臭椿 Tree-of-Heaven

[lostsoul]

生命力非常强，也是臭名昭著的入侵物种。

[lostsoul]

树枝劈开后，中心结构是泡沫状，非常不结实。不知道成年大树的中心什么时候开始硬化的。

生命力非常强，一小段根没除净，第二年就能再发芽。继续严防死守，不让它死灰复燃。

https://extension.psu.edu/tree-of-heaven

The tree was initially valued as a unique, fast-growing ornamental shade tree with the ability to grow on a wide range of site conditions, tolerating poor soils and air quality.

It was widely planted from New York City to Washington, D.C. By the early 1900s, the tree began losing popularity due to its "weedy" nature, prolific root sprouting, and foul odor.

Tree-of-heaven has spread and become a common invasive plant in urban, agricultural, and forested areas.

[lostsoul]

它的树叶和 black walnut 有点像

This species is easily confused with some of our native trees that have compound leaves and numerous leaflets, such as staghorn sumac, black walnut, and hickory. The leaflet edges of these native trees all have teeth, called serrations, while those of tree-of-heaven are smooth. The foul odor produced by the crushed foliage and broken twigs is also unique to tree-of-heaven.

[StillWandering]

生命力非常强，也是臭名昭著的入侵物种。

很有意思，我们费心种植植物，却把这些自己就能生长的入侵植物去除掉

[lostsoul]

生命力非常强，也是臭名昭著的入侵物种。

很有意思，我们费心种植植物，却把这些自己就能生长的入侵植物去除掉

对植物界的非法移民，一定不能心慈手软

[StillWandering]

很有意思，我们费心种植植物，却把这些自己就能生长的入侵植物去除掉

对植物界的非法移民，一定不能心慈手软

全砍掉了，没经允许就生长

[牛大春]

臭椿秋天叶子是红的，挺好看。不过生长确实太快，需要控制。

生命力非常强，也是臭名昭著的入侵物种。