cheezydemon said:
Not enough light in south Florida?
I would sugget growing it inside if you have a place. A 2 story room with lots of light and skylights would be best.
Nope, not enough light, at least not long enough (sort of). Remember near the equator it is pretty much 12 hrs of light every day, all year round. The further North one goes the more variation you get throughout the year. The payback for long winter nights is long summer days - thats what the hops need to flower. Growing up in Michigan I loved the fact that it would be light until nearly 10 PM at the summer solstice.
I found a nice calculator
For Miami, FL, June 22nd 2008, sunrise 6:30, sunset 8:16 or ~13.75 hrs
For Eugene, OR, same date, sunrise 5:30, sunset 8:59 or ~15.5 hrs, 1.75 hrs more daylight than Miami.
It is actually not the amount of light, instead it is the amount of dark that is critical. Some plants need long nights to flower (Christmas cactus, poinsettia), some don't care (tomatoes, soybeans), and others need short nights like hops (also mums, lettuce, potatoes)
If you can track down a light source that provides lots of 660 nm (red) light, and not much 690 nm (far-red) light it may be possible to simply turn this light on in the middle of the night for 30 min. to fool the plant into thinking the day is longer.
Sorry, my day job is as a Plant Biologist