Diseases by Name
Diseases and problems are listed
in alphabetical order within categories. Each disease name is a hotlink
to further information.
*The most common diseases are starred.
If you are trying to identify what might be troubling your poinsettia,
these starred diseases might be a good place to start.
+The plus sign indicates that a file contains
images.
Bacterial Diseases:
Bacterial Blight = Bacterial Canker
Crown Gall
+ Erwinia Soft Rot = Bacterial Soft Rot
Greasy Canker
Xanthomonas Leaf Spot = Bacterial Leaf Spot
Environmental/Nutritional/Insect Diseases:
* + Bract Edge Burn = Bract Necrosis
Center Bud Drop
+Cycocel Damage
Ethylene Injury
Fungus Gnat Injury
+ Lateral Branches Breaking
Leaf Crippling
Leaf Drop
Nutrient and Soluble Salt Disorders
+ Poor Bract Color
Rabbit Tracks
* + Splitting = Premature Flower Initiation
Fungal Diseases:
Alternaria Leaf Spot & Blight
* + Botrytis Blight
Choanephora Wet Rot
Corynespora Leaf Spot
Fusarium Root Rot
Phytophthora Crown Rot
+ Powdery Mildew
* + Pythium Root Rot
* + Rhizoctonia Stem and Root Rot
Rhizopus Blight
Rust
Scab = Spot Anthracnose
+ Thielaviopsis Root Rot = Black Root
Rot
Viral Diseases:
+Poinsettia Mosaic Virus & Poinsettia Cryptic
Virus
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