How To Grow Sunflowers From Seeds Outdoors. Start your sunflower patch with seeds or seedlings, planting in full sun with protection from strong winds, which can break stems. Sunflowers properly grow best in the locations with full sun.
As an easy plant to grow, the sunflowers often plant. Cover pots with a clear plastic bag and place in a cool but bright place. Sow two seeds per pot, cover with plastic to keep moist;
Fill a 16 by 18 inch (40 by 45 cm) pot with topsoil that has a ph between 6 and 7.
The sunflowers will be fine in soils which are slightly acidic to somewhat alkaline in ph 6.0 to 7.5. To remove the seeds, brush your hand over the seed head, knocking out the seeds. You can also sow sunflower seeds outdoors in late may. Growing sunflowers in pots as well as producing seriously impressive blooms, sunflower seeds are easy for little hands to deal with, and pretty low maintenance to grow.