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Japanese Forest Grass

Plant of the Month January 2021
​Amanda's Garden Consulting

A Graceful addition to shady Gardens

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A golden mound of the 'Aureola' golden Japanese forest grass.
Japanese forest grass,hakone grass,Hakonechloa macra,ornamental grass,variegated perennial,shade plant,January plant of the month The Garden Website.com,the garden website.com,Amanda Jarrett,Amanda’s Garden Consulting,garden website,horticulture,landscaping,garden
This hakone grass works well with the orange fritillaria and the tulips. In the background are the purple leaves of the ligularia 'Britt-Marie Crawford'.
Japanese forest grass,hakone grass,Hakonechloa macra,ornamental grass,variegated perennial,shade plant,January plant of the month The Garden Website.com,the garden website.com,Amanda Jarrett,Amanda’s Garden Consulting,garden website,horticulture,landscaping,garden
A Japanese forest grass cascades over a raised bed from a shady nook.
Japanese forest grass,hakone grass,Hakonechloa macra,ornamental grass,variegated perennial,shade plant,January plant of the month The Garden Website.com,the garden website.com,Amanda Jarrett,Amanda’s Garden Consulting,garden website,horticulture,landscaping,garden
A hosta, and a grouping of golden hakone grass cover the ground.
Japanese forest grass,hakone grass,Hakonechloa macra,ornamental grass,variegated perennial,shade plant,January plant of the month The Garden Website.com,the garden website.com,Amanda Jarrett,Amanda’s Garden Consulting,garden website,horticulture,landscaping,garden
Japanese forest grass are suitable for container growing.
Japanese forest grass,hakone grass,Hakonechloa macra,ornamental grass,variegated perennial,shade plant,January plant of the month The Garden Website.com,the garden website.com,Amanda Jarrett,Amanda’s Garden Consulting,garden website,horticulture,landscaping,garden
A partially shaded bed combined with ferns accent a piece of driftwood.
Japanese forest grass,hakone grass,Hakonechloa macra,ornamental grass,variegated perennial,shade plant,January plant of the month The Garden Website.com,the garden website.com,Amanda Jarrett,Amanda’s Garden Consulting,garden website,horticulture,landscaping,garden
A variegated Japanese forest grass showing some fall colour.
​Common Name:  Japanese forest grass, hakone grass
Botanical Name:  Hakonechloa macra
Form:    a soft cascading mound
Family:  Poaceae
Genus:  Hakonechloa
Species: macra
Cultivar: Aureola
Plant Type: herbaceous perennial semi-evergreen or deciduous depending on climate
Mature Size:   generally 1.00 to 1.50 feet height and width
Growth: slow
Origin:  Japan
Hardiness Zone: 5 to 9
Foliage: arching, papery, thin, strap-like leaves, 3 to 6” long and 1/4 to 1/2 inch wide
Flowers: non-showy, tiny, airy clusters of yellowish-green, July, August
Fruit: grains
Exposure:  partial shade is best, tolerates more shade in hot climates
Soil: prefers humus rich, moist and well-drained.
Uses:  line paths, foundation plant, massing, mixed border, container plant, shade plant, accent plant, ground cover
Propagation:  division of rhizomes
Pruning:  cut off old foliage in early spring if it is unsightly
​Tolerant: air pollution, black walnuts, deer
Problems:  dislikes dry infertile soil and heavy clay soil

Comments: 
Japanese forest grass consist of numerous well-behaved cultivars that may or may not have yellow or cream streaked foliage. Reminiscent of bamboo, its leaves are thin, papery, strap-like and tapered to a point. The many layers of foliage forms a fine-textured and brightly coloured mound. Numerous varieties become tinged with pink, red, orange or purple in fall with the onset of cooler weather. It’s quite a dramatic plant, but in a quiet and calming way. It is a perfect addition to moist shade gardens to add some stylish panache.
 
Although it is tolerant of shady locations, too much shade causes the foliage to lose their colourful stripes and revert to a lime green. On the other hand too much sun causes the leaves to turn pale and become scorched. It’s best to provide more shade for these temperate plants when grown in sunny and hot climates. Japanese forest grass are ideal perennials for Southwest British Columbia as they prefer cool summers and mild, rainy winters.
 
Plants grow as clumps from underground rhizomes, but they are not invasive as they are slow growers. Although they are not known for their hardiness they do withstand – 25 degrees Celsius. In cold climates, it’s important to mulch them for the winter. Cover with a few inches of fall leaves, straw or even soil. Don’t remove their leaves in fall as this makes them prone to winterkill. Remove the mulch in early spring when the danger of severe frosts are over and the plant sends out new growth. Cut off the old foliage when the new growth emerges. Place the remnants around the base of the plant as a mulch.
 
Mulch. Due to Japanese forest grass’ penchant for moist, rich soil, they benefit from an organic mulch. When removing their spent leaves in spring, place their clippings around the base of the plants. Add more organic mulch such as fall leaves and aged wood chips to a depth of 3 inches. For more on mulch click here.  Japanese forest grass does not do well in heavy clay soils, nor arid or sandy soils, but no matter what type of soil they are grown in, the do benefit from being mulched.
 
Cultivars
‘All Gold’: 10-24” x 12-24”, compact, with gold coloured foliage.
‘Aureola’: 12-24’ tall and wide, green leaves with yellow stripes.
‘Beni-Kaze’: 12-18” x 24-36”, green leaves turn to red in fall.
‘Fubuki’: 8-12” x 16–18”, green and white striped foliage turns pink to orange in autumn. 
‘Naomi’:  8-16” x 18-24”, green and yellow striped summer foliage that turns red and purple in autumn,
‘Nicolas’: 8-16” x 18-24”, summer green leaves, red and orange fall colour.
‘Stripe It Rich’: 6 to 10” tall x 20”, green with gold stripes.
Japanese forest grass,hakone grass,Hakonechloa macra,ornamental grass,variegated perennial,shade plant,January plant of the month The Garden Website.com,the garden website.com,Amanda Jarrett,Amanda’s Garden Consulting,garden website,horticulture,landscaping,garden
Combine with the feathery astilbe plumes that also like partial shade and moist soils.
Japanese forest grass,hakone grass,Hakonechloa macra,ornamental grass,variegated perennial,shade plant,January plant of the month The Garden Website.com,the garden website.com,Amanda Jarrett,Amanda’s Garden Consulting,garden website,horticulture,landscaping,garden
Foliage is thin and papery. Variegated cultivars bear yellow or cream stripes.

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  • Home
  • About, Services, Contact
  • Amanda's Garden Blog
  • Ask Amanda
  • Roses
    • Types of Roses
    • Easy Roses
    • Climbing Roses
    • Portland's Rose Test Garden
    • Rose Insects & Diseases
    • Pruning Roses
    • Rose Sawfly
    • Rose Bloom Balling
  • Pruning Basics 101
    • Pruning Tools
    • Winter Pruning
    • Pruning Grapes
    • Pruning Clematis
    • Prune Your Own Garden Registration
  • Lawn Basics
    • Lawn Reno, Seed & Sod
    • Lawn Maintenance Schedule
    • Spring Lawn Care
    • Moss in Lawns
    • Lawn Alternatives
    • Lawn Grub Control
  • Mulch & Mulching
    • Living Mulches - Groundcovers
  • Propagation
    • Growing Seeds Outdoors
    • Growing Seeds Indoors
    • Hardening Off Plants
    • Taking Cuttings
    • Seed & Plant Catalogues
  • How to Garden Topics
    • Fall Garden Chores
    • Planting Know-How
    • Soil Building
    • Soil pH
    • Watering Tips & Techniques
    • Drought Gardening
    • Sheet Mulching, Lasagna Gardening
    • Cover Crops
    • Composting
    • Compost Tea
    • Houseplant Winter Care
    • Hummingbirds in Winter
    • Winterize Your Garden
    • Ponds in Winter
  • Growing Food
    • Spring Veggie Gardening
    • Fall Veggie Garden Clean-up
    • Crop Rotation, Succession & Companion Planting
    • Harvesting
    • Growing Potatoes
    • Winter Veggie Gardening
    • Taming Tomatoes
    • Speeding up Tomato Harvest
    • Tomato Tips
    • Saving Tomato Seeds
    • Raspberries
    • Tomato Troubles
  • Plant Pests 1
    • Plant Pests Part 2 - Controlling Insects
    • Garden Inspections
    • Cloches
    • Helping Pollinators
    • Critters in the Garden
    • Black Sooty Mould
    • Brown Marmorated Stink Bug
    • Dogwood Anthracnose
    • Viburnum Leaf Beetle
    • Dormant Oil/Lime Sulfur
    • Japanese Beetles
    • Peony Blotch/Measles
    • Slugs & Snails
    • Horsetail, the Weed
    • June Beetle
    • Powdery Mildew
    • Soil Solarization
    • Rhododendron Leaf Spot
    • Plant Rusts
    • Black Knot
  • Container Growing
    • Choosing a Container
  • Feeding Plants 101
    • Fertilizers & Ratios
    • Nutritional Deficiencies & Toxicities
    • Organic Plant Food
  • Plant of the Month
    • Spring Flowering Bulbs
    • Colourful Fall Plants
    • Abelia
    • American Sweetgum
    • Ash (Fraxinus) Trees
    • Astilbes
    • Azaleas, Deciduous
    • Aubretia, Rock Cress
    • Aucuba, Japanese Spotted Laurel
    • Autumn Crocus
    • Bear's Breeches
    • Beautyberry, Callicarpa
    • Black-eyed Susans
    • Bleeding Heart, Lamprocapnos spectabilis
    • Calla Lilies
    • Catalpas
    • Chinese Windmill Palm
    • Columbine
    • Chrysanthemums
    • Crocuses
    • Dahlias
    • Dawn Redwood
    • Daylily
    • Delphiniums
    • Devil's Walking Stick, Aralia spinosa
    • Doghobble, Leucothoe
    • Dwarf Alberta Spruce
    • Dwarf Burning Bush
    • Elderberries, Sambucus
    • Evergreen Clematis
    • English Daisies
    • Fawn Lilies, Erythroniums
    • Fall Asters
    • Flowering Currants
    • Flowering Quince
    • Fritillaria
    • Garden Peonies
    • Garden Phlox
    • Ginkgo biloba
    • Grape-hyacinths
    • Handkerchief or Dove Tree
    • Hardy Fuchsia
    • Harry Lauder's Walking Stick
    • Heathers
    • Heavenly Bamboo
    • Hellebores, Lenten roses
    • Himalayan Sweet Box
    • Hydrangeas, Mophead & Lacecap
    • Jack-in-the-pulpit, Cobra Lily
    • Japanese Anemones
    • Japanese Forest Grass
    • Japanese Maples
    • Japanese Skimmia
    • Japanese spirea
    • Japanese Spurge
    • Kale, ornamental
    • Katsura Trees
    • Kousa Dogwood
    • Laurustinus viburnum
    • Lavenders
    • Lily-of-the-Valley Shrub, Pieris japonica
    • Mediterranean Spurge
    • Mexican Mock Orange
    • Montana Clematis
    • Mountain Ash
    • Oregon Grape Holly
    • Oriental Poppies
    • Oriental Lilies
    • Paperbark Maple
    • Pearl Bush
    • Persian Ironwood
    • Peruvian Lily, Alstroemeria
    • Phalaenopsis, Moth Orchids
    • Photinia, Fraser
    • Poinsettias
    • Primroses
    • Persian Silk Tree
    • Portuguese Laurel
    • Rose of Sharon
    • Saucer Magnolia
    • Shrubby Cinquefoil
    • Sneezeweed, Helenium
    • Snowberry
    • Snowdrops
    • Solomon's Seal
    • Star Magnolia
    • Strawberry Tree, Pacific Madrone
    • Stewartia
    • Torch Lily, Kniphofia uvaria
    • Tree Peonies
    • Tuberous Begonias
    • Variegated Wintercreeper
    • Viburnum, Pink Dawn Bodnant
    • Virginia Creeper
    • Weigela
    • Winterhazel, Corylopsis
    • Winter Camellia, C. sasanqua
    • Winter Daphne
    • Wintergreen, Gaultheria procumbens
    • Witch Hazel
    • Wood Anemones
    • Yews
  • Garden Tours & Such
    • NW Horticultural Society July Garden Tour 2024
    • Burnaby in Blooms
    • Burnaby's Century Gardens
    • South Delta Garden Club Tour 2023
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