Category Archives: Diseases

Fusarium Wilt

Fusarium is a soil-borne fungus that can survive for a decade or more in dormant stages. It enters the plant through roots and invades its water distribution network, where the fungi partially or completely block the vascular tissues, usually by gum-like formations, causing wilting and eventually death of the plant. General Description Widespread fungus that affects a wide […]

White Mold of Tomato & Pepper Plants

Quick Intro Physical Description Fungal wilt disease that starts as water-soaked spots on stems, then white moldy growth appears on the stems and then the branches wilt Species & Taxonomy Kingdom: Phylum: Class: Order: Family: Genus Species: Lifecycle   Plants Affected peppers tomatoes Plants Unaffected   Geographical Range   Signs & Symptoms Whole Plant water-soaked […]

Southern Blight

Fungal disease that spreads in hot, moist weather. Physical Description Southern blight can be seen as cottony white mold on the soil at the stem base of plants. Species & Taxonomy Kingdom: Phylum: Class: Order: Family: Genus Species: Lifecycle   Plants Affected ¬†Peppers Plants Unaffected   Geographical Range   Signs & Symptoms Whole Plant White […]

Soft Rot

Quick Intro Physical Description Bacterial disease of the fruit or tubers of a vegetable, characterized by watery and soft decay of the tissue. Species & Taxonomy Kingdom: Phylum: Class: Order: Family: Genus Species: caused by several types of bacteria, but most commonly: Erwinia Pectobacterium Pseudomonas Lifecycle These pathogenic bacteria can grow at a wide range […]

Powdery Mildew

Powdery mildew on Lavender Bergamot (Monarda fistulosa)

Powdery mildew is a common fungal disease that effects many types of plants, and is fairly easy to manage. It causes poor growth and lower yields, but seldom kills the plant. There are many different species of powdery mildew that cause the disease on many different species of plants. See list of species and their […]

Phytophthora Blight

Quick Intro Physical Description Soil borne fungal disease that affects foliage and fruits. Species & Taxonomy Kingdom: Phylum: Class: Order: Family: Genus Species: Lifecycle   Plants Affected   Plants Unaffected   Geographical Range   Signs & Symptoms Whole Plant Leaves Flowers Fruit on peppers: spots form on the pepper with white mold present Roots/Tubers How […]

Tobacco Mosaic Virus

Quick Intro Species & Taxonomy Kingdom: Phylum: Class: Order: Family: Genus Species: Lifecycle   Plants Affected   Plants Unaffected   Geographical Range   Signs & Symptoms Whole Plant stunted plants twisted growth Leaves yellow mottling of leaves Flowers Fruit Roots/Tubers How to Positively Identify Treatment Prevention & Control   Cultural Controls: Habitat: Temperature & Humidity: […]

Fungal Foot Rot

Physical Description Fungal foot rot causes the plant to wilt; if the roots are wet & brown, then it’s probably root rot (VGPS) Species & Taxonomy Kingdom: Chromalveolata Phylum: Heterokontophyta Class: Oomycetes Order: Peronosporales Family: Pythiaceae Genus Species: Phytophthora Plants Affected   Plants Unaffected   Geographical Range   Signs & Symptoms Whole Plant generalized wilting Leaves Flowers Fruit Roots wet & […]

Early Blight

Also known as Alternaria Blight. Physical Description Early blight begins as light-colored spots on leaves, eventually leading to the leaves dying and falling off. Google Images Species & Taxonomy Kingdom: Phylum: Class: Order: Family: Genus Species: Alternaria solani Lifecycle   Plants Affected tomatoes potatoes peppers (not a serious problem in peppers, but if it appears, […]