All ISCBC publications and products are downloadable from our website free of charge. You may also purchase hard copies, based on available inventory, from the ISCBC office. Prices shown do not include shipping or GST, and recover basic printing costs. Please contact the ISC office at 1-888-933-3722 to order hard copies.
- View file
This tap-rooted perennial herb from Europe prefers full sun and dry to medium wet conditions. It is self-seeding and colonizes quickly and considered very invasive. Often purchased as an ornamental, it easily escapes flower beds and infests landscapes. It is often spread by people giving or selling the plants, and improperly disposing of garden waste.