Since you said they're growing where you previously had Larkspur growing, I'm pretty sure those are volunteer Larkspur plants that came up after your last crop reseeded themselves. They do reseed readily and yours look extremely healthy.
Name: Daisy I Reno, Nv (Zone 6b) Not all who wander are lost
They look like Larkspur.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
President: Orchid Society of Northern Nevada