Canna

Canna - Spring 2005

Flower Color, Plot Development Over Time, Data and Comments

Vinca

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Vinca

Botany
Family:	Cannaceae
Scientific names:	Canna ×generalis L. H. Bailey [The Germplasm Resources Information Network (GRIN)].
Common names:	Canna-lily, common garden canna (GRIN).
Native habitat:	(GRIN).
	View maps related to habitat and other topics from this link to the National Geographic MapMachine: .
Pests
Common plant arthropods (insects/other)/other:	Reported arthropod symptoms in literature: larger canna leafroller (Featured Creatures. University of Florida.).
	Arthropod symptoms observed in this trial: In 2002, no pest was observed.
Common plant diseases/other:	Reported disease symptoms in literature: Puccinia thaliae (leaf spot) and Xanthomonas cannae (bacterial leaf spot) (Index of Plant Diseases in Florida. 1984. Division of Plant industry. Bulletin 11).
	Diseases symptoms observed in this trial: After the 2002 trail, rust was observed, but only after planting remained in ground for more than one season as a perennial.
Commercial control:	Greenhouse.	Feld/shade house.
Arthropod information:	Pests identified on crops. Search the Arthropod/Host Plant Database.		Florida pest facts and images. Featured Creatures
Disease information:	Plant Disease Facts (Pennsylvania State University) Ornamental Plant Disease Fact Sheets		The American Phytopathological Society Search Common Names of Plant Diseases
More Links and Information
Performance evaluations:	Trial reports and other publications.
More resources:	Additional information.

RATINGS

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.

American Takii

Ball Seed

Bodger Seeds

Floranova Plant Breeders

Goldsmith Seeds

Grimes Seeds & Plants

Kieft Seeds Holland

E. Benary Seed of America

Scroll down the page or click on the color of choice to view individual cultivars within a color class:

Dwarf yellow/Orange Class

Dwarf white Shades Class

Winter

Dwarf White Shades

Picture date:	15 July (week 10¹)	1 August (week 12)	15 August (week 16)	2 Sept. (week 19)
'Tropical White'	Plot A Plot C	Plot A Plot B Plot C	Plot A Plot B Plot C	Plot A Plot B Plot C
Cultivar No: 186

American Takii
Picture date:	15 July
	186 and 187

Seed Sowing Date	Flower Diameter	Days to First Flower²	Overall Foliage/Flower Rating³	Overall Pest Rating⁴	Overall Performance Rating⁵
4/25/2005	9.1 cm (3.6 inches)	83	3.9	5.9	4.9

Honors: Best-of-class, uncontested.

Comments: New entry for 2005. ‘Tropical White’ is uncontested best-of-class, and is said to be the first seed propagated white cultivar (click on flower pictures above). In the past, we experienced poor germination with ‘Tropical Yellow’. This year we used LASER-drilled seed for better germination; ‘Tropical White’ had 75 % germination from 128 seed. There is some variability in the white flower color (click on flower pictures above) from pure white to one flecked with pigment, but they are all attractive when the display is in good condition. There were a number of problems with this cultivar, when compared with its series member, ‘Tropical Yellow’. Flower numbers for ‘Tropical White’ were low early in the crop’s season (mid July here), compared to ‘Tropical Yellow; the number of flowers on a spike were fewer for ‘Tropical White’. Foliage was in good condition, but there were fewer stems breaks for ‘Tropical White’. Disease blighted leaves and became serious at the end of the canna trials (mid August) on this crop, and was more severe for ‘Tropical Yellow’ (see ‘Tropical White’).

Dwarf Yellow/Orange Class

Picture date:	15 July (week 10¹)	1 August (week 12)	15 August (week 16)	2 Sept. (week 19)
'Tropical Yellow'	Plot A Plot C	Plot A Plot B Plot C	Plot A Plot B Plot C	Plot A Plot B Plot C
Cultivar No: 187

American Takii
Picture date:	15 July	Blight and leaf spots found on both cultivars
	186 and 187

Seed Sowing Date	Flower Diameter	Days to First Flower²	Overall Foliage/Flower Rating³	Overall Pest Rating⁴	Overall Performance Rating⁵
4/25/2005	9.4 cm (3.7 inches)	73	4.6	5.8	5.2

Honors: Best-of-class, uncontested.

Comments: Uncontested best-of-class established in 2002. ‘Tropical Yellow’ was again uncontested best-of-class. We experienced poor germination for ‘Tropical Yellow’ in spring 2002, but this year we used LASER-drilled seed for better germination; ‘Tropical Yellow’ had 82 % germination from 128 seed. ‘Tropical Yellow’ had higher flower ratings because it bloomed earlier and had more numerous flowers in better condition than ‘Tropical White’, but later in the season flower condition worsened (fading became more pronounced in this striking color). Foliage showed more disease symptoms earlier than ‘Tropical White’. Disease blighted leaves and became serious at the end of the canna trials (mid August) on this crop, and was more severe for ‘Tropical Yellow’ (see "blight and leaf spots found on both cultivars" above).

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.

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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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