Well I have good news about the item. If you plant in cement, did it up, there will hole on your cement. Do not plant any item in there that does not become a tree, the hole will remain. Plant a tree, assuming you picked a solid location, the tree will go.
PS: You do know that you can plant this glitched flower on the ground.
Also there is a rumor that Nintendo this accidently. Here are the two Nintendo related reasons:
1.) Some employee at Nintendo wanted to ruin Wi-Fi, so they put a glitched item.
2.) The more reasonable rumor, in my eyes, is that Nintendo wanted to send this, at the time, glitched-free rose, but accidently sent it to America. That then our game/ds tried to recode the "From" part and either it made a glitchy name, or omitted the "From" part all together, just leaving the "from."
Edit:
The reason has been found by a third-party support. Apparently, Nintendo forgot to do there homework and didn't as good anti-AR coding. Therefore when someone happened to hack to get the six monkeys exclusive to the Japanese version, (they are in the list of aniamls, but aren't at all able to move to your town for english players). Then that person managed to go on Wi-Fi, accidently sent over some side-effect glitches, which resulted to have a glitched item on the main Wi-Fi server. Thus, when logged on, a red rose was sent, with glitched names (Remember that AR was responisble for the board-buried item glitched name) and was also treated as an download. Nintendo didn't know about this until reported.
PS: Nintendo really has to stop with this Japan-exclusive stuff. It leads to more and more problems.
Here are the pictures of the Monkeys that were secret. I will point out a few unusual things:
http://www.animalxing.com/images/screenshots/ds/monkey5.jpg
The picture frames are always Blue or green for Villageres and lost cat pictures, but are never yellow. Those are reserved for special people (Nook/KK/Pascal)
http://www.aibohack.com/nds/acmap_monkey1.jpg
They are in english, plus the site that showed us their "work" admits that is AR doings. The also say it resulted in the Red Rose glitch