These leaves are from a tree infected with a common fungal disease, leaf spot. The photographs show leaves that appear rust-covered and brown, and for comparison, I included a photograph of a healthy leaf from the same tree. The leaf spot appears like a reddish-sore on the leaves of this particular tree (and had spread to other trees and shrubs in my garden). The leaf spot had actually covered about one-third to one-half of the leaves on this tree.

I used a treatment of neem oil, about which I had been somewhat aware, and the leaf spot disappeared almost over night. There are only a few leaves on the tree which still appear infected, and I trimmed these from the tree.

Leaf spot in other areas of the garden seem diminished and reduced, which is (hopefully) sufficient to prevent a spreading disease.

This is a photograph of a strawberry root infected with root rot, a fungal infection caused by overwatering. The root is a dark, black color, while normal roots are light beige. The crown of the strawberry root was also infected. On the strawberry plant, there were about two or three non-infected roots.

I trimmed away all the diseased roots with pruning shears, and dipped the crown and remaining roots into a solution of hydrogen peroxide (3%).

This is green tea infected with what appears to be a parasite (possibly ringworm). There is a stray feline that frequents the property, and it has intestinal worms. It is likely the feces are spreading parasites in the garden, and it is particularly attracted to the camellia sinensis. I have begun treating the tea leaves with neem oil, and feeding the cat with an anthelmintic.