Quercus x warei 'Long' REGAL PRINCE® hybrid oak
size/type
medium-sized tree,medium-sized tree
usual height
7-15m
usual width
3-6m
leaves
deciduous broadleaf
colour of leaves
flowers
insignificant or non-blooming
location
full sun
soil type
acidic (peaty) to neutral
soil moisture requirements
evenly moist (dislikes drought)
USDA zone (lowest)
4 (down to -34°C)
winter protection
for zone 5+6
for zone 7
categorized
Description of the plant:
Columnar hybrid oak REGAL PRINCE® is a result of crossing seeds of English oak (quercus robur Fastigiata) and swamp white oak (quercus bicolor). The aim was to achieve a hardier form of columnar oak since the English oak proved too sensitive in harsh arctic winds in Illinois. This experiment was carried out by Earl Cully from Jacksonville, USA, in 1974, and the successful result was patented 25 years later in 1998 under PP12,673.REGAL PRINCE® is a deciduous oak of dense, upright, and narrowly oval to columnar habit. It has beautiful, medium green, obovate leaves with unevenly lobed margins. They turn amber-yellow in autumn. They are resistant to powdery mildew and borers, which are problems of English oaks in Europe, too.
It is a vigorous grower, but keeps its upright habit without bending its branches after strong winds or under heavy snow-fall. Even though it becomes a tall tree in maturity, reaching some 15m tall and 6m wide, many small and mid-sized garden owners go for this one, mostly for its lush foliage, knowing they can regulate its size by pruning in early spring. It will grow in almost any soil but prefers humus-rich, slightly acid, evenly moist conditions in full sun. Hardy to about -34°C (USDA zone 4).
Last update: 14-02-2013
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GLOSSARY
- STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
- DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
- EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
- STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
- HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
- SHRUB - a woody plant with branches growing bushy from the ground level.
- HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
- FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
- GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
