This picture was taken with a high resolution electron microscope looking at a leaf infected with mildew. At this resolution it is possible to see a mildew germ tube with appressorial initials "digging" in to the leaf surface. Penetration tubes pierce the cuticle and enter the epidermal cells where haustoria (sort of like roots) are formed. A mildew colony like this one can be formed in a matter of days by just a single airborne spore landing on the leaf. You can protect your plants from a mildew invasion like this one by spraying them with GreenCure® every 1 to 2 weeks.
On plants tested in environmental conditions that promoted mildew growth, GreenCure® achieved nearly 100% protection against powdery mildew. (Learn More)