| Cultivar | Group | Type | Hardy | Color | Bloom Time | |
|---|---|---|---|---|---|---|
|
‘J Jackson’ | Stewart | evg | Zone 7 | Early Midseason | |
| ‘J. T. Lovett’ | R. indicum | evg | ||||
|
‘Jack Cowles’
(Peach behind Car Barn) | Cowles | elp | -15° F | Pink-Light,Yellow | Midseason |
|
Jack Melton | Sommerville | dec | Red | ||
| Jack Owen Yates | Yates | elp | -12° F | Burgundy,Magenta,White | Late Midseason | |
| Jack-o-lantern | Rhein | elp | -25°F | Yellow | Early Midseason | |
|
Jacksonii | Herbert | elp | -18° F; Zone 6b | Pink | Early Midseason |
|
‘Jacob Allen’ | Aromi | dec | |||
| ‘Jacob Summers’ | Holly Springs | evg | ||||
|
‘Jake Frey’ | Stewart | evg | 0˚F | Purple,Red,White | Early Midseason |
|
Jake's Red | Species Selection | dec | |||
|
Jamboree | Glenn Dale | evg | Hardy to -5 F/Zone 7 | Early Midseason | |
|
James Dunlop | Linwood | evg | -10 F | Pink | |
|
‘James Scott’ | Klimavicz | evg | 0°F, Zone 7 | Pink,Purple,White | Late Midseason |
|
‘James Stewart’ | Stewart | evg | Zone 7, at least | Pink-Dark,Purple,White | Midseason |
|
Jan | Greenwood | evg | 0 F | Red,Purple | Midseason |
|
‘Jane Abbott Pink’ | Mezitt | dec | |||
|
Jane Geiselman | Eden | evg | Zone 6 | Midseason | |
|
‘Jane Kinzie’ | Stewart | evg | Zone 7 | Early Midseason | |
|
‘Jane Newman’ | Stewart | evg | Zone 7 | Purple,Red,White | Early Midseason |
|
‘Janet Blair’ | Dexter/Leach | elp | -15 F | Midseason | |
|
Janet Flick | Kehr | evg | 0 F | Pink,Purple | Late Midseason |
| ‘Janet Harris’ | Marshy Point | evg | White | |||
|
‘Janet Miller’ | Stewart | evg | Zone 7 | Pink,Yellow,White | Early Midseason |
|
Janet Noyes | Glenn Dale | evg | |||
|
‘Janet Rhea’ | Linwood | evg | Hardy to 0 F. | Pink,Purple,White | Midseason |
|
Janet's Flair | Brack | elp | -5° F, at least | Pink-Light,Purple,Yellow | Midseason |
|
‘Jane's Gold’ | Aromi | dec | |||
| Jane’s Orange | Goodrich | elp | Salmon | |||
| Janice Lynn | Roslyn | evg | ||||
| Japanese Maple | TBD | cmp | ||||
|
‘Jasmine’ | Kohli | evg | |||
| ‘Jay Murray’ | Lewis | lep | ||||
|
‘Jay Valentine’ | Harris | evg | -10 F | Red | Early Midseason |
|
‘Jean Beaudry’ | Stewart | evg | Zone 7 | Purple | Early Midseason |
|
‘Jean L. Pace’ | Stewart | evg | Zone 7 | Pink,Purple | Early Midseason |
|
Jeanne | Feldyk | evg | Purple | ||
|
‘Jeanne Bogenrief’ | Kohli | evg | |||
| Jeanne Weeks | Robin Hill | evg | ||||
|
Jeannin | Glenn Dale | evg | |||
|
‘Jean's Spider’ | Jean Cox | evg | Zone 7 | Lavender | |
|
‘Jeffery Alan’ | Holly Springs | evg | -5 F | Red,Salmon | Late Midseason |
|
‘Jen Brouse’ | Brouse | elp | Zone 7, at least | Early Midseason | |
| ‘Jennifer’ | Kurume | evg | ||||
| ‘Jennifer’ | Dodd/Southern Indian | evg | Red | Early | ||
|
‘Jennifer Nicole’ | Stewart | evg | 0˚F | Pink,Purple | Midseason |
|
Jenny Maphis | Strickland | dec | USDA 6b: to -20.5 °C (-5 °F) approx. | Orange,Yellow | |
|
‘Jenny Tabol’ | Tabol | elp | Zone 7, at least | Yellow | |
|
‘Jerry Goodman’
(RBS 118) | Stewart | evg | Zone 7 | Purplish-Red | Early Midseason |
|
Jesse Benton | Strickland | dec | USDA 6b: to -20.5 °C (-5 °F) approx. | Yellow | Early |
|
Jessica | Glenn Dale | evg | |||
|
‘Jessica's Jewel’ | Holly Springs | evg | -5 F | Late | |
| JG-1
(2-93, 64-87) | Cowles | elp | ||||
|
‘Jill McDowell’ | Holly Springs | evg | -5 F | Late Midseason | |
|
‘Jim Baggette’ | Holly Springs | evg | -5 F | Midseason | |
| ‘Jim Lynch’ | C&T Nursery | elp | ||||
|
‘Jim McCeney’ | Stewart | evg | Zone 7 | Early Midseason | |
|
‘Jim Thornton’ | Stewart | evg | Zone 7 | Early Midseason | |
| Jim Todd | Todd | elp | ||||
| ‘Jindai’ | Satsuki | evg | Zone 7 | |||
|
Jingle | Glenn Dale | evg | Zone 7, at least | Early | |
| JL-09-19 | Klimavicz | evg | Zone 7 | Midseason | ||
|
‘Joan Garrett’ | Harris | evg | Pink | ||
|
‘Joanne Neckel’ | Stewart | evg | Zone 7 | Early Midseason | |
|
‘Joe Coleman’ | Stewart | evg | Zone 7, at least. | Purple,Red,White | Early Midseason |
| Joe Gable | Gable | elp | ||||
|
‘Joe Klimavicz’ | Stewart | evg | Zone 7 | Cream,Pink,Yellow,White | Midseason |
|
‘Joe Schild’
(RBS 207) | Stewart | evg | Zone 7 | Yellowish-Pink | Midseason |
|
‘Joga’
(Johga) | Satsuki | evg | Zone 7 | Pink,Purple,White | Late |
|
‘Johanna’ | R. kaempferi | evg | Zones 6-8 | Midseason | |
|
‘John Brockett’ | Linwood | evg | Purple,Red | ||
|
‘John Brown’ | Stewart | evg | Zone 7, at least | Pink,Rose,White | Midseason |
|
‘John C. White’ | Ring | elp | -10 F | Early Midseason | |
|
John Francis | Bowie Mill | evg | -12F | Midseason | |
|
‘John Migas’ | Stewart | evg | Zone 7, at least | Green,Yellow,White | Early Midseason |
|
‘John Paul II’ | Minahan | elp | -24° F | Red,Yellow | Midseason |
|
Joker | Glenn Dale | evg | |||
|
‘Jolie Madame’ | Boskoop | dec | |||
|
Jolly Jim | Cross | elp | 0° F | Yellow,White | Midseason |
|
Jonathan Shaw's Salmon | Shaw | elp | Cream,Pink | ||
|
Jongleur | Glenn Dale | evg | |||
|
Joseph Haydn | Vuyk | evg | Purple | ||
|
Josephine | TBD | elp | Green,Pink-Light,Yellow,White | Midseason | |
|
Joya | Glenn Dale | evg | |||
|
Jubilant | Glenn Dale | evg | Red,Orange | ||
|
Jubilee | Glenn Dale | evg | |||
|
‘Judith Quarrington’ | Stewart | evg | Zone 7, at least | Green,Yellow,White | Midseason |
|
‘Judy Karpen’ | Stewart | evg | Zone 7, at least | Early Midseason | |
|
‘Judy Spillane’ | Wister | elp | -15° F | Pink-Light,Purple,White | Late |
|
‘Jugoya’ | Satsuki | evg | Zone 7, at least | ||
|
‘Juko’ | Satsuki | evg | |||
| Juko (light pink form) | Satsuki | evg | ||||
|
‘Jukokan’ | Satsuki | evg | Zone 7 | ||
|
‘June Jasmine’ | Holly Springs | evg | -5 F | Very Late | |
|
June Jubilee | Aromi | dec | Late | ||
|
Juneglow | Glenn Dale | evg | |||
| Juniperus horizontalis Blue Pygmy | Conifer | cmp | Zone 3 | |||
|
Jurassic Fantasy | Raustein | elp | Zone 6/-10°F | Pink-Light | Early Midseason |
| ‘Just So’ | Unknown | elp | Zone 7, at least | |||
|
Jutta
(Alpenrose) | Deckert | evg | Pink,Salmon | Midseason | |
| Cultivar | Group | Type | Hardy | Color | Bloom Time |