3. Sowing seeds: Sunflowers can be directly sown in the pot or started indoors and transplanted. If sowing directly, place 2-3 seeds about an inch deep in the center of the pot.

'Sunflowers in pots should be watered when the top 1–2 inches of soil feels dry, typically, 2–3 times per week in warm weather,' advises Michael Clarke. 'It's best to water deeply so the roots ...