Aimee Stern. I have been working with scientists and engineers on explaining their research and other work to the general public for almost a decade. I've explained the science of many things and how they connect to the real lives of real people.
Sunflower seeds are best sown outdoors directly into the garden. After planting, cover them with a screen, as the birds and animals love to dig the seeds out. You can also start them in a seedbed and transfer them when they are small. If you plant sunflowers indoors, use individual peat pots. Start two to three weeks before the last frost date for your area. Plant one or two seeds per pot, thinning to one before planting outdoors. If you grow them to feed the birds, look for seedlings growing near the base of last year's crop.
The plot on the south side of our house that we devote to growing sunflowers is 40 by 70 feet. Last year, we decided to plant 5 plantings, but only planted 4 in the end because we ran out of steam and seeds. In each of the 4 plantings there were 15 rows. In each row we planted 80 seeds (6 inches apart). We left one foot of space between each row with two feet of space between each planting. This summer, we will divide the plot into more, smaller plantings so they will be staggered more evenly throughout the summer.