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Gray vervain thrives best in well-draining soil with regular watering, although it is drought-tolerant once established. It requires full sun exposure to flourish and produce its characteristic blossoms. A notable special care point for gray vervain is the occasional need for deadheading to encourage continued blooming and prevent self-seeding if spreading is not desired.
Watering schedule: Every week
Sunlight Requirements: Full sun
Common issues for Gray vervain based on 10 million real cases