I need gardeners help again!!
I have couple of young lilac trees on the back yard of which one has got powdery fluffy stuff on some branches and not sure what I'm dealing with here, mildew? Fungus? Some bugs? I found couple of weird looking creatures on couple of leaves, never seen before. It had already last summer this powdery stuff on these branches and I managed to get rid of it by rubbing it with neem oil couple of times, but it's back now again. Nothing on the leaves though. Do I have to cut of these entire branches now, or is there another way around it? Help!!
Related Discussions
GNATS - How to get rid of them?
Somehow my house and garden got tiny gnats that killed my fuchsia plant and fly everywhere. I have tried ALL the Web recommendations - soap and oil dishes, sand in th... See more
Marigolds growing! Should I pinch the buds?
My marigold plants are growing. I heard that pinching the buds until Autumn will allow them to grow without killing the plant. Is this true?
Growing garlic
Growing our first garlic, should we wait until the leaves are drying out before we pick it? Husband picked first one today along with our first potatoes.
How to keep mice out of your garden?
Hi everyone, I have mice in my garden destroying my vegetables and I have also noticed them in the barn and shed. Please can someone tell me how to prevent them from ... See more
What's the best flower/plant to grow in Texas?
I know that opinions vary, but what's your opinion?!I have great luck w Rosemary plants. Green all year long.
Help, I need to save my boxwood bush
I have 13 small boxwood bushes and 3 large ones. One of the larger is dying. I thought it may come back, but I'm not sure. I'm trying to be proactive and save it. The... See more
I need your help?
I live in zone 7, southern New Jersey, and a discoloration is forming on my elephant ears. Can anyone tell me what I am doing wrong? Could it be watering before 8 AM ... See more
It looks like powdery mildew on the stems and what you are seeing is the fungal spores. Also lilacs need air and circulation around it to help fight off diseases, so you might want to consider trimming back the surroundings.
Here's a link about what yo can do for the mildew and insects that are common to lilacs:
https://www.gardenguides.com/79916-problems-lilac-bushes.html
Hello. One suggestion might be to look at the substance on your branches with magnification a common household magnifying glass might be helpful. As master gardeners we are provided with an inexpensive jewelers loop to look at plant problems or deceased materials. Identifying if it is a fungus or an insect like scale might be helpful to address your situation.Here’s a link that could be helpful.
https://ask2.extension.org/kb/faq.php?id=337610
If none of the responses or suggestions here seem to identify your problem you may consider a trip to your local Cooperative extension. Master gardeners are volunteers manning the helpdesk there and are available to assess and examine your plant problems. If they cannot provide you with an answer or diagnosis the plant materials are shipped off to the local university for examination and diagnosis there.
You might have white aphids - check out this article: https://plantcaretoday.com/white-aphids.html
I would take a picture of it to a local nursery. They'll tell you exactly what it is and how to fix it. I always find that they know best when it comes to local plants and what attacks them.
Not so sure about the powdery mildew. That usually looks like just white lightly spray painted leaves. Super fine with no grain like this showing. It looks more like the leaves were dusted with flour. It is possibly mold. Powdery mildew is a fungus and is treated with a fungicide.
Like roses, tomatoes and other disease-prone plants, lilacs need morning sun to dry overnight dew and dampness off their leaves. If other plants are blocking that early sun, see if you can prune or remove them. Otherwise, do everything you can to increase airflow to the area.
This includes pruning the lilac immediately after flowering every Spring to open up the center and increase the internal airflow. Remove some entire older branches down at ground level first, then take out some of the younger branches that are crossing or otherwise restricting airflow. Remove all the spent flower heads promptly as well. Do these chores immediately after the flowers have faded and it will improve the following year's flowering as well as help keep the white stuff at bay.
here is info for you
https://homeguides.sfgate.com/rescue-diseased-lilac-bush-66015.html
Hi! Hope this helps:
https://extension.psu.edu/lilac-diseases
Powdery Mildew On Lilac Bushes: Tips For Treating Powdery Mildew On Lilacs
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/powdery-mildew-on-lilac-bushes.htm#:~:text=Powdery%20mildew%20on%20lilac%20bushes%20isn%E2%80%99t%20caused%20by,leaves%2C%20stems%2C%20and%20flowers%20if%20conditions%20are%20right.
Hi Ms Marianne, hope this article helps you out,
https://homeguides.sfgate.com/rescue-diseased-lilac-bush-66015.html