Characteristics
| Hardiness zone | 6a |
|---|---|
| Foliage type | evergreen |
| Plant form | round |
| Mature height | 10 feet |
| Spread | 15 feet |
| Light requirements | full sun |
| Moisture requirements | dry to average |
| Plant origin | import |
Thunderhead Japanese Black Pine
Botanical name: Pinus thunbergii ‘Thunderhead’
A large, wide-spreading evergreen shrub with very deep green needles and attractive white new growth in spring; a good character plant for larger gardens, will eventually grow quite large so leave adequate room.
Ornamental Features
Thunderhead Japanese Black Pine has dark green foliage. The needles remain dark green throughout the winter. Neither the flowers nor the fruit are ornamentally significant.
Landscape Attributes
Thunderhead Japanese Black Pine is a dense multi-stemmed evergreen shrub with a more or less rounded form. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.
This shrub will require occasional maintenance and upkeep. When pruning is necessary, it is recommended to only trim back the new growth of the current season, other than to remove any dieback. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;
Disease
Thunderhead Japanese Black Pine is recommended for the following landscape applications;
Accent, Hedges/Screening, General Garden Use
Planting and Growing
Thunderhead Japanese Black Pine will grow to be about 10 feet tall at maturity, with a spread of 15 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front, and is suitable for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for 80 years or more.
This shrub should only be grown in full sunlight. It prefers dry to average moisture levels with very well-drained soil, and will often die in standing water. It is not particular as to soil type or pH, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selected variety of a species not originally from North America.
