spring. Larger divisions can be planted out direct into their permanent positions. We have found that it is best to pot up smaller divisions and grow them on in light shade in a greenhouse or cold frame until they are growing away well. Plant them out in the summer or the following spring. Basal cuttings in early summer. Harvest the shoots with plenty of underground stem when they are about 8 - 10cm above the ground. Pot them up into individual pots and keep them in light shade in a cold frame or greenhouse until they are rooting well. Plant them out in the summer^pf.

Gallery

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963
• http://www.pfaf.org/database/plants.php?Verbena+hastata

External links

• w:Verbena hastata. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
• Verbena hastata QR Code (Size 50, 100, 200, 500)