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This time of year I leave the greenhouse doors open all the time to prevent blight.
Quote from: galina on August 18, 2019, 19:03:28This time of year I leave the greenhouse doors open all the time to prevent blight. Galina, I ask this as I recognise your experience, but is it not the case that blight spores are said to travel through atmospheric uplift and rainfall, to develop as a fungus through damp with humid conditions and are therefore less prone to develop in sheltered (ie greenhouse ) conditions. The large opening of a doorway certainly allows air movement in from the outside (but potentially infected?) Do you compensate by heavy pruning of lower leafstems and minimal density of planting?