Only a few types of trees have spherical, prickly seed pods, so here's how to identify ... These distinctive fruits can help narrow down the plant you're curious about because there are only ...

Purple needlegrass is a popular native grass for small gardens or open meadows, but its long prickly awns can be a nuisance ...

The target of this raid is an unwelcome, spiky invader with the potential to turn an entire landscape into a prickly wasteland ... Each plant can produce up to 100,000 seeds.