I have had this plant growing on a northern exposure in front of a covered porch here in southern zone 5A. It went through a very cold winter with no noticible damage and is getting ready to grow beautifully.
Castle Spire® Blue Holly Ilex x meserveae
- Hardy Zones
- 5 - 7
- Part Sun to Sun
- Mature Size
- 72 - 120 Inches
Compact pyramidal evergreen holly. Red winter berries. Use Castle Wall as pollinator.
Great as a foundation plant, specimen or hedge, can be used as a replacement for pyramidal yews. Good in groupings and mass plantings, perennial and shrub borders, can be used as a screen or hedge. An outstanding plant for the winter landscape.
According to the Humane Society of America Ilex berries can be toxic to pets. This is means that the plants are generally identified as having the capability for producing a toxic reaction.
Prune to shape immediately after flowering. Likes high moisture, native to swampy and boggy areas. Adaptable to wet soils, does well in light and heavy soils. Fertilize in early spring by applying a slow release fertilizer specialized for trees and shrubs. Follow the label for recommended rates of application. Protect from winter wind and sun in cold (Zone 5) climates. Must be planted near a pollinator like Castle Wall in order to produce berries. Protect from harsh winter winds and sun.
Very attractive color and form.
The Castle Ilex are compact, pyramidal varieties of blue holly compact. Dark glossy leaves, superior vigor and branching make them an improvement over other older varieties. Their narrow form makes them great for hedges, foundation plantings, or even as a dramatic specimen. The lustrous green foliage provides season long interest. Castle Spire will produce bright red berries for fall and winter enjoyment; use Castle Wall as the pollinator. Fruit is not edible.
- Seth HenryIllinoisUnited States4 years ago