A flowering quince can lose its leaves, especially during warm, rainy years. This is due to the plant’s susceptibility to fungal diseases, which are more likely to occur when water splashes on the leaves. The fungal diseases cause the leaves to develop spots and, in severe cases, they may drop from the shrub by the end of the blooming season.
One of the reasons flowering quince is prone to fungal diseases is its preference for moderate watering. It is a drought-tolerant plant, which means it can withstand periods of dryness and does not require excessive watering. However, when the plant is exposed to frequent rainfall or overwatering, the excess moisture can create an ideal environment for fungal growth.
I have personally experienced this issue with my own flowering quince shrub. During a particularly rainy summer, I noticed that the leaves started developing small spots, which gradually spread throughout the plant. As the season progressed, more and more leaves dropped from the shrub, leaving it looking quite bare and unhealthy.
To prevent or minimize leaf loss in flowering quince, it is important to avoid excessive watering and provide good drainage for the soil. This can be achieved by planting the shrub in well-drained soil or adding organic matter to improve soil structure. Additionally, it is advisable to water the plant at the base rather than overhead, as this reduces the chances of water splashing on the leaves.
Another preventive measure is to ensure proper air circulation around the plant. This can be achieved by pruning the shrub to remove any overcrowded branches or foliage. Adequate spacing between plants can also help promote air flow and reduce the risk of fungal diseases.
In terms of treatment, if fungal diseases do occur and the leaves start to develop spots, it is important to act promptly. Pruning affected branches and removing any fallen leaves can help prevent the spread of the disease. Additionally, applying a fungicide specifically formulated for ornamental plants can be beneficial in controlling the fungal growth. It is important to follow the instructions on the fungicide packaging and apply it as directed.
Flowering quince can lose its leaves due to its susceptibility to fungal diseases, which are more likely to occur during warm, rainy periods. By providing moderate watering, good drainage, proper air circulation, and timely treatment, leaf loss can be minimized or prevented in this drought-tolerant plant.