The answer to 'deck not growing' is that there can be several common causes, including poor soil conditions, insufficient sunlight, or improper maintenance. Symptoms may include slow or stunted growth, bare or patchy areas, and discolored or unhealthy-looking plants. Solutions can range from improving soil quality, providing more sunlight, and regular weeding, watering, and fertilization.
If the issues persist or you're unsure of the cause, it's best to consult a professional landscaper or horticulturist. They can diagnose the problem and recommend the appropriate treatment, whether that's DIY maintenance or more extensive landscaping work.