Petasites hybridus, the butterbur, is a herbaceous perennial flowering plant in the family Asteraceae, native to Europe and northern Asia. Introduced to North America for its medicinal uses. Shown to be effective in reducing the severity of migraine headaches. Seeds collected from last season are viable and suitable for planting. Buy 3 or more seeds orders and you will get double amount of the smallest seeds for free! Free international shipping (Europe1 week delivery, Rest 2-4 weeks delivery, NO TRACKING!). Expedited international shipping with tracking number (1-2 weeks delivery). Tracking number will be upload 24h after postage. Feedback We will do everything for your satisfaction. When you receive your purchase, please take a moment to leave us a positive feedback. If there was something unsatisfactory about your purchase, please email us through before leaving feedback and we'll do what's necessary to solve the problem and ensure your satisfaction! Thank you! Attention: Buyers are responsible for their countries' custom laws. We ,as seller, have no responsibility, to possible prohibition laws of buyer's country.