鼠李属植物是非本地物种, highly invasive woody plant that ranges in size from a shrub to a small tree, 高达22英尺. The name is attributed to the woody spine on the end of each twig in many species. 两种鼠李，普通鼠李(鼠李cathartica)及鼠李草(鼠李frangula), 现在几乎占据了我们在中西部居住的每一个角落, 从自然区域到我们自己的后院.
Common buckthorn is found in uplands where it is dry while glossy buckthorn tends to occur more often in wet areas. 这两种沙棘出现在各种各样的栖息地, 耐寒耐旱, 并通过种子迅速传播. 常见鼠李叶 are sharp and pointed and have somewhat finely rounded teeth. 光滑的鼠李叶 are shiny on the upper surface, oval and slightly wavy. An easy way to identify buckthorn is that it is one of the first trees to leaf out in the spring as well as the last to lose its leaves into the winter well after our native shrubs and trees have dropped their leaves.
树就是树，所有绿色的东西都是好的，对吧? 害怕不. 鼠李是不好的. 非常糟糕的. 它入侵自然区域，形成茂密的灌木丛, 这使得本地物种的生长和生存变得非常困难. Because buckthorn leafs out very early in the growing season and keeps its leaves late into the fall native trees, 灌木和野花被遮蔽，因此很难生长. 在我们地区特别受到关注, buckthorn prevents the growth of young oaks and hickories which once dominated our landscapes but are now declining at rapid rates.
林地夹竹桃, 宾夕法尼亚莎草 and White Oak saplings are just a small sampling of native plants that struggle to survive in a buckthorn-dominated landscape.
Buckthorn is a prolific berry-producer and seeds are widely dispersed by birds. 然而, buckthorn berries have poor nutritional value for birds due to the laxative effect that the berries have on them. Buckthorn also produces chemicals that change the properties of the soil where it grows, making the soil toxic to creatures like the blue-spotted salamander and other amphibians. Finally, buckthorn leaves break down very rapidly, exposing bare soils which leads to erosion. Not to mention the bare soil provides the perfect opportunity for even more buckthorn to grow!
皇冠官方app下载 is deeply committed to our role in making our local environments healthier and we are thrilled when people ask us to remove their buckthorn! 拔鼠李的方法很多, 这取决于树的大小, 鼠李属植物的数量和位置.
对沙棘幼树叶片施用除草剂可以控制其生长. Since buckthorn leafs out earlier than native species and stays green well after native trees and shrubs go dormant, our certified pesticide applicators target buckthorn saplings in the spring and fall when natives are not present. Factors considered when selecting an herbicide for use on a particular site include proximity to water or wetlands and the presence or absence of desirable native vegetation.
较大的鼠李树在靠近地面的地方用链锯切开. 为了防止火灾, certified pesticide applicators need to apply herbicide to the stump immediately after cutting. The best time to cut buckthorn and herbicide the stump is in the winter when desirable plants are dormant. Disposal methods of the cut material include chipping the material and hauling it off site or burning the material in brush piles.
The most economic approach to removing dense thickets of buckthorn is to use a forestry mower. Forestry mowers can consume buckthorn trees up to 6-inches in diameter and shred the trees into coarse mulch. 因为割草机被认为是重型设备, we wait until winter when there is frozen ground to prevent soil compaction and rutting. Another option is to mount a mower head on our low ground-pressure amphibious equipment in scenarios where the ground stays wet (wetlands) or in areas where the soil is loose and never fully freezes. Stumps need to be treated with herbicide to prevent or minimize resprouts in the spring. A water-based herbicide can be utilized immediately after mowing and an oil-based herbicide can be used some time after stumps are cut if heavy snow delays stump treatment. This oil-based herbicide cannot be used in wet areas, however, as it will travel through the water. In this case, stumps need to be treated with an aquatic-approved herbicide to prevent resprouts.
Buckthorn seedlings are vulnerable to fire due to their immature root structure. Using prescribed fire as a control method is an option to prevent seedlings from growing into trees in more established natural areas. The success of fire as a buckthorn management tool is dependent on achieving high heat, 这取决于有多少燃料来生火. Prescribed fire is most successful in settings with high fuels such as prairies as well as woodlands dominated by Oak and Hickory trees. Tall prairie grasses or thick leaf litter create the intense heat needed to control buckthorn saplings.
People are sometimes resistant to removing buckthorn since it provides great privacy screening. There are excellent native replacement options that offer privacy with the added benefit of providing the ecological diversity that supports healthy ecosystems. Healthy ecosystems are important for not just wildlife, but for people, too!
Here are a few native privacy screening replacement options that are more readily available from local nurseries.