Last year I harvested the seeds from the two moonflowers vines I had growing. I took the seeds out of the pods after they dried and before they opened up. This year I carefully planted a lot of moonflower seeds where I need vines with morning glories as backups. Not one moonflower seed sprouted. The only seed I got going by myself is one that had been soaking and sprouted on a paper towel and then I planted it.
So it's late June and these things are now popping up in places I have absolutely no idea how they got there. The first one sprouted in a hanging basket that I put together requiring me to transplant it. Then another one popped up right next to where I transplanted that moonflower in the same container. And just yesterday I found one pop up in a completely different area of the garden far from last year's vines in a massive container that didn't come in contact with any recycled soil from last year. I'm totally perplexed. How can you plan a garden if the vines don't cooperate and sprout where you want them?