The tips of my plants are turning brown. I wondered if this is a lack of water or fertilizer.
The bed is quite full and beautiful in bloom or not. They have been in the garden about 11 years and never separated. I DO NOT want to lose them. Any advice would be helpful. Thank you.
In warm climates or warm weather the leaves of your Agapanthus foliage can become brown from leaf scorch or sunscald.
You can help your plants now by providing a sunscreen by using some shade cloth.
You may want to move your plants to a shadier location in the future.