Blue Holly, Meserve Holly, Meserve Hybrid Holly 'Castle Wall'

Ilex x meserveae

Family: Aquifoliaceae (a-kwee-foh-lee-AY-see-ee) (Info)
Genus: Ilex (EYE-leks) (Info)
Species: x meserveae (MESS-erv-ay) (Info)
Cultivar: Castle Wall
Additional cultivar information:(PP14308; Castle series, aka Heckenstar)
Hybridized by Hachmann
Registered or introduced: 2002



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


12-15 ft. (3.6-4.7 m)


4-6 ft. (1.2-1.8 m)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

White/Near White


Bloom Time:

Mid Spring


Grown for foliage



Provides winter interest

Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:


Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us


This plant has been said to grow in the following regions:

Yonkers, New York

Warrenton, Virginia

Gardeners' Notes:


On Jun 25, 2012, Gracye from Warrenton, VA wrote:

Conditions: Hot Virginia sun, facing South-West (mostly South), Foundation, CInderblock painted bright white, to go in corners where brick porch joins the cinderblock, and edge of house. Could not exceed 20' tall, or about 4' wide. Amended soil but clay right underneath - not very much soil (I added more the next year).
Bought 2 Castle Walls, 2 Castle Spires. Put the ladies either side of porch, the men at the ends. Globe spruce in between.
The men did not fare well. I protected them with burlap thru winter, but they just did not thrive. One of the ladies was the same. After much investigation, and major desire for Hollies, I bought one more lady this Spring.
Husband removed the two men and the other lady. Now, they are actually thriving, and I have a new lady in plac... read more


On Apr 7, 2011, dennyboy34 from Yonkers, NY wrote:

Planted a 50' hedge row of Castle Spire and a smaller 15' hedge row of Castle Wall (for pollination purposes) in 2010. Plants to start were quart size (about 8" to 12" in height). All survived a tough NY winter with little damage; they were buried under several feet of snow for weeks and only had some broken branches here and there after thawing. Note, the leaf form of these two cultivars is slightly, but noticably, different. They should not be used in the same hedge row. The habit of Castle Wall (male) is a little different than Castle Spire (female). If using them in the same planting, the differences will stand out. Try planting Castle Wall nearby but in a different planting than the Castle Spire. Fertilized with holly food in the fall and spring. These cultivars, like most hol... read more