You need to read the history of the area.
When Israel occupied Gaza from 1967 until 2005 they had a booming market gardening and floristry business. They exported fruit & veg all over the world.
Israel pulled out in 2005 after international pressure was brought to bear.
Then the Palestinians looted the greenhouses. They used some of the irrigation pipes as rocket launchers to attack Israel.
See this from 2005 - https://www.nbcnews.com/id/wbna9331863