Roses are a popular landscape and garden plant in Indiana. Black spot, caused by the fungus Diplocarpon rosae, is the major foliar disease of roses in Indiana. Infected leaves develop black spots, turn yellow and drop prematurely from the plant. Premature defoliation decreases plant energy reserves and results in reduced flowering of roses as well…Read more about Reduce Defoliation From Rose Black Spot[Read More]
Resources for landscapes and gardens in the Midwest
Landscape Report
There is much speculation on why trees finally just go past the point of no return and die. There are many causes of tree death, but the most common is environmentally induced death often aggravated by some opportunistic pest. However, how the tree dies, well, that’s a scientific and physiological process.
Japanese maple scales (JMS) attack a wide variety of trees and shrubs. They are common on dogwood, elms, flowering fruit trees, maples, magnolias, lilac and roses. Heavy infestations can kill tree branches. Unlike the closely related soft scales, these insects will be dry and not coated with sticky liquid excrement. All stages of this scale…Read more about Getting a Grip on Japanese Maple Scale[Read More]
It is the policy of the Purdue University that all persons have equal opportunity and access to its educational programs, services, activities, and facilities without regard to race, religion, color, sex, age, national origin or ancestry, marital status, parental status, sexual orientation, disability or status as a veteran. Purdue is an Affirmative Action Institution. This material may be available in alternative formats. 1-888-EXT-INFO Disclaimer: Reference to products in this publication is not intended to be an endorsement to the exclusion of others which may have similar uses. Any person using products listed in this publication assumes full responsibility for their use in accordance with current directions of the manufacturer.
Sign-up to receive email news and alerts from Purdue Landscape Working Group:
This is US
For More Information
Purdue Home Page
Purdue Extension
Find your county office
