The precise depth at which to sow zinnia seeds influences germination success and subsequent plant development. Planting too shallow can lead to desiccation before roots establish, while planting too deep can deplete the seed’s energy reserves before it reaches the surface.
Proper seed depth contributes significantly to efficient seedling emergence, promotes robust root systems, and ultimately enhances the overall health and flowering potential of zinnia plants. Historically, inaccurate planting depths have been a common cause of zinnia cultivation failures, highlighting the importance of this seemingly minor detail.