Blue vervain (Verbena hastata)
Care, watering, light and tips for Blue vervain on Floravia.
Quick facts
- Family: Verbenaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Blue vervain
Verbena hastata, also known as blue vervain or swamp verbena, is a striking perennial native to North America. It features tall, slender spikes of small, violet-blue flowers that bloom from mid-summer to early autumn, attracting pollinators. It is ideal for rain gardens, moist borders, or as part of a wildflower meadow, providing attractive vertical structure.
Native range
North America (United States and Canada)
Care tips
It prefers full sun for optimal flowering, though it can tolerate some partial shade. It requires consistently moist but well-drained soil; it does not tolerate prolonged drought. This is a hardy plant that does not require much fertilization. A common mistake is planting it in dry soils, which will limit its growth and flowering.
How to save a dying Blue vervain
- Warning signs
- Wilted, yellowing, or dry-edged leaves; no blooms; soft stems.
- First aid
- Check watering: if dry, water deeply; if waterlogged, improve drainage. Deadhead spent flowers.
- What kills it
- Overwatering and poor drainage leading to root rot. Also extreme drought or lack of sun.
- Can it be saved?
- Yes, if roots aren't completely rotted and conditions are corrected.