Emerald Colonnade® Holly
Emerald Colonnade® Holly
Ilex x 'RutHol1' Plant Patent #23,905Item #9265 USDA Hardiness Zone: 7 - 9
This handsome and versatile male evergreen holly with a natural pyramidal form creates a superb hedge, screen, or windbreak. Dense, glossy, bright green foliage is tolerant of shearing, making it an excellent topiary specimen or formal accent to entryways or gardens. Small cream-colored flowers do not produce berries.
- OverviewLight Needs:Full sunWatering Needs:Water regularly - weekly, or more often in extreme heat or containers.Average Landscape Size:Moderate growing; reaches 10 to 12 ft. tall, 6 to 8 ft. wide.
- DetailBotanical Pronunciation:I-leksPlant type:ShrubDeciduous/evergreen:EvergreenGrowth habit:Columnar, PyramidalGrowth rate:ModerateAverage landscape size:Moderate growing; reaches 10 to 12 ft. tall, 6 to 8 ft. wide.Foliage color:GreenBlooms:SpringFlower color:YellowPatent Act:Asexual reproduction of plants protected by the Plant Patent Act is prohibited during the life of the patent.Companion PlantsRhododendron (Rhododendron); Astilbe (Astilbe); Coral Bells (Heuchera); Japanese Forest Grass (Hakonechloa); Camellia (Camellia)
- CareCare InformationAdapts to a range of soil types; thrives in light, well-drained, acidic soils with consistent moisture. Water deeply, regularly during first growing season to establish an extensive root system. Once established, reduce frequency; tolerates mild drought. Fertilize in early spring. For a tidy appearance, prune to shape in winter.Light Needs:Full sunWatering Needs:Water regularly - weekly, or more often in extreme heat or containers.
- History & LoreHistory:This improved hybrid holly, 'RutHol 1', was developed by Dr. John M. Ruter, renowned plant breeder and researcher at the University of Georgia. Open pollinated seed was collected from the seed (female) parent, Ilex crenata 'Sky Pencil' (unpatented). Two distinctly different male hollies were growing in the vicinity of the female plant: I. crenata 'Glass' (unpatented) and an unnamed plant of I. maximowicziana (unpatented), both of which have an overlapping period of anthesis with 'Sky Pencil'. The collected seed was cultivated and 'RutHol1' was subsequently selected from this cultivated area. Ilex 'RutHol1' appears to be intermediate to I. crenata and I. maximowicziana, confirming that an unnamed plant of I. maximowicziana is the pollen (male) parent. The original 'RutHol1' plant is growing in Tifton, Georgia.
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