Two or even more seeds are often sown for each plug, then the germinated seedlings are either left to develop on for a cluster or thinned out to leave the strongest seedling in Every single plug. Trays with smaller sized plugs go well with most leafy greens and radishes, especially https://growingplantsfromseed98765.thenerdsblog.com/38153565/how-to-propagate-plants-options