We had some info that was based on earlier info a bit earlier, so lets try this again. Appears this may be worldwide, and all the codes are the same for everyone. Any questions throw them on as comments. Remember you can't actually use the codes for about 3 hours and 40 Minutes from the Publish time of this post. Thanks Robert For helping with this post. And Make sure to share this with your friends if you think they may care.
So here we go:
Day One Code: "GEM", You get A well Huge Gem deco thing
Day Two Code "ELECTRIC" , Youu get an Electric Rose Flower Bed
Day Three Code:"ARCH", You get a Chrome Daisy Arch
Day Four Code: "MONSTER", You Get Monster Fuel
Day Five Code: "GARDEN", You Get a Gaga Garden Patch