Prepared by John Bakewell, Carlisle Arboriculture, for Carlisle Garden Club
1/12/09
Preamble; Historic land use – cultivated since Ice Age; Landscape is a huge garden – trees are just large plants; Subtractive gardening – weeding, crucial for Carlisle
Impact of invasive plants; biodiversity, forest succession, passive recreation
Philosophy; serenity, boundaries, strategy, fashion
Tools and Techniques
Mechanical; hand pulling, weed wrench, grubbing and winches, mowing (big)
Herbicide; stump treatments, basal bark, foliar spray, injection
Biological; insects
Biggest, current problems for Carlisle Uplands
Buckthorn, Bittersweet, Rose, Honeysuckle, Burning Bush, Barberry, Garlic Mustard, Poison Ivy
Emerging upland problems
Knotweed, Olive, Norway maple, Tree of Heaven, Black Locust, Porcelain berry, Bradford pear
Lowlands, current and emerging problems
Loosestrife, Phragmites (common reed), Yellow Iris, Water Chestnut, Swallowwort, Goutweed (Bishop’s weed)
Blueberry, Button Bush, Winterberry, Red cedar, Spicebush, River birch, Sugar and Red maples, Bayberry, Cattails, Sumac, Arrowwood, Arborvitae (White Cedar), Pepperbush, Hawthorn, Mountain laurel, Hornbeam, Hazelnut, Sweetgum, Witch hazel, Basswood, Black birch, Sassafras, Tupelo (Black gum), Ninebark
Recommendations
Protect pristine areas from pioneer invasive plants
Fight battles that can be won
Plant natives
Education
Gallery of Invasive Plants
Gallery of Native Plants
Coordinate focused volunteer programs