
These are daylilies (thanks for identifying, bingbing!)I picked from the roadside...

They close during nighttime.

So this morning I got out very early to go to the site (about 2 houses away from ours) and dig out some of them and transplant them into my flower garden. Taraaaa!

UPDATE as of Jul 16: I noticed that the flowers did not open the next day; instead, it continued to wilt, while the other flowers in the bunch slowly opened and bloomed on the 2nd day after the first set. Maybe that was the reason for its name.