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.
How the lemon looks on the outside is more important for Meyer lemons than it is for other types. Meyer lemons are ready to taste test when the color has changed to a greenish-yellow color. Other types of lemons, like Lisbon and Eureka, can be tested when the fruits turn yellow on the tree. The best way to determine if your lemons are ready is to pick one and cut it open. Because lemons are tart, you don't need to leave them on the tree to develop sweetness.