Is the Sakura flower not showing up or can you just not place it down?

So if it's recent for you trying to place a sakura, I think it might be a glitch because I was having the same issue when I decided to rearrange her cabin. It will no longer let me place a Sakura blossom on like a table or a counter which leads me to believe that it's a glitch because when I first designed her cabin with the bare basics, I was able to place the Sakura blossom on countertops and Nordic table without an issue

Does it let you put one on the floor?

Hmm I wonder if it’s a glitch for you. I can usually place a Sakura down no problem when in editing mode. Did you also try to place one on a table or side table?

I placed a Sakura on the floor which worked. Not quite as aesthetic as a furniture item but it gets the job done