Is there a way to add previous years' gardens?? I was an original beta user who got a little frustrated, but I'm back now, and would like to add my previous years layouts to the database, and am not seeing a way to do this easily, as it all comes up with 2011, and I can't seem to save the gardens in the year they were planted.

Yes you can do this.
You need to start by using Options -> Load Garden.
Pick the year you want to start with.
Place all your vegetables and then use transfer to new year to move to the next year (Options -> Transfer to New Year
Please know that Transfer to new year deletes any vegetables what were in the year you are transferring to.
Then click Load Garden and select the new year.
If you have a complex layout that you want to move to a start year, please let us know and we can move that for you.