It doesnt take long to collect and save arugula seeds. Its our favourite salad green and I grow it year round in our zone 6 garden. I always let some of the plants flower (edible flowerbuds and Last year I started growing roses from seeds. After learning a few lessons I have 36 this year, here's a few of them! : r GardeningUK 6 Things You Need to Know When Growing and Caring for Split Rock Succulents Box When to Plant Grass Seed (in every state & USDA growing region)