1 Gallon Full Black Nursery Pots Grower's Solution If youre wanting to collect seeds from your dahlias heres a quick tip on what to look for., Remember: , Not all flowers will be pollinated and make seeds. You can help the seed producing process by Sweet Corn * Just completed sowing six sweet corn seeds (each) three separate in 18 inch planting rings * From sowing to harvest should be about 70 to 75 days * After Pottery Collection Big Earth Landscape Supply