Are you permitted to post the same species in the same-ish location on different days? Yes. Technically you’d even be allowed to post one you just saw and then post another one you see a few minutes later. Would most people actually do that? No. A lot of us would find it redundant. However you’re having your own experience with nature in your yard and you can do it how you want!
Just a note, if you observe any of your garden plants that are human-planted, mark them “captive/cultivated” please.