1.7m after 10 years
| Name | Flowers | Lowest Temp. | Height after 10 years | 20 Litre | 30 Litre | 45 Litre | 85 Litre | |
|---|---|---|---|---|---|---|---|---|
| Large Hybrid | ||||||||
| Albert Schweitzer | Pink | May/Jun | -20°C | 1.7m |  | |||
| Concorde | Mauve | May/Jun | <-20°C | 1.5m | | |||
| Cosmopolitan | Pink | May/Jun | -20°C | 1.5m | | | ||
| Delta | Pink | May/Jun | <-20°C | 1.75m | | | ||
| Fastuosum Flore Pleno | Mauve | May/Jun | <-20°C | 1.8m | | |||
| Gomer Waterer | White | May/Jun | <-20°C | 1.8m | | |||
| Grenadier | Red | Jun/Jul | -15°C | 1.8m | | |||
| Halfdan Lem | Red | Apr/May | -20°C | 1.5m | | | ||
| Jean Marie de Montague | Red | Apr/May | -20°C | 1.5m | | |||
| Kokardia | Mauve | May/Jun | -20°C | 1.5m | | |||
| Lem's Monarch | Pink | May/Jun | -20°C | 1.8m | | |||
| Loder's White | White | Apr/May | -15°C | 1.5m | | |||
| Lord Roberts | Red | May/Jun | -20°C | 1.5m | | |||
| Madame Masson | White | Apr/May | -20°C | 1.5m | | |||
| Markeeta's Prize | Red | Apr/May | -20°C | 1.5m | | | ||
| Mrs T Lowinsky | Mauve | Jun/Jul | <-20°C | 1.5m | | |||
| Nova Zembla | Red | May/Jun | <-20°C | 1.5m | | |||
| Peter Koster | Red | May/Jun | -20°C | 1.5m | | | ||
| Phyllis Korn | White | Apr/May | -20°C | 1.5m | | |||
| Pink Pearl | Pink | Apr/May | -20°C | 1.8m | | |||
| Robert Korn | White | May/Jun | <-20°C | 1.5m | | | ||
| Rocket | Pink | Apr/May | <-20°C | 1.5m | | |||
| Romany Chal | Red | Jun/Jul | -15°C | 1.8m | | | ||
| Sappho | White | Apr/May | -20°C | 1.8m | | |||
| Scintillation | Pink | Apr/May | -20°C | 1.5m | | |||
| Deciduous Azalea | ||||||||
| Berry Rose | Pink | May/Jun | -20°C | 1.8m | | |||
| Fireball | Red | May/Jun | -20°C | 1.8m | | |||
| Gibraltar | Orange | May/Jun | -15°C | 1.5m | | |||
| Irene Koster | Pink | Jun/Jul | -20°C | 1.8m | | |||
| Martha Isaacson | White | May/Jun | -15°C | 1.5m | | |||
| Persil | White | May/Jun | -20°C | 1.5m | | |||
| Rennie | Red | May/Jun | <-20°C | 1.5m | | |||
| Royal Command | Orange | May/Jun | -15°C | 1.8m | | |||
| Silver Slipper | White | May/Jun | <-20°C | 1.8m | | |||
| Vinecourt Dream | Pink | May/Jun | -20°C | 1.5m | | |||
| Vinecourt Duke | Pink | May/Jun | <-20°C | 1.5m | | |||
| Evergreen Azalea | ||||||||
| Mother's Day | Red | May/Jun | -20°C | 1.5m | | |||
| Pieris Japonica | ||||||||
| Forest Flame | White | Mar/Apr | -10°C | 1.8m | | |||
| Mountain Fire | White | Mar/Apr | -10°C | 1.6m | | |||
