Turnera Ulmifolia is a flowering plant native to West Indies and Mexico. The name 'Turnera' comes from William Turner who is considered the father of English Botany and 'Ulmifolia' comes from the fact that the leaves of the plant are quite similar to those of the Ulm plant.
Turnera Ulmifolia can become invasive. You need to prune the plant frequently to prevent the plant from becoming tall and leggy other than that the plant does not have any special requirements.
The plant can be grown in full sun or partial shade. Best results will be observed in a region where the plant receives abundant bright sunlight throughout the day.
Foliage consists of dark green oblong-lanceolate or lanceolate leaves clustered towards the tip of the branches. The flowers are bright yellow buttercups and create a great contrast to the dark green background. The plant flowers year round.
Water the plant, and then wait for the topsoil to dry out before watering again. Watering once a day should be enough. During the hotter days, the plant may require more frequent watering.
The plant does not have any specific soil preferences except that it is well-drained. It is salt tolerant. You can add organic content to make the soil more fertile. Add a layer of mulch to help retain moisture.
The plant can grow up to 2 to 3 feet in height. Prune the plant to maintain its size. It can become tall and leggy if not pruned.
Use a balanced fertilizer diluted to half its strength once a week. You can cut back or reduce the frequency of fertilizing in the winter months.
The plant is susceptible to aphids, scale and whiteflies. Scout the plant for signs of these and treat immediately with appropriate insecticides and pesticides.
It is a perfect plant for butterfly garden as the plant flowers year round and the flowers are quite attractive to bees and butterflies. You can easily grow it in a container. It is mainly used as an ornamental plant however the plant is said to have medicinal properties too.