| Oasis F1 |
|
South Europe: spring; North Europe: spring, early summer, late autumn |
North Europe | South Europe |
| Octave F1 |
|
summer |
North Europe |
| Olivia F1 |
|
winter GH in NL, acryl protected crops in spring |
|
| Opimes |
|
spring |
North Europe |
| Opus |
|
South Europe: winter and spring | North Europe: spring, summer and autumn |
South Europe | North Europe |
| Orcades |
|
South Europe: autumn, winter, spring; North Europe: summer |
South Europe | North Europe |
| Orpheon F1 |
|
spring, early summer |
North Europe |