Tulip Cultivars with Potential for Perennialization in North America 1.
|
Spring |
Flower Colors |
Cultivar Name |
Average |
1990 USDA |
| Very Early | Red | Showwinner | 6-8 | 8 |
| . | Red/Yellow | Stresa | 6-8 | 8 |
| . | Purple | Demeter | 12-14 | 6-8 |
|
Early |
White | Purissima(White Emperor) | 10-12 | 7-8 |
| . | Yellow | Yokohama | 10-12 | 6-8 |
| . | Orange | Dillenberg Orange Emperor |
14-18 12-14 |
6 6 |
| . | Red |
Toronto |
8-10 | 6-8 |
| . | Red/Yellow | Queen of Sheba | 14-18 | 8 |
| . | Pink (Rose) | Christmas Marvel | 10-12 | 8 |
|
Middle |
White | Kansas | 14-18 | 6 |
| . | Yellow | Bellona Candela Golden Apeldoorn Golden Parade Hoangho Monte Carlo Yellow Dover Golden Oxford |
10-12 6-8 14-18 14-18 10-12 10-12 14-18 14-16 |
8 6-8 6-7 6-7 6 7 6-8 6-8 |
| . | Yellow/Red | Gudoshnik Jewel of Spring Striped Apeldoorn |
14-18 14-16 14-18 |
6-7 6-7 6-8 |
| . | Orange | Juan Orange Emperor Orange Sun |
10-12 10-12 12-14 |
6 8 6-8 |
| . | Red | Apeldoorn Diplomate Frankfurt Hollands Glorie Ile de France Margaret Herbst Oscar Oxford Parade |
14-18 14-18 14-18 14-18 14-18 12-14 12-14 14-18 14-18 |
8 6-8 6 6-7v6 8 6 6-8 7-8 |
| . | Red/Yellow | Beauty of Apeldoorn Kiezerskroon Los Angeles Thule |
14-18 10-12 14-16 12-14 |
6-8 6 6 6 |
| . | Red/White | Leen van der Mark Lucky Strike Merry Widow Princess Victoria Spring Song |
12-14 14-16 14-16 14-16 14-18 |
6 7 6-7 6 6-8 |
| . | Pink(Rose) | Blenda Don Quichotte Preludium |
10-12 14-18 10-12 |
6 8 6 |
| . | Purple | Negrita | 12-14 | 6 |
|
Late |
White | Maureen | 14-18 | 7 |
| . | White/Pink | Douglas Baader Make Up |
14-18 14-16 |
6 6 |
| . | Yellow |
West Point |
14-18 | 6-7 |
| . | Orange | Orange Bouquet Jimmy |
12-14 12-14 |
7 6-7 |
| . | Red | Balalaika Bing Crosby Dyanito Oriental Beauty Red Matador Renown Rosy Wings |
14-18 12-14 12-14 12-14 10-12 14-18 14-18 |
8 6 6 6 7 8 7 |
| . | Red/Yellow | Ad Rem Kees Nelis |
10-12 12-14 |
6 6-7 |
| . | Red/White | Ballade Karel Doorman |
14-18 12-14 |
6 6 |
| . | Pink(Rose) | Angelique Gordan Cooper |
10-12 14-16 |
8 6-7 |
| . | Purple | Prince Charles | 12-14 | 6 |
| . | Purple/White | Arabian Mystery Dreaming Maid |
14-16 14-16 |
6 |
|
Very Late |
Orange | Orange Favourite | 14-16 | 7-8 |
| . | Red(Wine) | Burgundy Lace | 14-18 | 7 |
| . | Pink(Rose) | Sorbet | 14-18 | 7 |
1 Reference: Nelson, P.V. 1988. Spring-Flowering Bulbs: Trials in North Carolina. N.C. Agr. Res. Ser. Bulletin No. 476.
2 Only climatic zones 6, 7, and 8 were used in Dr. Nelson's trials.