Kowhai, Sophora sp. is a big tree that can reach up to 20 ft tall and is native to New Zealand. Ideal place to plant is the seaside, since they are salt tolerant plants. They require full sun and moderate water, and they can be grown in USDA zones 8-10. The Kowhai flowers are abundant in the spring and consist of yellow, orange clusters that make the tree stands out in the landscape.
When it comes to growing Kowhai, the most important thing is to make sure the soil is well-drained as their roots can quickly rot if there's standing water. They don't require too much water when young and an overwatering should be avoided. Another requirement for successful growth is a sunny spot as they prefer full sun.
When growing Kowhai in cold regions, it is best to plant them in pots. Cold temperatures can hurt the plant, which is why it is a good idea to use a container that can be moved around and brought indoors in winter. If you're using a pot, make sure it has enough space for the roots to expand and provide it with good quality soil and make sure to water regularly.
Kowhai is a beautiful tree that is suited for a seaside garden and is sure to be a conversation starter. Its bright yellow and orange flowers are sure to bring a nice pop of color to your landscape. With the right soil and water, this tree is sure to dazzle for years to come.