I have had two three-tiered ivy topiaries for 10 years. They have been low maintenance. They are always sheltered. In late April I noticed that one had almost died almost overnight - leaves completely dried and brown. The other one closer to the house had begun to turn brown on the lower tier at the back. I have repotted in larger pots with new soil and Miracle Qrow Quick Grow and worked with the roots to give more air. The first topiary seems to be greening a little on the bottom. But I have recently noticed white spots dotting the leaves. Help! Is there any hope? I have loved these guys and hope to be able to keep them. Is it hopeless? What can I do?
Certified GKH Gardening Expert
It is likely scale or mealybugs. The treatment for both is the same, though I prefer using neem oil. These articles will help: https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm, https://www.gardeningknowhow.com/plant-problems/pests/mealybugs-white-residue-on-plants-leaves.htm, https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm