Hi! I'm new to gardening. In November I moved into a new house and inherited from the owners a beautiful large jade. When I first saw it in August it looked healthy. After I moved in, in November, I noticed a few mealy bugs and their cottony puffs. I sprayed with an alcohol-water mixture once a week for several weeks. (There were too many infected leaves and stems to remove the puffs individually.) That helped, but there are still a few mealy bugs left. Then it developed dark holes in some leaves. The lower leaves started turning speckled yellow-green, shriveling, and finally, dropping. Some leaves also developed tiny white powdery flecks, not the cottony puffs of the mealy bugs. Any ideas? It was being watered about once a week in the summer. In the fall I started watering once every three weeks. It gets a lot of light since it sits in a corner in a room with huge windows on both sides of it. It's in a dry, hot place near a heating vent, but being near windows it may get a bit of a draft. Here is a photo:
Name: Joshua Melbourne, Victoria, Australia (Zone 10a) Köppen Climate Zone Cfb
Seeing as this thread is the sticky for plant diseases, I thought I would add this reference here. This is my thread on Cymbidium leaf markings, including those that tested positive for virus.
Just moved to a new house with a big apple tree at the front. Although the tree looks healthy (and has produced tons of apples this year) I'm a bit worried as it's nearly all covered by this very thin layers of blue/greenish mould.
Is this a fungal infection?
I'm pretty new to gardening so I'm not sure where to take it from here, any advice is very appreciated!
Name: Carol Santa Ana, ca Sunset zone 22, USDA zone 10 A.
I can't help you as apples don't do well here, but Others could if they have an idea as to where this tree is located. You don't need to give an address, but a country/zone would give a clue.
