Species

French Lavender - Spring 2004

Flower Color, Plot Development Over Time, Data and Comments

Data and pictures will be added as time allows.

The first flower.

Lavender before flower development. When flowering is full, new pictures will replace these

Vinca

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Vinca

Botany

Family:	Lamiaceae
Scientific names:	Lavandula stoechas L.
Common names:	French lavender, Italian lavender, Spanish lavender and topped lavender [The Germplasm Resources Information Network (GRIN)].
Native habitat:	Africa - Macaronesia, in Portugal's Madeira Islands and Spain's Canary Islands; Northern Africa, in Algeria, Morocco and Tunisia.; Asia (temperate) in the Western Asian countries of Cyprus, Israel, Lebanon, Syria and Turkey. Naturalized in Australia and New Zealand (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: Four-lined plant bug (found in Florida), caterpillars, root-knot nematode with few pests are serious problems (Perry's Perennial Pages. Dr. Leonard Perry, Univ. of Vermont).
	Arthropod symptoms observed in this trial: We have observed whitefly on this crop, but they did not produce any deleterious symptoms during the trial.
Common plant diseases/other:	Reported disease symptoms in literature: Armillaria mellea root rot; Fusarium - root rot; Fusarium solani - wilt; Phoma lavendulae - stem blight; Phytophthora nicotianae- root rot; Phytophthora spp. - wilt; Pythium - root rot; Septoria lavandulae, leaf spot; Verticillium, wilt (Lavender, History, Taxonomy, & Production. Joe-Ann McCoy, North Carolina State University. 2001.)
	Diseases symptoms observed in this trial: No disease pests was observed.
Commercial control:	Greenhouse.	Field/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.

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

Flower Fields - Goldsmith Seeds

The Flower Fields

Grimes Seeds & Plants

Kieft Seeds Holland

E. Benary Seed of America

Purple (dark) blue-violet class

Picture date:	1 May (week 11¹)	14 May (week 13)	31 May (week 15)
'Sancho Panza'	Plot B Plot A Sprayed Field Unsprayed Field	Plot B Sprayed Field Unsprayed Field	Plot B Sprayed Field Unsprayed Field
Cultivar No: 165

Sahin
Picture date:	Long after trials - Nov. 26.

Seed Sowing Date	Flower Diameter²	Days to First Flower³	Overall Foliage/Flower Rating⁴	Overall Pest Rating⁵	Overall Performance Rating⁶
13 Feb.	No data taken.	116	4.3	7.0	5.6/3.6^

Honors: Best-of-class, uncontested.

Comments: New for spring 2004. ^The average flower rating was only 2.0. ‘Sancho Panza’ was uncontested best-of-class and had a very good adjusted overall performance rating, due to the very high foliage and pest ratings; however, this rating had to be further adjusted due to very poor flowering. After sowing, germination seemed erratic, and an extra flat was sown directly; but enough plants emerged over time to sufficiently fill and produce a very uniform flat and plants with very good root systems. ‘Sancho Panza’, (first bloom: 116 days to bloom), a species that normally would bloom in summer, initiated flowering in mid June, stopped by early July and was not showing flowers in mid September, long after the trial ended; foliage was healthy and continuing to grow. Long after trials ended (late Nov.), this species was one of the few species with with all plots growing.

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. Measured in centimeters and inches [cm (inches)].

3. Average number of days from sowing to unfurling of the first flower in the plots. Flowering for alyssum was completed in the flat prior to planting in the field. Values with an "a" are considered significantly greater than those with a "b", "c", etc., and those without a letter are not considered to be significantly different.

4. The average of the combined foliage and flower data in the sprayed field as an expression of cultivar quality. Values with an "a" are considered significantly greater than those with a "b", "c", etc., and those without a letter are not considered to be significantly different.

5. The average of the combined foliage and flower data in the unsprayed field as an expression of arthropod and disease symptoms. Values with an "a" are considered significantly greater than those with a "b", "c", etc., and those without a letter are not considered to be significantly different.

6. The average of the combined overall foliage/flower rating and overall pest rating. If plant death from a soilborne pathogen resulted, this was factored into the rating. Values with an "a" are considered significantly greater than those with a "b", "c", etc., and those without a letter are not considered to be significantly different. See Articles, Papers & Reports for further explanation in the reports. ^Two ratings for overall performance (OP): OP/adjusted OP^. Though absence of pest symptoms is important, good flower and foliage characteristics are the primary focus in selecting the best cultivar, the overall pest rating is often much higher than the “overall foliage/flower rating”. If an average foliage, flower or fruit rating for any of the plots is unacceptable (< 4.0), but the overall pest rating (P) is acceptable (> 4.0), we adjust the overall performance rating for each plot to lower the weight of P, penalizing the cultivar by 0.1 point increments for very 0.1 decrease in the rating as follows: -3.0 points for a rating of 1 to -0.1 for a rating of 3.9. This example follows (using avg. flower rating (Fl_avg)]: if OP = 5 for a plot and Fl_avg = 1 for that plot, then OP^ = 2.0 instead of 5; if OP = 6 and Fl = 2.6, then OP^ = 4.6 instead of 6, and so forth. All the plot ratings for the cultivar are then re-analized and both OP and OP^ ratings listed for comparison. The differences may be too small to show differences between OP^ and OP. The OP is actually OP_adj(adjusted overall performance rating) in the paper, an adjustment made before OP^ to account for plant death from soilborne pathogens.

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