Hi Michel,
Sorry I ignored you... I hadn't realised I had a reply! I will set notifications.
OK, I have had a go, far from ideal conditions, my kitchen window sill right next to the sink.
Using my D300S and Nikkor micro 55mm f/2.8, @ f/5/6, ISO800, in aperture priority, making an exposure every hour with the built in intervalometer. First night I got no images because I put the kitchen light out, it made about 125 exposures which according to my calculator was just over 5 days. That was on one fully charged battery.
I have an AC adaptor but it doesn't fit the D300S.
I need the D300S for a few days so the experiment will have to pause. I reviewed the exposures just now and it's very interesting. The leaves appear to be move with the light but perhaps more interesting is the slight growth of a second shoot and the soil activity, something appears to be burrowing in the soil and ejecting piles of apparently excreted, digested soil? There also seem to be lots of small white mites or similar trundling around like tiny ants. So for very little effort I seem to have created a small window on the nature in my kitchen.
Eventually I intend to create a small studio so I can do this properly and create little movies of plants growing. I think an AC power supply will be my next purchase.
I wound a piece of 6mm copper pipe around the base of the pot in which the Bay is growing to deter the slugs from gaining access.
I haven't had time to put an image up, will try to do so tomorrow but am trying to get away to Scotland again tomorrow. I am hoping for some star trails behind The Quiraing, on Skye.