1) My agapanthus plants look awful. They bloomed beautifully this year. They are on a watering system in the same area as camellias and begonias. I try to be very careful with the system and never let it run after a decent rain. The water system also has a rain gauge. They did the same thing last year. My neighbors' agapanthus do not look this bad. These get morning sun until about 2 p.m. with lots of sun.
2) I planted the fatsia and another fatsia in two large pots in the fall. This one gets more morning sun than the other but they are on the same front porch (sitting several feet behind the agapanthus). The other one does not have black areas on any of its leaves. Is this a disease or too much sun?
These fatsias have grown faster than I have ever seen any plant grow. How should I prune them or should I?
1) Here is an excerpt from my column in The Times-Picayune today:
One of the most beautiful of the early summer blooming bulbs is the agapanthus or lily of the Nile. Although agapanthus do well here and are popular, they do not like it when temperatures reach the 90s. This causes dieback of the leaves – the tips of the leaves turn yellow, then brown. It doesn’t look good, but they will recover. Other plants and even shrubs and trees may show scorched leaf edges.
2) The symptoms on the fatsia could be related to too much sun. Remove the ugly leaves and dispose of them. I see some yellowish leaves at the top. This can also be a sign of too much sun.
If needed, you can cut back a fatsia. It makes them look terrible initially, but they generally send out new growth and recover.
Consumer Horticulture Specialist
The LSU AgCenter and the LSU College of Agriculture