我在花园里种了一些蓍草，它们粉色的花簇看起来很迷人。

I planted some ___milfoil in my garden, and their clusters of pink flowers look charming.

池塘里的狐尾藻生长得太快，影响了其他水生植物的生存。

The pond's ___milfoil grew too quickly, threatening other aquatic plants.