Poor Seed Quality or Incorrect Planting Depth
Cheap seeds or ones stored too long may lack the vigor to germinate consistently, leaving gaps in your sunflower patch. I once used leftover seeds from two seasons prior and ended up with a 50% germination rate—so disappointing! Planting too deep can also delay or prevent emergence; sunflower seeds prefer a shallow home about 1 inch beneath the surface.
Invest in fresh, high-germination seeds from reputable suppliers and store extras in a cool, dry spot. When sowing, gently press seeds into moist soil, cover lightly, and keep the bed evenly damp until seedlings appear. Healthy saplings set the stage for those broad, nectar-rich blooms that bees and butterflies adore!