Koch Media has announced that it's releasing software for the Nintendo DS that'll function as a "Gardening Guide", approved by the Royal Horticultural Society.
The company says that it's "more of a guide than a game", and allows you to either plan a real garden, or simulate a garden if you're stuck in a 40-year waiting list for an allotment in North London. It has an encyclopaedia of over 400 plants commonly grown in the UK.