Is it too late to collect seed?
My friendly groundhog ate my Tithonia down to the ground at least half a dozen times this summer. He finally moved on and I actually got a few tithonia flowers in October. I left the spent flowers on the plants in hopes of letting the seed heads dry out. In the meantime, life got in the way and I never collected the seed heads. The ground is now covered in snow, the temps have steadily been below freezing (I'm in Boston MetroWest FWIW). Is it worth my while to trudge out back and collect those seed heads still on the plant? And plant them in Feb or March (when I sow my other annuals)? I can see seed heads thru my binoculars.