Light Needs
Mature Height
Mature Spread
Growing Zones
This semi-dwarf evergreen will keep your landscape looking pristine all year around. It is a female variety and has the ability to produce red berries when a male Castle Wall Holly is planted close by. It will maintain its shape without having to prune. Thanks to its semi-dwarf habit, it is perfect for home landscapes!
The foliage is what is noticeable about the Castle Keep Blue Holly. It is a deep glossy green. It is soft to the touch and appears to be leathery. If it has a bloom season, white flowers appear in the spring which in turn produce red berries. The garden height is thirty-six to sixty inches. The spread reaches thirty-six to forty-eight inches. Use the Castle Keep Blue Holly for border planting, or in mass planting. Its texture makes for a great focal point. Add this plant to any landscape for year around color.
Castle Keep Blue Holly Care
Plant in full to part sun. Ensure it receives at minimum 4 hours of sun each day. Soil should be well drained. It prefers acidic soil and has average water needs. Thanks to its rounded and dense habit pruning is not required or recommended. This is a female variety. It requires a male variety within 50 feet in order to produce fruit.
Castle Keep Blue Holly Spacing
Be sure to space your Castle Keep Blue Holly 36” to 48” inches, center on center. Correct spacing is important when using for mass plating or any planting in proximity.
Castle Keep Blue Holly Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 5 to 7 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop)
- Sun Exposure
- Part Sun to Full Sun (5+ Hours Direct Sun)
- Mature Height
- 3-5 Feet
- Mature Spread
- 3-4 Feet
- Growth Habit
- , Upright
- Water Needs
- Average
Flowers & Foliage
- Flower Colors
- , White
- Flower Description
- White
- Bloom Time
- Late Spring
- Blooms On
-
Old Wood
?
"Blooms on" tells you which stems produce flowers, which decides when it's safe to prune.
- New Wood: Flowers form on stems that grow this season. Prune in late winter or early spring without losing blooms.
- Old Wood: Flower buds form on last year's stems. Prune right after flowering. Pruning in fall or early spring removes next year's blooms.
- Both New and Old Wood: Blooms on last year's stems and again on new growth, so it flowers even after a hard winter or a mistimed pruning. Prune lightly after the first flush of blooms.
- When to Prune
- Right after flowering
- Foliage Color
- , Blue, Green
- Foliage Description
- Green
- Foliage Type
- , Evergreen
- Seasonal Interest
- , Fall Interest, Winter Interest, 4 Season Interest
Garden Benefits
Plant Overview
- Common Name
- Castle Keep Blue Holly
- Also Known As
- Meserve Hybrid Holly
- Botanical Name
- Castle Keep Ilex x meserveae 'SMNIFA' USPPAF
- Brand
- Proven Winners
- Plant Type
- Evergreen
Simple Plant Spacing Calculator
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons
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Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!