Strongbox® Inkberry holly Ilex glabra

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  • Strongbox® - Inkberry holly - Ilex glabra
  • strongbox_inkberry_holly_3.jpg
  • plant
Exposure
  • Part Sun to Sun
  • Sun
Flower Season
  • Spring
  • Summer
  • Fall
  • Winter
Mature Size
Height: 2' - 3'
Spread: 2' - 3'
 

This plant is hardy in zones 5 - 9

Zones are based on the average annual extreme minimum temperature an area is expected to receive during the winter. They are used to determine whether a plant is likely to be perennial in your area. If the number in the green box below is within the zone range listed for the plant, it will be hardy for you and thrive in your climate.

  • 5
  • 6
  • 7
  • 8
  • 9

What is my hardiness zone?

NORTH BAY, ONTARIO 

ZONE 4

  • FEATURES

    Native alternative to boxwood.

    Love boxwood but struggle with disease or winter damage? Plant Strongbox® inkberry holly instead. This native evergreen naturally grows as a broadly rounded mound, and keeps its leaves all the way to the ground for the lush, dense look you love. It can be pruned or shaped as you desire, or left to attain its neat natural shape. It's also much faster growing than boxwood, and offers good deer resistance, too. Available in better garden centers in spring 2019.

    Top reasons to grow Strongbox® inkberry holly:

    • Native to North America.
    • Naturally mounded shape and evergreen.
    • Resistant to disease, pests, and winter burn.
    Foliage Interest
    Winter Interest
    Native to North America

    CHARACTERISTICS

    Plant Type: 
    Shrub
    Shrub Type: 
    Evergreen
    Height Category: 
    Short
    Garden Height: 
    24 - 36 Inches61cm - 91cm
    Spacing: 
    24 - 36 Inches 61cm - 91cm
    Spread: 
    24 - 36 Inches 61cm - 91cm
    Flower Colors: 
    White
    Foliage Colors: 
    Green
    Foliage Shade: 
    Green
    Habit: 
    Mounded
    Container Role: 
    Filler

    PLANT NEEDS

    Light Requirement: 
    Part Sun to Sun
    Sun

    The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

    Maintenance Category: 
    Easy
    Blooms On: 
    Old Wood
    Bloom Time: 
    Spring
    Hardiness Zones: 
    5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
    Water Category: 
    Average
    Uses: 
    Border Plant
    Container
    Edging Plant
    Landscape
    Mass Planting
    Specimen or Focal Point
    Uses Notes: 

    Plant Strongbox inkberry holly anywhere you'd use boxwood - as a hedge, edging, or specimen. Strongbox inkberry holly is a bit broader and less rounded than our other inkberry holly, Gem Box®.

    Maintenance Notes: 

    Little care is needed to enjoy Strongbox inkberry holly in your landscape. It has shallow roots, so a 2-3" layer of mulch is a good idea. If you wish to trim or prune it, do so in mid-late spring, after the new growth has emerged. 

    Strongbox is a female variety and will develop black berries if a compatible male pollinator is planted in the vicinity. 

    Fun Facts: 

    The berries of inkberry holly were used by Civil War soldiers to make ink for their personal correspondance. To get berries on Strongbox inkberry holly, plant a male Squeeze Box holly within 50'/15m.

    Strongbox® Ilex glabra 'ILEXFARROWTRACEY' USPP 30,147, Can 6,516
    PUCTURES AND INFORMATION COPIED FROM PROVEN WINNERS 
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