Although jasmine is forgiving, it prefers acidic soil. If your soil is highly alkaline, this imbalance may cause yellow leaves.
What soil does jasmine like?
Jasmines need fertile, well-drained soil in sun or partial shade. They are not all fully hardy, so some need to be grown indoors or in a very sheltered or frost-free spot – check plant labels carefully for individual requirements.
Does star jasmine like acid or alkaline soil?
Acidity Levels
Jasmine grows best with a pH level between 4.9 and 8.3. If a soil test reveals levels outside those parameters, the soil needs to be amended to alter the pH. Soil that is too alkaline has a high pH number. Alkaline soil interferes with the jasmine's ability to access iron or manganese from the soil.