@dave
I always use to be able to add plants to my list, but lately the drop down section doesn't go all the way down to click 'add'. It just stops at the Status: and the 'choose from below'.
Problem could be that you've added Optional comments: with a section below that to write in it.
I didn't have the problem until you added that new section on top. Now there doesn't seem to be enough space at the bottom to click add.