Select seedling from known captivar Sunflower and Shenandoah, not the wild seedling. These plants will have bigger fruit and less seed, will be closer to the parents. I only select the best seedling out of many to transfer to 3 gallon pots.
2yr olds are $20 each. 3yr olds are $30 each. They range from 2 to 3 feet tall.