Itchy, prickly weed
I have a tall, itchy, prickly weed that is multiplying like crazy in a side garden. It's been raining here most of the last month, so my weeding is way behind...so some are up to 4 feet tall. It grows quickly on a tall stem, has multiple-pointed leaves on the top half, has tiny thorns on the stems and leaves, blooms light purple flowers with some white and yellow on them too. It hurts to pull it, and itches if it touches your skin.
I was hoping to google to find a way to finally get rid of this stuff, but haven't been able to find out exactly what it may be yet.
Many thanks in advance, if anyone has a thought about it!