Mahonia eurybracteata 'NARIHIRA'

Mahonia eurybracteata
Mahonia eurybracteata 'NARIHIRA'
threadleaf mahonia, Oregon grape holly
SIZE/TYPE medium-sized shrub
USUAL HEIGHT 0.5-1.5m
USUAL WIDTH 0.5-1.5m
LEAVES evergreen broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS yellow
BLOOMING TIME October - December
LOCATION semi-shade / partial sun
SOIL TYPE any (acidic to alkaline)
SOIL MOISTURE REQUIREMENTS evenly moist but well-drained
USDA zone (lowest) 7   (down to -18°C)
WINTER PROTECTION  
FOR ZONE 5+6 Code of winter protection zone 5+6
FOR ZONE 7 Code of winter protection zone 7
BELONGS TO CATEGORIES Evergreen broadleaf
Exotics
náhled fotonáhled fotonáhled foto
Threadleaf mahonia (Oregon grape) is a Chinese taxon formerly known as mahonia confusa. Perhaps only with it rising popularity thanks to newly invented varieties its name was changed to m.eurybracteata. The first successful varieties were Narihira, Soft Caress, and Sweet Winter.

Narihira is a Threadleaf mahonia variety which is possibly the first widespread variety of this unique mahonia species in the USA. It is a stunning architectural plant whose habit resembles that of a small palm tree which makes it popular in exotic-style landscapes. Its evergreen leaflets are 1-2 cm wide, soft to touch, dark green, partially glossy, gently serrated at margins, and form a compound pinnate frond. In autumn unroll 10-20 cm tall, upright racemes composed of small, bright yellow, slightly fragrant flowers. If pollinated, they are followed by purple blue, edible berries that taste like barberry berries.

It grows into a dense shrub about 1.5m tall and wide, offering a fluffy habit. It loves a bit of sun and midday shade, or partial shade all day long. Plants grown in full sun set more flowers but are prone to sunscorch in colder climates especially in late winter. Still, they regenerate readily after spring pruning. This mahonia will be a jewel among other large-leaved evergreens and a fine-textured understory of mid-sized trees providing filtered sunlight.

Threadleaf mahonia requires fertile soil of any pH (acidic, neutral, and alkaline). It likes constantly moist but well-drained soil. We experienced the best results with acidic soil where its foliage produced the richest colour. It does not like drought so keep it mulched all year long. Recommended hardiness is commonly -17 °C (USDA zone 7) but we continue with trials as we believe it will take a few degrees lower.

Last update 12-11-2021
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Mahonia eurybracteata 'NARIHIRA' height 30-40 cm, width 30-40 cm
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Mahonia eurybracteata
Mahonia eurybracteata
GLOSSARY
  • STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
  • DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
  • EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
  • STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
  • HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
  • SHRUB - a woody plant with branches growing bushy from the ground level.
  • HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
  • FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
  • GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
LARGE PLANTS over 150 cmspecimens, screening and hedging shrubs

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