What spider is this en is is poisonous
This is a garden spider, of the Argiope genus, it appears. Not dangerous to humans. Compare your spider to this info, maybe: http://www.biodiversityexplorer.org/arachnids/spiders/araneidae/argiope.htm
Hi, welcome to Spider ID. 🙂 Yes, I agree with the suggestion above, this appears to be a Banded Argiope (Argiope trifasciata).