I just happened to be making up seed labels from my only Delphinium. (D. elatum "Pacific Giant"). I got 6 teaspoons of seed from one 6' plant!
Some source said these would be short-lived Perennials in cold climates (only a few years in Zone 2), but would last 5 or more years in Zone 7 and warmer.
I'm in Zone 8, but I'll be keeping my eyes open for reseeding, and divide if it doesn't re-seed successfully. My slugs seem to have identified young Delphiniums as their favorite food ever.
