Hi all, I have no experience growing P. ternata or P. pedatisecta, but was warned about P. ternata by Tony Avent, so have avoided it. The only one I grow is P. tripartita and it self sows, but the seedlings sprout right under the parent and are not hard to remove if no more are desired, so it has not become a problem. Four-o'clock (Mirabilis jalapa) could be considered a geophyte and self sows like mad. It also turns out to be root hardy here, something I did not expect, so has some invasive potential in this climate. If we agree that it is a geophyte I would be glad to post photos of this plant to the wiki. Regards, Jay Yourch Central North Carolina, United States (USDA Zone 7)