Ticks and black spot - Knowledgebase Question

Loudonville, Oh
Question by jmknana
July 26, 2008
My property is extensive and the dog comes in occasionally with ticks on her body. I use frontline to control ticks and fleas on her but how do I keep from getting them in the house? I have a hydrangea that has what looks like black spot on roses but it is on the entire plant. What should I do to eliminate this and will it kill my plant? The sun hits the bush in afternoon and evening on the west side of the house.
Thank you

Answer from NGA
July 26, 2008


Acaricides (pesticides) registered for the control of ticks include the following 7 chemicals: Carbaryl (Sevin, other brands). Carbaryl may be used against ticks on turf and recreational areas. Both sprays and granules have been reported effective against ticks. Chlorpyrifos (Dursban, other brands). Sprays and granules reported effective against ticks. Cyfluthrin (Tempo). Cyfluthrin may be used against ticks on turf and ornamentals. This product is available for commercial use only. Diazinon (Diazinon, other brands). This material belongs to a class of pesticides called organophosphates. Some products available to the public, but many restricted by label to commercial use. Sprays and granules moderately effective against blacklegged ticks. s-fenvalerate (Zema Lawn Spray). This product may be used against ticks on lawns and backyards. It is a hose sprayer kit for homeowner use. Fluvalinate (Mavrik Aquaflow, Yardex). Fluvalinate may be used against ticks on turf and ornamentals. This material is effective against blacklegged ticks. Permethrin (PermaKill 4Week Tick Killer). This material belongs to a class of pesticides called synthetic pyrethroids. It is labeled for use against ticks on the lawn. Permethrin is highly effective as a clothing toxicant against ticks. Be sure to follow label directions.

Your hydrangea is getting too much sun. As a result it is stressed and subject to all kinds of problems. Move your hydrangea to a spot where it will receive only morning sunshine (fall is best, or early spring). In the spring cut back the affected plant parts and the new growth should emerge healthy looking.

Best wishes with your landscape.

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