Just a few days ago, my Hummingbird Sage was beautiful with no blight of any type. This morning I noticed these little light blemishes on almost every leaf. Other plants in my garden have had similar recently. I don't know if these photos will show it clearly enough. Any suggestions on what to try would be appreciated.
Light spots on Hummingbird Sage (Scarlet Sage, Texas Sage)
Can you rub it off, do you see any webbing?
It looks like whitefly or spider mites. Shake the plant and see if there is a cloud of white little gnat sized flies. Look at the underside of the leaves for them.
http://ipm.ucanr.edu/PMG/PESTNOTES/pn7401.html
For the mites, you might see some miniscule spiders drop from the plant surface if you shake the plant. You might see small webbing at the crotches between the main stem and the branches.
http://ipm.ucanr.edu/PMG/PESTNOTES/pn7405.html
Then there are mites you can't see so bring a sample to your extension center and let them look under a microscope.
It is important to check for these pests when you visit a nursery. They often infect greenhouses and as you say, they spread to other plants quickly with a broad range of hosts.
I'm think spider mites too but we've had soooo much rain that mildew could be a problem. I've seen webbing covering the entire plant.
DNP-you may want to post this on the Texas forum, given the crazy amount of rain we've had somebody else may also have the problem.
That could be. If it is powdery mildew, you would be able to wipe some of the white off but the pattern as I can tell by the photos, looks like a sucking insect. You mention other plants in the garden are affected. What are the other plants?
Post a Reply to this Thread
More Garden Pests and Diseases Threads
-
Osmanthus Fragrans Leaf curling
started by Sola2
last post by Sola2Jul 02, 20232Jul 02, 2023 -
Lemon problem
started by JoParrott
last post by JoParrottJul 06, 20231Jul 06, 2023 -
Curly tomato foliage on some plants but not all
started by JoParrott
last post by JoParrottJul 07, 20232Jul 07, 2023 -
Black dots on leaves of an apricot tree
started by green100
last post by green100Jul 17, 20230Jul 17, 2023 -
leaf spots and I am not sure
started by nappen
last post by nappenJul 25, 20230Jul 25, 2023