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Helenium - Spring 2005 |
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Flower Color, Plot Development Over Time, Data and Comments |
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Vinca |
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Vinca |
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Botany |
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| Family: | Asteraceae | ||
| Scientific names: | Helenium amarum (Raf.) H. Rock | ||
| Common names: | Bitter sneezeweed or bitterweed [The Germplasm Resources Information Network (GRIN)]; Spanish daisy (Atlas of Florida Vascular Plants - U. of South Florida); yellowdicks (The PLANTS Database, USDA). | ||
| Native habitat: |
Northern America in the southeastern United States in Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia; and in the south-central United States in Texas; also found in Southern America in the Caribbean in Cuba and Hispaniola (GRIN). |
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View
maps related to habitat and other topics from this link to the National
Geographic MapMachine:  . |
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Pests |
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| Common plant arthropods (insects/other)/other: | Reported arthropod symptoms in literature: | ||
| Arthropod symptoms observed in this trial: | |||
| Common plant diseases/other: | Reported disease symptoms in literature: | ||
| Diseases symptoms observed in this trial: | |||
| Commercial control: | Greenhouse. | Feld/shade house. | |
| Arthropod information: | Pests identified on crops. | Florida pest facts and images. | |
| Disease information: | Plant Disease Facts (Pennsylvania State University) | The American Phytopathological Society | |
| More Links and Information | |||
| Performance evaluations: | Trial reports and other publications. | ||
| More resources: | Additional information. | ||
| Honors: | Best-of-class (BC). We select the best performer in each class, based on the "overall performance rating". This rating may not be high, if the class does not perform well (indicating a possible need for improvement in the class). The rating may be significantly different from one or more members of the class. If two or more members of a class received the same highest overall performance rating, we used another rating (such as overall foliage/flower rating or flower average rating) to determine BC. If only one cultivar was entered in a class, it automatically becomes uncontested BC. BC is evaluated in future trials against the performance of new entries in the same class. Refer to a report in "Articles, Papers & Reports" for detailed information. In addition to BC, other "honors" received for these cultivars may be added to BC at a later date, time permitting. Seed companies may forward these honors (awards) to Rick Kelly. |
| Rating System: | The rating is a 1 to 7 scale: 7- all foliage and flowers free from defects; 4- average foliage and flower condition, minimal plant defects or pest damage to tissue, but still acceptable; 1- foliage and/or flowers with severe defects and/or severely infested with pests and damage unacceptable, making plant undesirable. Plant death due to soilborne pests may be factored into the overall performance rating, if it is a significant problem. Refer to a report in "Articles, Papers & Reports" for details. If listed, ratings with an "a" are the best in a class. If cultivars share the same letters, those ratings are considered to be similar to each other. If there are no letters, there is only one cultivar in a class or all the members of a class have similar ratings. |
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Scroll down the page or click on the color of choice to view individual cultivars within a color class: |
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Winter |
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Winter |
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Picture date: |
20 May (week 131) | 3 June (week 15) | 18 June (week 17) | ||||
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'Dakota Gold' |
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| Cultivar No: 21 | |||||||
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Picture date: |
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Seed Sowing Date |
Flower Diameter |
Days to First Flower2 |
Overall Foliage/Flower Rating3 |
Overall Pest Rating4 |
Overall Performance Rating5 |
| 4/18/2005 | 3.2 cm (1.3 inches) | 52 | 5.8 |
7.0 |
6.4 |
| Honors: Uncontested best-of-class. |
| Comments: New entry for 2005. This crop was an outstanding performer. It is listed as a Florida native and has not been evaluated in our best-of-class trials before. ‘Dakota Gold’ was uncontested best-of-class with outstanding overall performance. Foliage was very full and uniform, and flowers were numerous and evenly distributed over the plant. The plant centers opened up very slightly late in June. This plant’s bright green foliage was unique compared to any crops we’ve seen thus far, and should make this plant a very striking focal point in the landscape. No pest symptoms observed. |
| Details of performance for this cultivar will be posted on the web in "Articles, Papers & Reports" at the completion of this trial. These details will include ratings over the entire season and pest problems. |
| ROK |
| 1. The number of weeks from seed sowing to the date the plant was photographed. Photographs were taken in a field sprayed on demand as needed, after scouting for pests, and a field that is not sprayed at all. |
| 2. Average number of days from sowing to unfurling of the first flower in the plots. |
| 3. The average of the combined foliage and flower data in the sprayed field as an expression of cultivar quality; rating scale: 1 = poor to 7 = excellent (details above). |
| 4. The average of the combined foliage and flower data in the unsprayed field as an expression of arthropod and disease symptoms; rating scale: 1 = poor to 7 = excellent (details above). |
| 5. The average of the combined overall foliage/flower rating and overall pest rating; rating scale: 1 = poor to 7 = excellent (details above). If plant death from a soilborne pathogen resulted, this was factored into the rating. See Articles, Papers & Reports for further explanation in the reports. |
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