I found these two spiders while mowing today. Anyone know what kind and are they poisonous?

Also notice the wasp nest behind them.

Orb weavers and they aren't poisonous.Some people call them banana spiders or garden spiders.They will get to huge sizes by late august.Someone else here will comment on the correct name Im sure.Thay are good spiders but I hate getting caught up in their web.

Grew up in the South. They were not uncommon in South Georgia.

I've always called them Garden Spiders. They are not venomous. They do get big and creepy, but I've never heard of anyone ever being bitten by one. Even when they get caught up in their web like David mentioned. Very beneficial spiders.

I have one or two every year that setup shop right above a beehive. They know where the easy pickens are. We always have a few around and my kids love feeding them by throwing a grasshopper in their web.

As previously stated these are a type of orb weaver. The general population usually calls them Garden spider and Banana spider. They get a body size about the size of a quarter is medium sized legs. They are not aggressive and non venomous. I have held several specimen and never been bit.

Argiope aurantia, with the common names of garden spider, yellow garden spider, and assorted other names. Those are two females, males are much smaller and shaped differently.

They have venom, like most spiders do, but won't bite you unless you pick one up and really try to make it mad. Later in the summer look for an egg sac off to the side of the web, it'll be round and can be as big as a golf ball.

Venomous in the sense that they can bite. Its not lethal. Just as ants, all spiders, wasp and bees are "venomous".

I got popped by one walking next to a tree at night. My hand probably hit the web right next to it. It drew blood but didn't hurt. I have them all over my yard.

I came across this one a while back. I'm guessing it's the same kind...?

Yes, the same species.