Those without the room for a greenhouse have been told not to worry about an apparent lack of growing space.
According to the Examiner, people looking to harvest their own food can do so on areas such as rooftops.
It pointed out an organisation called the Glide Foundation is giving tips on how to establish a roof garden in San Francisco.
Taking place this Saturday (September 12th), the two-hour class begins at 11:00 local time and costs a $10 donation, although those without the cover charge will not be turned away.
It will teach growers more used to greenhouses how to transform their urban rooftop into a vegetable garden, with attendees learning how to build a self-watering container, the article revealed.
Other topics covered will be making lightweight garden beds from milk crates and a worm composting system.
Those wishing to attend should email email@example.com, the online resource revealed.
Meanwhile, the Examiner also recently published a list of books relating to garden and greenhouse activities in Kentucky, which may interest growers from that area.