The latest update to Garden Planner (version 3.4.17) adds the start of non-English language support to Garden Planner. If you choose Languages from the Help menu you can choose from a number of languages.
However at this point this only translates the names of all the plants and objects (including the vegetables and herbs). All interface items are still in English.
Why only translate part of the software? The plan is to have the software full translated eventually, but that is a difficult and time consuming process and this much translation could be done very quickly. I thought it was probably more useful to have some translation now and provide more later rather than making everyone wait.
Also, a number of users had said that while they could read English they were creating plans for people who didn’t speak English, and so having all the objects in their native language would save them a lot of time.
The current languages supported are Danish, Dutch, French, German, Greek, Italian, Portuguese, Spanish and Swedish. These were picked simply because people had requested them. If you want to see other languages added just let me know.