For a medical symptom description of 'Muscle jerks', the following symptom information may be relevant to the symptoms: Muscle spasms (symptom). However, note that other causes of the symptom 'Muscle jerks' may be possible. More information on symptom: Muscle spasms: Muscle spasms.
Feeling the Heat. Excessive sun exposure and cold temperatures can turn lemon tree leaves yellow. Scorched leaves, which look bleached or have yellow patches, often appear only in parts of the tree facing the afternoon sun, but a cold snap affects leaves all over the tree.ellow lemon tree leaves can be a sign of disease. A lemon tree growing on poorly drained soil can develop Phytophthora root rot, which causes pale green to yellowish leaves.
Disease. Yellowing leaves on orange trees are often the result of a disease, most often a fungal disease â such as Phytophthora gummosis (foot rot), Phytophthora root rot (caused by the same fungus as gummosis), and Armillaria root rot (oak root fungus).y Amy Grant. Oh no, my orange tree leaves are turning yellow! If you are mentally screaming this as you watch your orange treeâs health ebb, fear not, there are a multitude of reasons why orange trees leaves turn yellow, and many of them are treatable.