Ilex x meserveae 'Blue Princess' (Blue Princess® Holly)


Michael's Opinion

This makes a beautiful winter accent with the many clusters of berries and the vibrant greenish blue leaves. It should be planted in a protected area to help reduce the incidence of winter burn. Add mulch to keep the roots cool and moist. Perfect for Christmas wreaths.

Botanical Information

FamilyAquifoliaceae
GenusIlex
Speciesx meserveae
Cultivar'Blue Princess'
CategoryWoody
TypeShrub (evergreen)
OriginMrs. F. Leighton Meserve of St. James, New York, United States of America produced a series of initial hybrids beginning ini 1964 which were introduced through the Conard-Pyle Nursery in New York state. Blue Prince was introduced in 1973 and results in a cross selected from I. rugosa x I. aquifolium.Breeders sought to increase cold hardiness with an emphasis on species from northern Japan.
Pronunciation

Details

USDA Hardiness Zone5
USDA Hardiness Ref.
Canadian Hardiness Zone6a - 6b
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-23-(-26)
Temperature (°F)-10-(-20)
Height3-5 m
Spread3-5 m
GrowthSlow
Flowering PeriodJune

Description and Growing Information

General DescriptionThis hybrid holly is a broad, upright, evergreen shrub. Features dark purplish stems and glossy, blue-green leaves which have spiny-toothed margins. Tiny, whitish flowers appear in spring and are relatively inconspicuous.
ID CharacteristicLeathery deep green with a blueish tint, sharply pointed foliage with clumps of very attractive red berries (most berries) catch the eye of humans and birds alike in most garden settings.
ShapeUpright, evenly spreading vase form of a large shrub
LandscapeUse 1 male to 5 females to ensure good berry set. Used in the landscape for hedge, barrier or background plant. Has showy fruit and should used for winter interest, twigs may be cut and added to a Christmas wreath.
PropagationRoot stem cuttings in the summer, taking short cuttings of mature new growth, stripping or pruning off the lower leaves, and sticking into moist potting soil or well-drained garden soil kept in bright indirect light and high humidity. Keep cuttings moist for 4-6 weeks until well rooted, then transplant into individual containers. Rooting hormones increase the likelihood of rooting but are not necessary.
CultivationEasily grown in average, medium moisture soil in full sun to partial shade. Adaptable to both light and heavy soils, but prefers moist, acidic, organic soils with good drainage. Prone to winter burn so some protection maybe required. Mulch is beneficial.
PestsOccasional problems with holly leaf miners, mealybugs, scale and mites. If leaves yellow while veins remain green (chlorosis), soil acidity probably needs adjustment. Protect in winter to prevent leaves from desiccation.
HabitatHorticultural origin.
Bark/Stem DescriptionSmooth dark green to gray in appearance with purplish blue stems.
Flower/Leaf Bud DescriptionCluster of 5-8 reddish purple buds .5-1.5 cm in size clustered at the base of various branches. Start as a reddish purple bud, turns white before it bursts into flower.
Leaf DescriptionSimple, alternately forming 4 - 8 spines along the leaf margin. The leaves have a very rigid but delicate form with a very dark bluish green broad leaf with a bright green underside.
Flower DescriptionSmall imperfect creamy white flowers that appear in inconspicuous clusters on both sexes of holly. Female flowers are distinguished by having a little green bump, an immature ovary, in the center.
Fruit DescriptionBerries are only present on the female plant of this species, this cultivar has the most berries of the Hollies. The berries are 5 mm - 1.5 cm and round with a black dot opposite the stem.
Colour DescriptionSmall pale creamy white flowers are inconspicuous, while the foliage is a delicious deep bluish-green shade. Berries are bright red clusters while the bark blends in with a green with a touch a grey colour.
Texture DescriptionSmooth glossy top. Prickly 4-8 spines on each with a slight bite to the touch.

Photographs