D-01Table01














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Table 1. The flowering and harvest dates, the seed maturation rating, and the germination and yield components of the wildflower species evaluated in 1994.

Species

Flowering Date

Harvest Date

SMRz

% germ.

yield lbs/A

viable seed yield lbs/A

Cat.y

Silene armeria

4-Apr

26-May

1

100

1122

1122

I

Hesperis matronalis

14-Apr

1-Jul

2

98

2658

2605

I

Monarda citriodora

29-Apr

18-Jul

1

78

1426

1112

I

Coreopsis tinctoria

26-Apr

21-Jun

1

63

293

185

II

Bidens aristosa

19-Aug

20-Oct

1

59

70

41

II

Rudbeckia hirta

18-May

26-Jul

1

53

944

500

II

Centaurea cyanus

11-Mar

9-Jun

2

50

1646

823

II

Ipomopsis rubra

18-May

2-Sep

1

45

5112

2300

II

Gypsophilia muralis

18-May

21-Jun

2

68

176

120

II

Chrysanthemum
leucanthemum

23-Mar

18-May

4

22

120

27

II

Achillea millefolium

29-Apr

1-Jul

2

10

169

17

III

Coreopsis lanceolata

22-Apr

5-Jun

4

43

326

140

III

Cosmos bipinnatus

26-May

12-Aug

5

0

935

0

III

Cosmos sulphureus

18-May

26-Jul

5

48

228

110

III

Eschscholzia
californica

8-Mar

5-Jun

4

28

132

37

III

Gaillardia aristata

29-Apr

10-Sep

3

14

227

32

III

Gaillardia pulchellaq

29-Apr

24-Jun

3

20

783

157

III

Oenothera speciosa

4-Apr

26-May

2

0

270

0

III

Papaver rhoeas

4-Apr

9-Jun

1

0

55

0

III

Phlox drummondii

8-Mar

5-Jun

5

68

414

281

III

Salvia coccinea

5-Jun

2-Sep

5

68

249

20

III

Verbena tenuisecta

8-Mar

18-May

5

5

42

2

III

zSeed maturation ratings (SMR) were based on a scale of 1 to 5 with 1=85% to 100% of seeds mature at one time, 2=60% to 84% of seeds mature at one time, 3=seeds mature over a period of weeks, seed heads remain intact, 4=seeds mature and shatter over a period of 2 to 4 weeks, and 5=seeds mature and shatter over a period of 4 to 8 weeks.

yCategories for the potential commercial seed production species were as follows: I=excellent potential: seed maturation rating 1 or 2, and germination > 75%, II=moderate potential: seed maturation rating 1,2,3,or 4, and germination > 44%, III= low potential: seed maturation rating 5, and/or germination < 45%.


The mission of Clemson University's Department of Horticulture is to promote personal and professional growth through the discovery, communication, and application of horticultural experiences, knowledge, and scholarship. Our work fosters environmental stewardship while improving economic wellbeing, health, and quality of life for all.

Designed by Sarah Matzko Horticulture Department
College of Agriculture, Forestry and Life Sciences
Information: 864-656-6355 FAX: 864-656-4960

Department of Horticulture
E-143 Poole Agricultural Center
Box 340319
(Street Address: 50 Cherry Rd.)
Clemson University
Clemson, South Carolina 29634-0319

Linda D. Alexander, Department Webmaster ( lalxndr@clemson.edu)