Blue Vervain Seed

Verbena hastata


Verbena hastata

Upright yet creeping, self-seeding herbaceous perennial native to the Eastern US. Bright blue flowers on reddish-tinted plants, in multiple, long-lasting, handsome spikes.  Fresh or dried leaf is the part used.  Traditional usage: indigestion, colds, and fevers.


Care Information


7-14 days.

Days to Maturity

80 days


Stratification: Sow outdoors in the early spring or give 2 weeks cold conditioning by putting seeds in moist medium in a plastic bag in the fridge (not freezer) and then sow in warm soil.  Barely cover and tamp.
Transplant (recommended): Tamp seeds into the soil mix or just barely cover with soil. When transplanting, place seedlings 6-12″ apart in rows 24-36″ apart.
Direct seed: Sow shallowly, 1/4″ deep, one seed per inch in spring. Thin to 6-12″ apart.

Soil Requirements

Well-drained soil containing good fertility and organic matter.

Light Preference

Prefers Full Sun (6 hours of direct light or more), can tolerate Partial Shade (3-6 hours)

Plant Spacing


Hardiness Zones

Zones 3 – 9


Medicinal: The medicinal properties of blue vervain are at their peak when the plant begins to flower in mid to late summer. Harvest both leaf and flower by using a field knife to cut the entire aerial parts of the plant, leaving twelve inches at the base for regenerative growth. Blue vervain is easy to over dry, degrading its medicinal properties. Dry at 90 – 95 Degrees F in a single layer to improve airflow – allow 48 hours to dry.


Flowers and leaves are used internally as a tea, tincture, or flower essence. They can also be used topically in ointments, oils, and salves.
For more information on this herb, explore our farm library

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