I think the problem is its not easy to find mature plants to put into the enclosure(outdoors). So it takes a bit of time for all the plants to fill in the enclosure. The rosemary bush is great! But how long did it take to get that large? At least a couple years. I just planted a few ornamental grasses and couple lavender plants along with some other shrubby plants inside my enclosure but they will take a while to make it a jungle.