After more thought maybe a main header of diary and then month by month boards would be better after all. Then we could start a new post titled whatever we see, then add to that post each time and year to year, ie snowdrops as title and then as i said before
date
place aand details...
At the very least the site will be interesting to us and a good record of stuff esp if both of us do it locally we'll get an idea of whats going on in our area