The blackened branch ends in the 2 photos started appearing a few of my 23 plants about 3 weeks ago.
Growing in Michigan, outdoors.
Growth has been real good. Some plants over 7 feet now.
Seems like this blackening is spreading from plant to plant. Not all plants showing it yet.
Started spraying with Neem Oil 4 days ago - a shot in the dark. Want to stay organic
When I cut the blackened ends off and then rub with my finger tip, the blackening does not seem to smudge or lighten in color as it might if it were a powery substance on the leaf.
No mites visible under a store bought magnifying glass.
Thank you so much for insights.
Growing in Michigan, outdoors.
Growth has been real good. Some plants over 7 feet now.
Seems like this blackening is spreading from plant to plant. Not all plants showing it yet.
Started spraying with Neem Oil 4 days ago - a shot in the dark. Want to stay organic
When I cut the blackened ends off and then rub with my finger tip, the blackening does not seem to smudge or lighten in color as it might if it were a powery substance on the leaf.
No mites visible under a store bought magnifying glass.
Thank you so much for insights.