When basil flowers start to drop and the flower pods turn brown, it's time to collect seeds. Only pollinated flower pods will have seeds in them so dont expect to find seeds in every pod. This is why having bees and beneficial insects in the garden is important.
This is a plant perfect for the Kuwaiti winter, I've harvested baskets after basket, and it keeps producing! It's been a great addition to my garden, if you plan on growing one thing next winter, grow rainbow swiss chard.