Magnolia campbellii 'Sir Harold Hillier' (Sir Harold Hillier Magnolia)
Botanical Information
| Family | Magnoliaceae |
| Genus | Magnolia |
| Species | campbellii |
| Cultivar | 'Sir Harold Hillier' |
| Category | Woody |
| Type | Tree (deciduous) |
| Origin | A beautiful hybrid with huge pure white flowers. The original tree grows at Chyverton Gardens in Cornwall, United Kingdom. |
Details
| USDA Hardiness Zone | 9 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | Requires cold season protection under glass. |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H4 - H3 |
| RHS Hardiness Ref. | |
| Temperature (°C) | (-4) - (-1) |
| Temperature (°F) | 25 - 30 |
| Height | 8 m |
| Spread | 5 - 6 m |
| Growth | Medium |
| Flowering Period | March, April |
Description and Growing Information
| Shape | Grows to be broadly conical. |
| Cultivation | Grow in a sunny situation in humus-rich, moist, free-draining soil that is slightly acidic. |
| Pests | scale insects, honey fungus, coral spot. |
| Notable Specimens | Chyverton Gardens, Cornwall, United Kingdom. Trengwainton Garden, Madron, near Penzance, Cornwall, United Kingdom. |
| Bark/Stem Description | Twigs are yellow-green, later grey to ochre. |
| Leaf Description | Leaves to 23 x 11 cm, dark green above and pale green beneath. |
| Flower Description | Pure white cup and saucer shaped flowers that may measure up to 30 cm wide. |
| Fruit Description | Cones to 15 cm. |
Photographs
Magnolia campbellii 'Sir Harold Hillier', form, Trengwainton Garden, Madron, near Penzance, Cornwall, United Kingdom.
Magnolia campbellii 'Sir Harold Hillier', bark, Trengwainton Garden, Madron, near Penzance, Cornwall, United Kingdom.
Magnolia campbellii 'Sir Harold Hillier', flower bud, Trengwainton Garden, Madron, near Penzance, Cornwall, United Kingdom.