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Welcome to eGRO

 

e-GRO (Electronic Grower Resources Online) is a collaborative effort of floriculture specialists to create a new clearing house for alerts about disease, insect, environmental, physiological and nutritional disorders being observed in commercial greenhouses. Information is available about disorders, podcasts, and research.

Bringing together some of the leading specialists from universities around the USA, e-GRO is a free resource and learning tool for anybody involved in greenhouse plant production.

The American Society for Horticultural Science awarded e-GRO their "Top Extension Website" for 2013.

Latest - Volume 6.41

Marigolds require a low to medium level of fertility at 100 to 200 ppm N. The optimal pH range is between 5.8 to 6.2. This will avoid low substrate pH induced iron and manganese toxicities which occurs if the pH drifts lower than 5.5. Substrate pH values above 6.5 can also inhibit iron availability.