Fertilising a Trachycarpus wagnerianus
To ensure the robust health and optimal growth of Trachycarpus wagnerianus, it is recommended to fertilize during the growing season, from early spring to late summer. A slow-release palm-specific fertilizer, rich in nitrogen, potassium, and magnesium, should be applied according to the product's instructions. Typically, fertilizing once at the start of the growing season and again in mid-summer is sufficient.
Due to its moderate water needs, it's important to water the plant after applying fertilizer to aid in absorption and prevent root burn. The species' resilience in USDA zone 6b indicates a degree of cold tolerance, but proper fertilization will further enhance its winter hardiness, helping it withstand temperatures as low as -17.8°C to -20.5°C. Regular feeding will also support the development of its distinctive yellow flowers and subsequent fruiting.