The answer to 'retaining wall not growing' is that a lack of plant growth on a retaining wall is often caused by poor soil conditions, insufficient sunlight, or improper plant selection. Retaining walls can be challenging environments for plants to thrive in, as the soil is typically shallow, rocky, and prone to drying out.
To address a retaining wall that is not growing, you should first inspect the soil and ensure it has adequate nutrients and moisture-holding capacity. Adding compost or other organic matter can help improve the soil. You should also make sure the plants you've selected are well-suited for the conditions of the retaining wall, such as drought-tolerant or sun-loving species. If the issue persists, it may be best to consult a professional landscaper who can assess the site and recommend the best course of action.