Here is a science paper detailing the benefits of this approach. At the end of the day, one of the best benefits of hiring a professional is handing your worries over to them instead of being burdened with them yourself. If it does not come above ground after about two weeks, the chance of of it being a viable seed is dramatically reduced, and it s best to try again.  Source: <a href=https://cingomaterial.com/?p=1014>https://cingomaterial.com/?p=1014</a>