How to pronounce“sumpweed”in English

This tendency is very noticeable with the lost crop sumpweed, which turns a slight purple color in the fall.

Here in North America, these are knotweed, sumpweed, little barley, maygrass, and pitseed goosefoot.

They used the well-trodden trails the giant bison made through the tall grasses to get around, and they would find sumpweed and other plants along their route.