Friends
Have you thought about setting up YouTube and Picasa accounts (or equivalent) for the garden?
I have found that photos and videos can serve as an invaluable record of gardens that both convey much more information than words (picture=1,000 words) and can be taken so easily - with effortless recording of date and time - and location if you have a gis-enabled camera.
Over time, the photo & video collection can also provide valuable data on how the garden is changing and evolving - including variations that may be attributable to from climate change - e.g. changing dates of indications of spring - as well as a record of vegetation & botanical information and capturing garden highlights
Btw, you might also want to capture and save screen shots of satellite and street views of the garden - the most recent satellite views from Google Maps are provide significantly better resolution than the previous set - and provide a surprising amount of detail. Btw, I just took a look at your garden on Google Maps and look forward to seeing how you are able to progressively transform it
Meanwhile, my best wishes for a wonderful and productive time
Robert Pollard