plant:Purple loosestrife is a beautiful
purple flower that is often used in flower gardens and commercial
landscaping. It is also grown in nurseries for flower arrangements.
weed: As a weed, purple loosestrife
invades wetlands and riparian areas. It forms thick stands that
can choke out other plants that are required by native wildlife
for food and shelter. These thick stands can also close off water
channels and open waterways.