In South Africa we should have great weather for jalapeno plants. I started planting from seeds in November 2013. I didn't have much luck at first, even with organic pesticide. I stopped making pesticide and again just let nature take its course. The plants were attacked by snails and worms during winter and only one small jalapeno on each plant. By the middle of spring the plants started blooming again and they looked healthy with no pesticide aid. I also noticed the peppers grew fast and bigger. Now I just leave them to see how big they will get before I harvest them.
I definitely would suggest adding some jalapenos to your garden. They are great help for your immune system. I started by planting them into pots then after 2 months I transplanted them in different locations throughout the garden. In the shade the plants will not grow much so I focused on the plants that were doing better in full sun. In all cases I would always water the plants a lot especially if it hasn't rained in 2 days. So with efficient sunlight and water, you would be good to go.
Jalapeno it up in your garden.I will post pictures if I find different pepper seeds to grow. Have a good day people.