Sprenger's Asparagus...

This plant grew all by itself... Don't know how it's seed got there to grow in the first place... In the beginning I didn't know what it was then as it started to get bigger my friend told me what it was and to be careful as it has spikes... I don't particularly what it so I'm going to dig it out and pot it and take it to the Exchange and hopefully someone will give it a home... It has mixed reviews... ornamental plant or invasive weed... What's your thoughts...