Note the notch on the left margin of the leaf, which is symptomatic for this disease. Greasy Spot. Standard Meyer lemon trees grow to be 6-10 feet tall, while the dwarf variety grow to be 5-7 feet. June 27, 2018 / Gardening. Appearance of Meyer Lemon Trees. It’s more disease-resistant, and insect-resistant. How To Identify And Treat Citrus Tree Diseases And Insects. There are a plethora of DIY home remedies you can use to get rid of Meyer tree bugs. Meyer Lemon Tree Diseases Introduced into the U.S. in 1908, they are very popular in the home landscape. You love your lemon tree, with its fragrant blossoms and juicy fruit, but insects also love this citrus.There are a number of lemon tree insect pests. The first symptom of citrus chlorotic dwarf on a leaf of a rough lemon seedling after inoculation. Citrus Tree Diseases. Get rid of those bugs eating your meyer lemons. Soft brown decay at the stem end of a Meyer lemon fruit. Before that, the Meyer lemon tree was imported from China. If you have pests eating holes through your lemon tree leaves, lemon fruit, or tree roots, you can control them naturally using these solutions. These include relatively harmless bugs, like aphids, and more serious pests, like citrus rust mite, one of the insects that affect lemons rather than foliage.Read on for more information about how to get rid of insects on lemon trees. That’s the one we know and grow today. Greasy spot is a fungus, known as Mycosphaerella citri, that affects the leaves of citrus trees and thrives in tropical and subtropical climates. Meyer lemon is a small tree, does well in small gardens, and prefers warm climates, full sun and moist, well-drained soil. While it became increasingly popular in the United States, it was highly susceptible to disease and actually banned because of its penchant for spreading a devastating virus to healthy fruit trees.