Why is my lavender going yellow?
I am fairly new to gardening and need some advice.
About 2 years ago, I planted a row of lavender and they have flourished. They have finished flowering and beeing very busy I have only just managed to trim them back. However, I have noticed that the leaves have started to turn yellow.
Is this because I have been late in cutting them back, or could there be something else wrong?
Any advice would be appreciated.