Posted by The San Francisco Dog Walker
Maybe you have seen this plant at a San Francisco dog park? . . . I took these pictures at Stern Grove.
I was told by a former San Francisco city parks gardener that this plant is called Hemlock and is very poisonous to dogs!
What makes it particularly troubling is that is grows in abundance and it grows next to that tasty grass your dog loves.
If you see this plant, keep your dog away!