How long does it take a sun flower to grow?

Takes approx 14 - 21 days for sunflower seeds to germinate, depending on the type of S. flower, and weather & water conditions.

In a warm temperate climate sunflowers grow from seed to flowering stage in about three months and another six weeks until the seeds mature in the flower head.This relates to the giant flowering types-some of the smaller varieties are quicker to mature.