David, every time somebody posts to this thread, you will be notified, because it's your thread originally. That's a unique feature of the Ask a Question forum. If you have your settings jump to the First Unread reply, it might look like one post triggered three notifications.
If you don't like all those notifications, start using the forums for your specific plants. There's a forum for Coleus, and I think begonias might be under Perennials and impatiens would be Annuals. (although they are perennial for me here in Florida)
