Powdery mildew
remains on the outside of the plant surface. On the mycelium on the plant surface, new conidiophores are formed, structures which contain new spores, the conidia [...] infected. In pepper, the fluffy colonies occur mostly on the underside of the leaf, because the fungus infects the plant by entering through the stomata and there [...] harder for the fungi to enter the leaves To reduce chances of powdery mildew in greenhouses, it is advised to first ventilate by only opening the windows