What's NOT Doing so Well - Time to Fess Up

So, for every couple dozen plants that thrive in my garden, there's at least one that....well...doesn't thrive.


Here are the citrus trees that have dropped half their leaves. I don't know why the leaves dropped, but they appear to be doing relatively okay. The far left is a variegated pink lemon that has budded and set fruit for the first time. The middle two are myer lemon and key lime.
Here's a brusmansia (Angel's Trumpet) that I grew from seed. It's been transplanted a few times. Way back in March 2007, it was infested with aphids and bounced back nicely. We'll see how it does in the ground with only one day of sprinkler water per week. The yellowing is due to the change in watering schedule (the water mgmt district recently mandated that we can only water once per week).

Here's a white hibiscus. It caught something anf dropped all its leaves. I cut it back by half and am waiting for it to (hopefully) bounce back.

Here's a queen palm that has frizzle top. I've treated it with manganese sulfate, but it doesn't look like it's working.