In FarmVille 2 there are a lot of patches of land to expand your farm. Most of them have requirements in which you need to meet before you can use these patches of land. You can have already unlocked a patch that is located directly adjacent to the new patch of land before you can unlock it as well. The F1 through F4 patches do require that you be at least level 35 in order to see their requirements.
In addition, the new coin expansions should become visible to players who have reached level 24 and higher. The new River Patch expansions become available to players who reach level 11 or higher. The patch that are farther away from your farm's starting location will have a much higher coin costs for each patch.
Many patches will require that you ask your Neighbors for specific items in order to unlock the patch. This can be done before the other requirements are met and as soon as you have unlocked land adjacent to to the patch of land.
Once you reach level ?25 - 31?, you will be able to access the Gourmet farm expansions.
These expansion are only for the Main farm.