Leanne Wijnsma is documenting her 484m² garden 1:1 using a flatbed scanner

Amazing. Would be nice to have a detailed view of the scanner setup she is using.

Unrelated: what's with Google Maps loading in the background?

That's for the about-bar, on the bottom. You can click on it. There's Google Maps there to illustrate where the garden is located.

The bottom of the page slides in with some details including this image showing her doing the scanning - http://leannewijnsma.nl/refresh/7/about.jpg.

It would be nice to see a WMS (google style webmap service) of this. She should try Geoserver. Before they will appear in the right places, she will need to geostamp them. GDAL is a great way to do this.

I'm really hoping Leanne doesn't have a pond.

I think she needs some sort of enclosure (with skirts?) that gives a minimal footprint and doesn't squash the grass flat.

The point of focus for a flatbed scanner is the scanning bed itself. As objects move away from this plane, they don't scan nearly as well.

I think I paid $400 for my first 600dpi scanner, which was awesome for a flatbed back in the day. I scanned all sorts of things with it. Especially PCBs. If the object I was scanning wasn't perfectly flat on the glass, the results were terrible.