[Arid_gardener] Question from Home-Hort WWW page

[pniesl at yahoo.com]

Pamela
85339
pniesl at yahoo.com

I have 5 thevitia in my yard in different locations. One is established and is in an open area where it gets sun from the east, north, and south all day. It is dark green with many flowers. I have two more on the west side of my house in front of the west wall of the house, but not right up to it. They primarily get the afternoon sun full strengh. I planted these this past spring and although they have a lot of green leaves and new leaves and flowes / buds, I have a problem with some of the leaves turning yellow. There always seems to be at least 5-10 yellow leaves on each plant, which eventually fall off. One of my thevitia in the back yard, in front of the back wall, facing north, has this same problem but to a greater extent. The bottom half of almost all of its branches is bare from the leaves turning yellow and falling off. About 4 feet west of that one, I have another thevitia that is green and flowering with no yellow leaves. This one is blocked from the west sun by a very large orange jubilee. All the plants are on an irrigation system that waters for 1 3/4 hours every 10 days. Can you tell me what I can do to keep the leaves from turning yellow and falling off of my thevitia?