There was a discussion here that may help:
The thread "Adding photos from the data base to posts" in
Site Talk forum
Or try this...go to a plant in the database...I went to Poinsettia;
then I selected Poinsettia (Euphorbia pulcherrima) which brings you to this page:
Click on a photo of Poinsettia and it takes you to this page:
Click on "More Photo Details" and it shows this page; the ATP BB code is just above the image:
Copy/paste the ATP BB Code into your post.
Hope that helps.
