Bitter rot of apple is a fungal disease commonly caused by two species known as Colletotrichum gloeosporioides and C. acutatum.
Mirlitons are susceptible to a common fungal disease called powdery mildew. Mirliton powdery mildew is caused by Podosphaera xanthii.
Louisiana's warm, humid weather encourages the development of several serious diseases that can damage rose bushes. This publication describes the major rose diseases found in Louisiana and offers disease management tips. (PDF Format Only)
Oleander leaf scorch (OLS) is a deadly disease of oleander that was first reported in California in the early 1990s.
Native pollinators have evolved close associations with the plants specific to their native regions.
A number of common vegetable and fruit plants can serve a dual function of providing food and habitat specifically for native pollinators.
In Louisiana, Canary Island date palm (Phoenix canariensis Hort. Ex Chabaud) is a signature palm planted in New Orleans and nearby cities.
Rose rosette disease is caused by a virus known as Rose rosette virus. It is a devastating disease of roses – particularly since all cultivars are susceptible.
Downy mildew of sweet basil is a destructive disease that was first detected in the United States in 2007.
Citrus greening, also known as yellow shoot disease or huanglongbing, is one of the most devastating diseases of citrus worldwide.
Lichens are fascinating plants. They are composed of two different organisms – a fungal partner and a photosynthetic partner living in a symbiotic relationship.
Bacterial gall on Loropetalum (Loropetalum chinense) is caused by a plant pathogenic bacterium called Pseudomonas savastanoi.
Sweet olive is susceptible to a bacterial disease called leaf scorch, which is caused by Xylella fastidiosa.
Boxwood blight, also known as box blight, is a fungal disease caused by Calonectria pseudonaviculata (Cylindrocladium pseudonaviculata, C. buxicola).
Like Spanish moss, ball moss is an epiphyte and belongs to family Bromeliaceae.
Citrus canker is a bacterial disease caused by Xanthomonas citri subsp. citri. It is thought to have originated in Southeast Asia.
Large patch is the most common disease of warm-season turfgrasses in Louisiana. This disease is caused by the soilborne fungus Rhizoctonia solani.
This publication is intended to introduce home vegetable gardeners to the various methods used to manage the many diseases that affect these crops. (PDF Format Only)
Rosette disease is a destructive fungal disease of blackberries in Louisiana.
Bacterial gall on Loropetalum (Loropetalum chinense) is caused by a plant pathogenic bacterium called Pseudomonas savastanoi. The bacterium is also known to cause galls/knots on olives and oleanders. Other important known hosts include ash, privet and forsythia.
In Louisiana, Canary Island date palm (Phoenix canariensis Hort. Ex Chabaud) is a signature palm planted in New Orleans and nearby cities. In 2009, a lethal disease called Fusarium wilt was detected on Canary Island date palms in Louisiana. The disease, which is caused by a soil-borne fungus called Fusarium oxysporum f. sp. canariensis, previously had been known to occur in California, Florida and Nevada.
Rose rosette disease is caused by a virus known as Rose rosette virus. It is a devastating disease of roses – particularly since all cultivars are susceptible, including Knock Out roses and wild multiflora roses (Rosa multiflora).
This fact sheet is intended to aid in the identification and management of phytophthora blight on peppers
Rose rosette disease is caused by a virus. It is a devastating disease of roses – particularly since all cultivars are susceptible, including Knock Out roses and wild multiflora rose. Although rose rosette disease produces unique symptoms on roses, those symptoms can be easily confused with symptoms caused by other diseases, pests, stresses and other factors. (PDF format only)
Pecan spittlebugs are found throughout the pecan-producing regions of Louisiana and can be a serious pest. The severity of infestations varies from year to year and from orchard to orchard. Life cycle, type of injury and control information are included. (PDF Format Only)
Downy mildew is a potentially devastating disease of all cucurbits. Disease symptoms, development, control measures and color photographs of symptoms on pumpkin, cucumber and watermelon are included. (PDF format only)
Two species of yellow aphids are found on pecans in Louisiana and in all pecan-producing states. Descripton, life cycle, damage and control information is included. (PDF Format Only)
Pecan phylloxera are found throughout the native pecan-producing regions of the United States. Beginning in mid-April, galls (knots) begin to appear on the leaf veins, leaf rachises, catkins, current season's shoot growth and nuts of the pecan. Damage, description, life cycle and control information is included. (PDF Format Only)
Louisiana is blessed with long growing seasons that make year-round gardening possible. To be successful, however, you must have an insect management program. Learn how to tell if the insect is beneficial to your garden or if it is a pest, and determine what to use if controls are necessary. (PDF format only)
Wireworms are found throughout North America and most of the world. They are among the most difficult and destructive pests to control and the most widespread pests of corn, sod, small grains, sugarcane, potatoes, root crops and vegetables. Descriptions, life history, habits and control measures included. (PDF Format Only)
This 52-page pocket guide is designed to help you identify pests commonly found in and around buildings. It includes photos and information about various pests, such as ants, roaches, flies, rats, mice, termites, spiders, wasps, bees, bedbugs, fleas, mosquitoes, ticks and more. Diagrams and scales showing the size of some of the pests are included to help in identification. A spiral-bound, heavyweight, coated-paper copy is available for $12.
The black pecan aphid is found throughout Louisiana and most pecan-producing states. Description, life cycle, damage and control information included. (PDF Format Only)
Properly identifying the ant species is the first step in determining whether and how to control them. In this publication there are options for managing various kinds of imported fire ant problems.
Mole crickets cause millions of dollars in turf and grass damage each year. Their burrowing in the soil breaks up the soil and causes roots to dry out. Identification, life cycle and control included. (PDF format only)
The walnut caterpillar attacks a variety of deciduous trees, with a preference for walnut, pecan, butternut and hickory. Descriptions, control measures and color image included. (PDF Format Only)
Fleas developed on Earth thousands of years ago and have adapted many survival techniques. In Louisiana, they are pests in and around homes and on pets and other animals year round. Control measures and insecticides to use included. (PDF Format Only)
Africanized honeybees were brought to Brazil in 1956 to improve local strains. In 1957, several colonies escaped. Once established in Brazil, the Africanized honeybees moved north up the east coast of South America and into Central America. During the next few years, they increased their northward expansion through central Texas, New Mexico and Arizona, reaching Southern California in 1994. (PDF format only)