Ask a Question forum: Lemon Tree

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May 26, 2017 4:00 AM CST

Im struggling with a growth of black spots and fungus on the leaves of my lemon tree. Does anyone know what spray I could use to spray the tree to get rid of this as well?

Thank you so very much once again.

Rainer Schleicher
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Name: Philip Becker
Fresno California (Zone 8a)
May 26, 2017 11:45 AM CST
Does it rub off black on your fingers, like soot ? On my phone it looks like BLACK SOOT. Theres a spray for it. Ask at your nursery. I cant remember what name of spray is.
Anything i say, could be misrepresented, or wrong.
Name: Elaine
Sarasota, Fl
The one constant in life is change
Cat Lover Master Gardener: Florida Tropicals Multi-Region Gardener Vegetable Grower Region: Florida
Herbs Orchids Birds Garden Ideas: Level 2 Garden Sages Celebrating Gardening: 2015
May 26, 2017 12:15 PM CST
It looks to me as if you have an infestation of sucking insects, maybe aphids. The black sooty mold grows on the secretions that the bugs leave behind. So to get rid of both, you will just need to thoroughly spray the whole tree, especially get the undersides of the leaves, with a soapy water solution. 1/2tsp. dish soap to a quart of water. (stronger is not better, just be very thorough to spray everything) Leave on for maybe 10min. then rinse off with the hose and let the tree dry.

You'll need to do this several times, a few days apart to get all the generations of bugs that may still be in egg form when you first spray. One application isn't going to cut it. I'd plan on doing the spray program every 4 or 5 days for the next few weeks.

"Success is stumbling from failure to failure with no loss of enthusiasm." –Winston Churchill
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
May 26, 2017 2:15 PM CST
They look like mealybugs to me but the treatment will be the same. Use rubbing alcohol mixed with water (1 part alcohol to 3 parts water) and spray until the plant is thorughly wet top and bottom. Rinse well with your garden hose and watch for reinfestations. Don't do this in the sun.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost


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