When she grew the resulting seeds she found that the plants were attractive like the common holly, but hardy like the prostrate holly — she had found the perfect holly for colder climates. Holly Mississippi State University Extension: Attractive choice to pair with rhododendrons. Hybrid between Ilex aquifolium and Ilex pernyi. Chance hybrid between Ilex cornuta 'Burfordii' and Ilex latifolia. It has an excellent dense, compact habit to 12' tall with good quality, dark shiny green foliage.
Fungal infections are most likely to strike in the damp spring season, though they may appear at any time of year.
Instructions for Planting & Caring for a Holly Bush
The fruit color is a darker red than many others and the drupes are abundantly produced. Department of Agriculture plant hardiness zones 5 through 8. Sky Pencil Narrow, columnar plant to 68 feet tall and 2 feet wide. Though this plant has been touted as being the most cold hardy form, both 'Blue Princess and 'Blue Girl' appear to stand up to cold just as well.