How To Plant Jalapenos From Seeds. How to plant jalapeño peppers. It’s best to wait until at least two weeks after planting tomatoes to plant jalapeno peppers in the garden.
Decide whether you will keep your pots indoors or move them outdoors, as this will affect when you need to plant your seeds or seedlings. Black jalapenos are sweet with a mild heat that registers 2,000 on the scoville scale. The bad seeds will float to the top and can be discarded while the good seeds will sink to the bottom.
An important aspect of growing jalapenos or growing bell peppers is to space the seeds out correctly.
Begin to harden off jalapeño seedlings about 10 days before transplanting outdoors. Here’s an article that helps you determine your gardening zone and last. Sowing the seeds for success. Jalapenos thrive in warm conditions and need temperatures between 65 and 80 f.