We live in Victoria, bc, canada
It needs a warm climate so you can grow it in a container and move it inside for the winter. Here is info on growing seeds. You can start it indoors now and move it outside when the danger of frost has passed.
https://www.gardeningknowhow.com/edible/herbs/basil/holy-basil-uses-and-growing.htm
https://www.gardeningknowhow.com/edible/herbs/basil/growing-basil-seeds.htm