This article is a list of diseases of poinsettia (Euphorbia pulcherrima).
This article is a list of diseases of poinsettia (Euphorbia pulcherrima).
This also includes oomycetes
| Disease | Cause | Image |
|---|---|---|
| root-knot nematode | Meloidogyne spp. |  |
| Disease | Cause | Image |
|---|---|---|
| mosaic | Euphorbia mosaic virus | |
| mosaic | Poinsettia mosaic virus | |
| (symptomless) | Poinsettia latent virus |
| Miscellaneous diseases and disorders | |
|---|---|
| Bleaching necrosis | Air pollutant injury from either chlorides (> 0.5 ppm), nitrogen dioxide (> 2-3 ppm) or sulfur dioxide (> 0.5 ppm) |
| Bract necrosis | Physiological disorder favored by high humidity, heavy watering and high (ammoniacal) fertility rates in the last 4 weeks of production |
| Chlorosis | Nitrogen deficiency producing a general foliar yellowing Molybdenum deficiency affecting mature young leaves and producing upward leaf roll |
| Cyathia drop | Response to low light conditions, dryness and/or high temperatures at the end of the production cycle |
| Dropping (epinasty) | Ethylene toxicity (< 1 ppm) or low temperature chilling |
| Edema | Physiological |
| Interveinal chlorosis | Magnesium deficiency, initiating on older leaves Manganese deficiency, initiating on young mature leaves |
| Latex eruption | High internal turgor pressure associated with certain cultivars, high humidity, high moisture availability, low temperatures and/or mechanical abrasion |
| Leaf glazing (bronzing) | Peroxyacetyl nitrate (PAN) injury to the lower epidermis (> 0.2 ppm) |
| Marginal necrosis | Potassium deficiency Fluoride toxicity on tips and margins of young leaves and bracts (0.4 ppm in water) |
| Stem splitting | Physiological expression of flower initiation |
| Stippling | Ozone injury (> 4 ppm) |
| Terminal shoot necrosis | Excessive soluble salts (> 800 EC X 102) |
| White bract | Chilling injury occurring between 0–10 °C (32–50 °F) |
The poinsettia is a commercially important plant species of the diverse spurge family (Euphorbiaceae). Indigenous to Mexico and Central America, the poinsettia was first described by Europeans in 1834. It is particularly well known for its red and green foliage and is widely used in Christmas floral displays. It derives its common English name from Joel Roberts Poinsett, the first United States Minister to Mexico, who is credited with introducing the plant to the US in the 1820s. Poinsettias are shrubs or small trees, with heights of 0.6–4 m (2.0–13.1 ft). Though often stated to be highly toxic, the poinsettia is not dangerous to pets or children. Exposure to the plant, even consumption, most often results in no effect, though it can cause nausea, vomiting, or diarrhea.
Scab may refer to:
Floriculture, or flower farming, is a discipline of horticulture concerned with the cultivation of flowering and ornamental plants for gardens and for floristry, comprising the floral industry. The development, via plant breeding, of new varieties is a major occupation of floriculturists.
The Poinsettia Bowl was a post-season NCAA-sanctioned Football Bowl Subdivision college football bowl game played in San Diego, California, United States from 2005 to 2016. The game was originally played from 1952 to 1955 between military services teams; in 2005 it was re-created by the organizers of the Holiday Bowl. The new Poinsettia Bowls were played in late December each year at SDCCU Stadium in San Diego, California. The game's last sponsor was the San Diego County Credit Union, and it was named the San Diego County Credit Union Poinsettia Bowl.
Botryotinia fuckeliana is a plant pathogen, and the causal agent of gray mold disease.
Pseudomonas marginalis is a soil bacterium that can cause soft rots of plant tissues. It infects poinsettia, lettuce, and crucifers.
Theliaviopsis basicola is the plant-pathogen fungus responsible for black root rot disease. This particular disease has a large host range, affecting woody ornamentals, herbaceous ornamentals, agronomic crops, and even vegetable crops. Examples of susceptible hosts include petunia, pansy, poinsettia, tobacco, cotton, carrot, lettuce, tomato, and others. Symptoms of this disease resemble nutrient deficiency but are truly a result of the decaying root systems of plants. Common symptoms include chlorotic lower foliage, yellowing of plant, stunting or wilting, and black lesions along the roots. The lesions along the roots may appear red at first, getting darker and turning black as the disease progresses. Black root lesions that begin in the middle of a root can also spread further along the roots in either direction. Due to the nature of the pathogen, the disease can easily be identified by the black lesions along the roots, especially when compared to healthy roots. The black lesions that appear along the roots are a result of the formation of chlamydospores, resting spores of the fungus that contribute to its pathogenicity. The chlamydospores are a dark brown-black color and cause the "discoloration" of the roots when they are produced in large amounts.
Phytophthora drechsleri is a plant pathogen with many hosts.
Sphaceloma poinsettiae is a fungal plant pathogen. It causes poinsettia scab, which is a spot anthracnose disease.
The 2007 Poinsettia Bowl was a post-season American college football bowl game between the Navy Midshipmen and the Utah Utes played on December 20, 2007, at Qualcomm Stadium in San Diego, California. Utah defeated Navy 35–32 in a game that came down to the final seconds. The third edition of the Poinsettia Bowl was the first of 32 games in the 2007–2008 bowl season and the final game of the 2007 NCAA football season for both teams.
The 2008 San Diego County Credit Union Poinsettia Bowl was the fourth edition of the college football bowl game, and was played at Qualcomm Stadium in San Diego, California. The game started at 5 PM US PST on Tuesday, December 23, 2008. The game, simulcast on ESPN and ESPN Radio with Rece Davis, Mark May, and Lou Holtz announcing, pit the Boise State Broncos against the Texas Christian Horned Frogs. In the game, TCU overcame a 13–0 deficit to pull off an impressive 17–16 win over Boise State.
The 2005 San Diego County Credit Union Poinsettia Bowl was a post-season college football bowl game between the Colorado State Rams and the Navy Midshipmen on December 22, 2005 at Qualcomm Stadium in San Diego, California, United States. The game, which the Midshipmen won with a score of 51–30, was the inaugural edition of the Poinsettia Bowl.
The 2010 San Diego County Credit Union Poinsettia Bowl was a post-season college football bowl game between the San Diego State Aztecs and the Navy Midshipmen on December 23, 2010 at Qualcomm Stadium in San Diego, California. The sixth edition of the annual Poinsettia Bowl, which the Aztecs won 35–14, began at 5:00 PM PST and was broadcast on ESPN.
Ravensworth Nurseries Ltd, is an English horticultural business and garden centre located in Ravensworth, North Yorkshire.
The 2012 San Diego County Credit Union Poinsettia Bowl is a post-season American college football bowl game held on December 20, 2012 at Qualcomm Stadium in San Diego, California in the United States. The eighth edition of the Poinsettia Bowl began at 5:00 p.m. PST and aired on ESPN. It featured the Mountain West Conference co-champion San Diego State Aztecs against the BYU Cougars, and was the final game of the 2012 NCAA Division I FBS football season for both teams. The Cougars accepted their invitation after earning a 6–4 record in their first ten games of the season, while the Aztecs accepted their invitation after finishing with a 9-3 record in their season
The Poinsettia Fire was the second most destructive of the May 2014 San Diego County wildfires. It caused property damage estimated at $22.5 million, as well as the only reported fatality in the San Diego County series of wildfires. As of July 10, 2014, the cause of the fire is listed as "undetermined", which allows for further investigation if more information comes to light.
The 2014 Poinsettia Bowl was post-season American college football bowl game held on December 23, 2014, at Qualcomm Stadium in San Diego, California. The tenth edition of the Poinsettia Bowl pitted the Navy Midshipmen against the San Diego State Aztecs of the Mountain West Conference. The game began at 6:30 p.m. PST and aired on ESPN. It was one of the 2014–15 bowl games that conclude the 2014 FBS football season. The game was sponsored by the San Diego County Credit Union and is officially known was the San Diego County Credit Union Poinsettia Bowl.
The 2015 Poinsettia Bowl was a college football bowl game that was played on December 23, 2015 at Qualcomm Stadium in San Diego, California. Boise State Broncos from the Mountain West Conference defeated the Northern Illinois Huskies from the Mid-American Conference. It was one of the 2015–16 bowl games that concluded the 2015 FBS football season. The game started at 1:30 p.m. PST and was televised on ESPN. Sponsored by San Diego County Credit Union, the game is officially known as the San Diego County Credit Union Poinsettia Bowl.
The 2016 Poinsettia Bowl was a college football bowl game played on December 21, 2016 at Qualcomm Stadium in San Diego, California. The twelfth and final edition of the Poinsettia Bowl featured the BYU Cougars against the Wyoming Cowboys. It began at 6:00 PM PST and aired ESPN. It was one of the 2016–17 bowl games concluding the 2016 FBS football season. Sponsored by San Diego County Credit Union, the game was officially known as the San Diego County Credit Union Poinsettia Bowl. This was the final edition of the Poinsettia Bowl as the bowl's operator, the San Diego Bowl Game Association, elected to cancel the game to focus its efforts on the Holiday Bowl.
