How do I save Tithonia rotundifolia seeds?
I want to save some Tithonia rotundifolia seeds and ensure that they have not been cross pollinated. I have 10 plants. Thank you!
Shasta County California
Thank you for your question. There is not a lot of Extension information on this. Here is the only resource I can find: https://wimastergardener.org/article/mexican-sunflower-tithonia-rotundifolia/ Your county Extension office may have more: http://ceshasta.ucanr.edu/ Good luck!