NOT WANTED
Japanese Knotweed
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Japanese Knotweed is an incredibly vigorous plant that forms dense mounds six feet high or more. Once established, it is extraordinarily difficult to remove.
NOT WANTED
Invasive of the Month: Garlic Mustard (Alliaria Petiolata)
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Garlic mustard is a small green invasive plant with leaves that smell like garlic when crushed. It’s an unusual invasive because almost anyone, regardless of age, ability or tool readiness, can pull garlic mustard plants.
NOT WANTED
Invasive of the Month: Multiflora Rose (Rosa Multiflora)
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Multiflora Rose is an extremely vigorous shrub that is nearly impossible for humans to control because of its super-sharp thorns borne on long, arching branches that can grow six feet a year in every direction. It thrives best in full sun but persists in partial shade, in a wide range of soil, as long as it has adequate draining.
NOT WANTED
Oriental Bittersweet Celastrus orbiculatus
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Bittersweet is an extremely vigorous woody vine that can grow dozens of feet, smothering the tops of small trees, strangling them, and pulling them down, similar to the southern kudzu vine. In large mature trees, bittersweet can wrap around the trunk, climb 60 feet or more and follow branches out in search of sun.
NOT WANTED
Japanese Barberry Berberis thunbergii DC
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A dense bush 2 to 7 feet high, Japanese Barberry has spikey thorns every inch or so along each branch. Small leaves along the branches are green in spring and summer.
NOT WANTED
Purple Loosestrife
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Purple Loosestrife – Lythrum salicaria —is October’s Invasive of the Month. Here is how to identify it, and what to do about it.