phyllocnistis citrella

The citrus leafminer is a very small, light coloured moth that arrived in California from Mexico in 2000 and has now spread throughout most of California. I’ve never seen an adult, but the larval action is very evident in my yard, especially on the young lime trees. They only infest fresh growth, which of course is just about all a little tree has!

I’ve been removing the affected leaves, but today I read that it’s not a good idea, because it just creates even more fresh growth for the larvae to mine. Apparently the insects will die off over the cooler months; here’s hoping, too, that natural predators come along to help create balance.

psidium cattleyanum

Our strawberry guava tree is busting out all over with fruit in varying stages of ripeness. We usually leave them for the birds to eat, though sometimes I’ll gather enough to extract a cup or two of juice. We preferred the lemon guava, but sadly that tree died after a few spectacular crops.

When looking up its Latin name, I learned that Psidium cattleyanum is (a) named for English horticulturist William Cattley (1788 – 1835) and (b) considered the most invasive plant in Hawaii. So many unintended consequences, when we move biota around the world.