Holly BushesA Grower's Guide to Holly
English Holly

Alaska

Cold-hardier English holly that berries young.

An evergreen member of the english holly group, Alaska earns its place through bright red berries and a tough, long-lived constitution. Below is a full profile of Alaska — its characteristics, how to grow it, whether it needs a pollinator for berries, and answers to the questions gardeners ask most.

About Alaska

Grouped among the english holly, Alaska shows the hallmarks of the class — glossy, wavy, sharply spined leaves, often boldly variegated in silver or gold. Ilex aquifolium is the glossy holly of European tradition, prized above all for its lustrous, often variegated foliage and classic Christmas character.

Alaska is evergreen and hardy across USDA zones 6-9, so it suits a wide range of gardens with the right acidic, well-drained soil and seasonal care.

Characteristics and form

Alaska makes an upright, densely branched large shrub or small tree, typically around 10-15 ft tall and 8 to 15 feet wide. Its foliage is glossy, wavy, sharply spined leaves, often boldly variegated in silver or gold. Knowing a holly's mature size and habit is the key to placing it well: give Alaska room to reach its full spread without crowding, which also keeps air moving through the plant and disease at bay.

Berries and pollination

Alaska is a female holly, so it carries the red berries — but only when a compatible male holly flowers within about fifty feet. Bees move the pollen; without a male in range, a female holly still flowers but sets little or no fruit.

Remember: holly is dioecious — male and female flowers grow on separate plants, and only pollinated females bear fruit. See our full guide to holly berries and pollination for how to guarantee a berry crop.

How to grow Alaska

Plant Alaska where it will get full sun to part shade in acidic, moist, well-drained soil. Full sun gives the densest growth and the heaviest berry set. Set the plant at the depth it grew in the pot, water it deeply while it establishes, and mulch the root zone to hold moisture and keep the soil cool and acidic.

  • Light: Full sun to part shade; full sun gives the densest growth and the most berries.
  • Soil: Acidic, moist, and well-drained, ideally pH 5.0–6.5. Improve heavy or alkaline ground with organic matter and keep it mulched.
  • Water: Deep, regular watering while establishing; steady summer moisture helps hold the berry crop.
  • Feeding: An acid-forming holly fertilizer in early spring keeps the foliage deep green.
  • Pruning: Shape in late winter, before growth begins, to preserve the flowers that become berries.

Where to use Alaska in the garden

Alaska suits formal specimens, clipped hedges, variegated foliage accents, and cut greenery. Set variegated forms where their silver or gold margins light up a shady corner, paired with dark evergreens for contrast.

Common problems and care

English holly wants a mild, moist climate and full sun to keep variegation bright and growth dense; it resents extreme heat and bitter cold. Watch for the usual holly troubles — leaf miner, scale, and spider mites, and root rot in soggy ground — and head them off with the right site, good drainage, and good air flow. Yellowing leaves usually signal alkaline soil or poor drainage rather than disease.

Alaska — frequently asked questions

How big does Alaska get?

Alaska grows into an upright, densely branched large shrub or small tree, typically reaching 10-15 ft tall and 8 to 15 feet wide. Its final size depends on your climate, the site, and how you prune it.

Does Alaska have berries, and does it need a male holly?

Alaska is female and bears red berries, but it needs a compatible male holly flowering within about fifty feet to pollinate it. One male can pollinate several nearby females.

Is Alaska evergreen or deciduous?

Alaska is evergreen, holding its glossy, wavy, sharply spined leaves, often boldly variegated in silver or gold through the winter.

What hardiness zones does Alaska grow in?

Alaska is hardy in USDA zones 6-9. That range describes the winter cold it can survive; gardeners colder than zone 6 should give it a sheltered site or choose a hardier holly.

Is Alaska easy to grow?

English holly wants a mild, moist climate and full sun to keep variegation bright and growth dense; it resents extreme heat and bitter cold. Give Alaska an acidic, well-drained soil and the ordinary seasonal care any holly appreciates, and it is a straightforward, low-maintenance shrub.

When should I prune Alaska?

Prune Alaska in late winter, while it is dormant and before spring growth begins — that shapes the plant without removing the flower buds that become the next season's berries.

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