We have used this on our Trachycarpus Fortunei and Wagnerianus. After the harsh winter the Fortunei was looking a little yellow and sorry for itself. Despite the scorching heat that we are also experiencing the Fortunei is now looking much greener and healthier with new leaves appearing. We also used this fertiliser on a potted Washingtonia Robusta which spent the winter in the greenhouse and this is also looking much healthier with lots of new growth. Will definitely continue to use this product from now on.