Powdery mildew
cultivar how soon after infection this happens. In apple, pear, outdoor grown rose and other Rosaceae , the fungus causing powdery mildew is extremely [...] ‘hides’ on the underside of the leaves. Therefore, this is where the colonies mostly occur in these crops. In covered roses, the colonies appear first and foremost [...] Only in pepper, infection (by Leveilula taurica ) is through the stomata and the fungus grows inside the leaf. Later, the conidiophores in this case also