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Alternaria leaf spot of rough lemon Alternaria citri: Alternaria stem-end rot Alternaria citri: Anthracnose = wither-tip Glomerella cingulata Colletotrichum gloeosporioides [anamorph] Areolate leaf spot Thanatephorus cucumeris = Pellicularia filamentosa Rhizoctonia solani [anamorph] Black mold rot Aspergillus niger: Black root rot Thielaviopsis ...
Peach leaf curl is a plant disease characterized by distortion and coloration of leaves and is caused by the fungus Taphrina deformans, [1] which infects peach, nectarine, and almond trees. T. deformans is found in the United States , Europe , Asia , Africa , Australia , and New Zealand . [ 2 ]
The pittosporum flower weevil (Aneuma rubricale) is a parasite that feeds on the underside of the lemonwood leaves. This parasite does not kill the lemonwood it just damages the leaves through its feeding. The holes the weevils eat in the leaves are visible because the leaf reacts causing a dark brownie purple ring to form around the hole.
To do this, find an actively growing but slightly matured shoot on a lemon tree and cut a small section just below the leaf. Add rooting hormone to the cut to encourage growth.
When repotting a rootbound lemon tree, tease the roots out so you can see the size of the root system, and choose a pot that’s about 15% larger than the root system. 3. Choose a well-draining ...
Phyllosticta citricarpa is a plant pathogen, some strains of which cause a leaf condition called black spot on citrus plants. [2] As a result, such strains are subject to phytosanitary legislation in the European Union and the United States.
Citrus canker bacteria can enter through a plant's stomata or through wounds on leaves or other green parts. In most cases, younger leaves are considered to be the most susceptible. Also, damage caused by citrus leaf miner larvae (Phyllocnistis citrella) can be sites for infection to occur. Within a controlled laboratory setting, symptoms can ...
Lemon cypress trees naturally maintain a pyramidal shape as they grow and rarely need pruning. However, if your plants produce a few wayward stems, you can always snip them away with clean pruning ...