It sounds like your azalea might be facing a few common challenges. Yellowing leaves can often point to soil issues, particularly a problem with pH levels. Azaleas prefer acidic soil, with a pH between 4.5 and 6.0. You can test your soil's pH with a home kit and amend it using sulfur or a fertilizer designed for acid-loving plants if necessary.
Another possibility is a lack of essential nutrients such as iron or nitrogen, which also causes yellowing. Specific fertilizers for azaleas can help with this. It's worthwhile to check for pests like lace bugs or azalea spider mites, which can also contribute to plant stress.
For better blooms, ensure your azalea is getting enough light, ideally morning sun and afternoon shade. Pruning after the bloom period can encourage more flowers the following year. Applying mulch around the base can help retain moisture and keep the roots cool.
Regular watering is key, especially during dry spells, but avoid waterlogging the soil. This blend of care should help nurture your azaleas back to their former glory!
