Are you on Android? RS works a little differently on Android. There are different versions on the Play Store, and each of them have a few content items you wouldn't be able to get unless you download that version.
For example, the hedges are included in the 'Restaurant Story: Outdoors' version, and the tubers are in the 'Restaurant Story: Summer Camp' version. I can't post outside links here, but you should be able to search them on Google Play and download them.
I'd actually recommend DL'ing as many RS versions as possible, because all of them will have some items you'd otherwise not be able to see in your market. DL them once, open the game, and then uninstalling it is enough for the items to appear in your market in any version you DL afterward.
Hope that helped