I just did this a few times and it seems to work.
If you have a flower board seedling and it’s not planted, you can recycle it. When you do, if you click the pikmin-view page and then on the pikmin button, there will be a new expedition… for another flower board seedling.
Lather, rinse, repeat. Tedious and I’m not sure it’s worth the effort. But it’s there, complete with heart animations saying the pikmin tiny-leveled due to the expedition.
A shame I missed this! Sounds like an amazing exploit. Seems like whenever you didn’t have a flower card seedling, the game generates an expedition to get one for you.
That’s exactly what it was. I’m wondering if they’ll have this same “feature” in the future.