SelecTree: Tree Detail
BIG BULL ENGLISH HOLLY
Ilex aquifolium 'Big Bull'
Ornamental male tree. Has large, mostly smooth-edged leaves.
Trees may be referred to as male or female.
Erect or Spreading with a Low Canopy.
Conical, Oval or Rounded Shape.
Has Evergreen foliage.
Height: 40 feet.
Width: 25 feet.
Growth Rate: 12 to 24 Inches per Year.
Longevity 50 to 150 years.
Leaves Oval, Dark Green, No Change, Evergreen.
. Has either male or female flowers (dioecious). Trees may be sold as male or female.
Bark Dark Gray or Light Gray, Smooth.
Shading Capacity Rated as Dense to Very Dense in Leaf.
Tree Site Conditions & Constraints
Sunset Zones 4 - 9 and 14 - 17.
USDA Hardiness Zones 7 - 9.
Exposure Full Sun to Partial Shade.
Clay, Loam or Sand Texture.
Highly Acidic to Slightly Alkaline Soil pH.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Resistant to Verticillium. Susceptible to Leaf Miner and Scales, Armillaria.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium.
Root Damage Potential Rated as Low.
Allergy Health Hazard.
Not Deer Palatable.
Special Uses & Values
Cite this tree:
SelecTree. "Ilex aquifolium 'Big Bull' Tree Record." 1995-2018. Jul 20, 2018.
< https://selectree.calpoly.edu/tree-detail/ilex-aquifolium-big-bull >