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.
Watch for curling or yellow leaves. This is often a sign that your cedar tree has been infested with aphids or scales. Spray the foliage, especially the undersides of the leaves, with a strong spray of water from a garden hose to knock the pests off.edar apple rust usually won't kill the tree, but it can cause the leaves to turn brown and fall off. Remove the galls by pulling them off the affected areas. Wear gloves to do this. Apply a fungicide to prevent the galls from spreading or returning.