Magic Garden is an artificial plants laboratory. You can create L-System plants and modify them in real time. There are plans to add OpenGL support, animations, and some kind of garden editor.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
This release has moved from Tkinter to wxPython. Plants are now editable with sliders and updated in real time. Results can be rendered into PNG. Some examples have been added.