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Basal bark application of Garlon 4'(University of Minnesota Extension Service 1999) is <br /> another option for a chemical application. To prevent dense re-infestations we advise <br /> careful monitoring of the site every 1-2 years. Upon the discovery of newly established <br /> plants it is recommended that the newly emerged plants be pulled out of the ground, <br /> including the roots, immediately. There are specialized weed pullers to facilitate pulling <br /> larger plants. Pulling is the preferred option when there are localized infestations of small <br /> plants;thorough monitoring should ensure early detection of newly emerged seedlings. <br /> During the buckthorn removal process it is important that soil disturbance is kept to a <br /> minimum and that already established native ground cover species are kept intact. By <br /> reducing this disturbance,rejuvenation of native plant species will increase and soil erosion <br /> will be kept to a minimum. On some sites, planting may not be required. Instead of <br /> planting, wait 2-3 years watching for natives to return from roots or seed. If a herb layer <br /> does not return after 1-2 years, lay down a layer of mulch with wood chips or leaves to <br /> assist with native germination. Under-story clear-cutting is not suggested and should be <br /> avoided as an option for buckthorn removal. This activity encourages herbaceous invaders <br /> such as garlic mustard(Alliaria petiolata) and giant knotweed(Polygonum sachalinense) <br /> to take root in these disturbed areas. <br /> If the removal of buckthorn results in an extensive denudation of the area,the option for <br /> allowing the buckthorn to remain exists at the discretion of the City. <br /> SCHEDULE OF ACTIVITIES FOR BUCKTHORN <br /> Year 1 <br /> Removal and Chemical Application: Flag buckthorn(if necessary). Cut buckthorn <br /> throughout the buffer areas. Treat stumps with chosen herbicide and corresponding <br /> methodology specific to the herbicide. <br /> Planting (Optional): Augment with native shrubs (3-4 different species, 2 to 3 per <br /> cluster or dispersed),trees,and herbaceous plants. Add mulch around each newly installed <br /> plant— about 1 foot radius. Protect young shrubs from browsing deer, rabbits, etc. using <br /> protective structures. Planting should occur in late spring or early summer to ensure <br /> successful establishment. On some sites,planting may not be required. Instead, wait 2-3 <br /> years to watch for natives to return from dormant roots or seed. <br /> Year 2 <br /> Monitor new plantings and maintain protective structures. Check area for <br /> buckthorn infestations as well as other invasive species such as tartarian honeysuckle <br /> (Lonicera tartarica) and burdock (Arctium minus). Spot treat invasive vegetation that <br /> emerges with recommended herbicide described in the procedure for Year 1. <br /> Year 3 <br /> Verify that the area is still dominated or becoming dominated by native species. <br /> Repeat procedure described for Year 2 for eradicating invasive vegetation. If native <br /> 16-19986 Franzel Addition-800 North Arm Dr. <br /> Vegetation Management Plan <br />