lower paxton township ordinances noxious weeds

īotanical gardens play an essential role in the observation and study of plants. Botanical and collection gardens are often leaders in the introduction of new plant species for public green or garden use their recommendation, introduction, and commercialization require scientific soundness and professional responsibility. They can limit the growth, reduce the habitat, and result in amorphous, asymmetrical growth due to fight for light or reduced water or nutrient uptake in a divided root zone. Plants appearing in undesirable places and conditions may cause problems for residents and maintainers with their constant pressure on the existing vegetation. The priority tasks for the maintenance of urban green spaces include the removal of spontaneous weeds or invasive species. Taking the total number of individuals into account, we found that, in addition to the 2653 woody species planted, a further 7087 spontaneously emerged weeds developed, which creates an additional task in the maintenance.

During our studies, we observed the spontaneous spreading of 114 woody species, of which 38 are native and 76 are non-native. We investigated the correlation between spontaneously settling and planted individuals, and then performed multivariate analyses for native and non-native spreading plants for spatial and quantitative data.

In our study, we evaluated the native and non-native species involved in spontaneous spreading in the institutional garden of Buda Arboretum (Budapest) during the COVID-19 period in 2020–2021 when entry was prohibited, and maintenance went on in a restricted, minimal level. However, among the planted taxa, there are species that spread spontaneously and appear as weeds in extensively managed gardens. A similar process can occur within the artificial urban environment as the hitherto popularly planted urban trees may suffer from the extremities of the urban climate. Some species could disappear from their natural habitats and become endangered, while others could adapt well to the changed environmental conditions and continue to survive successfully or even proliferate more easily. Climate change may strongly modify the habitat conditions for many woody plant species.

Lower paxton township ordinances noxious weeds