How can you prevent fungal diseases in ornamental plants?

Ensuring good air circulation is crucial in preventing fungal diseases in ornamental plants because many fungi thrive in warm, humid conditions. When plants are closely spaced or overcrowded, air movement is restricted, allowing moisture to accumulate on leaves and stems. This damp environment is ideal for fungal spores to germinate and spread. By ensuring adequate spacing between plants and pruning to improve airflow, you can significantly reduce humidity levels around the foliage, thus minimizing the risk of fungal infections. This practice not only helps in preventing diseases but also promotes healthier growth in the plants.

While applying pesticides can control existing fungal issues, it does not prevent them if the environmental conditions allow for fungal growth. Planting in shaded areas can actually increase the likelihood of fungal diseases since shade can trap moisture. Using only synthetic fertilizers may not address issues related to plant health and resilience to disease, as plants also require proper care in terms of location, water, and nutrient management.