My seeds germinated in 6 days! I live in Irvine, CA, and planted the seeds in late June. I planted them where I intend to have them grow, so no transplant necessary. It’s late in the season for planting seeds, but I decided to go for it. Sometimes it can remain hot into November here.
Look to ensure a distance 8.12 feet (2.50 metres) between seeds when sowing - bury at a depth of at least 0.39 inches (1.0 cm) deep. Soil temperature should be kept higher than 16°C / 61°F to ensure good germination.