Shade
is a fact of life in most gardens. Trees, shrubs,
fences, and buildings
all conspire to create a changing tapestry of light
and dark throughout
the day, testing the skills, and often the patience,
of the home gardener in the process. Urban gardens
are especially prone to shadiness, with closely spaced
houses and mature trees combining to rob many a yard
of available sunlight.
Success
or failure in a garden such as this depends upon
one's ability to recognize the degree of shade and
plant accordingly. All too often, plant selection
is made regardless of light, and sun-loving plants
languish in a spot
to which they cannot adapt. The results are
weak, spindly growth, little
or no bloom, and overall poor vigor. Fortunately,
there are a great number of plants, forest dwellers
in their native habitats, that thrive in a shady
position, and by associating these plants together,
one can develop a delightful and beautiful woodland
garden.
 |
There
are a great number of plants, forest dwellers
in their native habitats, that thrive in a shady
position, and by associating these plants together,
one can develop a delightful and beautiful woodland
garden. |
Gardens
often mimic nature, and nowhere is this more apparent
than in the woodland garden, where one can recreate
the subtle interplay of wood, stone, earth, and
leaf. Woodland gardens have an aesthetic all
their own. The riotous, vibrant colors of
a sunny border would be difficult to duplicate here.
Instead, the hues are often muted: all shades of
greens, whites, lavenders, blues, pinks, soft yellows,
and creams predominate. The characteristics
of leaf and plant habitat can play as important
a role as flower color, and many woodland plants
have striking foliage and form. The overall
effect, though, should be cooling and relaxing,
just as a shady spot can provide a welcome retreat
on a hot summer's day.
There
is a vast difference between the shade cast by a
thin, high canopy of deciduous trees, and that cast
by a porch enclosure off a north-facing wall, so
determining the character of the shade is of utmost
importance in plant selection. Also, with
so many terms in use regarding shade gardening,
it might be sensible to try to break these down
to help identify areas in terms of degree of shade
present.
 |
Gardens
often mimic nature, and nowhere is this more
apparent than in the woodland garden, where
one can recreate the subtle interplay of wood,
stone, earth, and leaf. The overall effect,
though, should be cooling and relaxing, just
as a shady spot can provide a welcome retreat
on a hot summer's day. |
Half
shade: This is the brightest position
that can still be considered shady.
This occurs in areas that receive morning sun but
afternoon shade, such as areas adjacent to east-facing
walls. Morning sun is not as hot as afternoon
sun, so a western exposure would be too hot for
many plants comfortable in an eastern exposure.
Many plants normally grown in sunnier areas will
adapt to an eastern exposure, so the choice of plant
materials here is quite large.
Light
shade/ high shade/dappled shade: These
are areas receiving some degree of sun throughout
the day, but seldom for long direct periods.
Areas near deciduous trees will often have sunnier
positions through winter and early spring, and many
smaller plants take advantage of this by completing
their growing and blooming period before the trees
leaf out fully. Also included in this area
would be positions near lightly branched evergreens
spaced far enough apart, and limbed high enough,
to let in the sun. Many of the plants we commonly
associate with woodland plantings are happiest here.
Trees,
shrubs, fences, and buildings all conspire to
create a changing tapestry of light and dark
throughout the day, testing the skills, and
often the patience, of the home gardener in
the process. |
 |
Full
shade: This might be an open position that receives
plenty of light but
little direct sun for much of the year, such as
areas adjacent to a north
facing wall. Also included are areas under
a medium canopy of evergreen
trees that receive filtered light for part of the
day. The choice
of plants is more limited here, but is still fairly
large.
Dense
shade: This is deep shade such as areas
under a porch overhang or between two closely spaced
buildings that never receive direct or even dappled
sun. Also included are areas under dense,
evergreen trees that effectively block out sunlight.
This is the most difficult exposure to accommodate,
and can be a challenge to landscape.
Please
note that these conditions can be altered.
If your garden is shady due to dense tree overgrowth,
you might consider some corrective pruning.
Without altering the shape or beauty of the trees,
just enough of the branches can be removed to increase
the available light. Often, enough can be
cut to change the shade designation considerably,
and this will greatly increase the choice of plant
material. Also of note is climate. In
hotter, and more southerly areas, many plants will
demand more shade than in cooler and more northerly
ones, and so it's difficult to generalize across
such a wide area. Sometimes a little experimentation
is in order, but whatever the planting decision,
thinking in terms of degree of shade goes a long
way toward making a decision as to what to plant.
Plant
selections: The following are some plants
to consider for your shade garden. I've only
included genuses here, and in many cases there is
a wide range of plants within a genus, not all of
which are shade tolerant. In many cases, plants
included in the list are also sun tolerant, so it
should not be implied that all of these plants are
necessarily restricted to the shade. Also,
I tried to come up with a list of plants that would
grow over a reasonably wide area, so I have left
out tropicals and subtropicals. The list is
by no means all inclusive -- just a small list of
plants to consider.
TREES
Many
smaller trees in nature exist as understory specimens
in mixed forests.
Several make excellent garden additions in half
shade or lightly shaded
locations.
Acer
-- Many different small maples to tempt including
Japanese, paperbark, vine, snakebark and several
others. Most have delicate branching patterns,
and provide multi-seasonal interest.
Arbutus
-- Evergreen large shrubs or small trees with small,
urn-shaped blossoms followed by red fruit.
Tough and sturdy.
Cercidiphyllum
-- Katsuras can get big, but dwarf and weeping forms
exist. Heart shaped leaves are delicately
colored in both spring and fall.
Chimonanthus
-- A small tree or large shrub with fragrant yellowish
blossoms
in late winter and early spring.
Cornus
-- Dogwoods of various types are familiar sights
in much of the country.
Unfortunately, anthracnose is taking its toll in
many areas, but some
dogwoods are more resistant than others.
Davidia
-- Dove trees are dogwood relatives, and have huge
white blossoms appearing like handkerchiefs draped
along the branches.
Halesia
-- Small trees flowering in spring with pendant
white bells hanging beneath the branches.
Ilex
-- Many hollies grow large enough that with some
pruning, they can take
tree form. Perhaps not as fruitful in shade,
but easy and adaptable.
Oxydendron
-- Also called Sourwood or lily of the valley tree,
with white blossoms
in late summer and early fall, followed by brilliant
autumn color.
Parrotia
-- Grown chiefly for its fall coloration, leaves
of Persian ironwood
often turn varying shades on a single plant.
Stewartia
-- Camellia relatives producing white blossoms with
golden centers.
Peeling bark and fall color add to seasonal interest.
Styrax
-- Usually white, but now available in pink, with
myriad little bells
hanging from the branches in spring.
Taxus
-- The yews are slow growing conifers, several of
which will achieve tree size in time. Long-lived
and permanent.
SHRUBS
The
"bones" of a garden, and many provide seasonal interest
as well as strong
structure.
Aucuba
-- Although not the most beautiful of all plants,
these evergreens are easy, drought tolerant, and
can be grown in some heavy shade.
Bamboo
-- A large group of different species, many of which
are shade tolerant
to some degree. A word of caution, though
about the running forms...
Camellia
-- Many different species, the most common of which,
C. japonica, will blossom in late winter and early
spring. Valuable for their lustrous, evergreen
foliage and shade tolerance.
Chamaecyparis
-- Many of the dwarf forms of hinoki and other false
cypress can take light shade.
Choisya
-- One of the plants known as mock orange, this
one is a mid sized evergreen shrub with small, fragrant
blossoms in early spring.
Clethra
-- Eastern natives, these deciduous shrubs bloom
in late summer, and have a spicy fragrance.
Corylopsis
-- Witch hazel relatives attractive
in many seasons. Late winter
yellow blossoms hang from the branches; provides
good spring and fall leaf color.
Daphne
-- Many different species here, but almost all are
exceptionally fragrant.
In general, they like good drainage and light to
moderate shade.
Disanthus
-- a large deciduous shrub or small tree with heart-shaped
leaves and excellent fall color. Mine turns
a deep blackish-purple every
November.
Enkianthus
-- Deciduous shrubs with urn-shaped blossoms of
pinkish or white and excellent fall color.
Fatsia
-- Large palmate leaves give a tropical appearance
but are reasonably
hardy. Tolerant of heavy shade.
Fothergilla
-- White bottlebrush blossoms in spring smell a
bit like honey, and fall color is a bonus.
Fuchsias
-- Several types are fairly hardy, and are evergreen
in some areas,
and will come back from the roots after a hard frost
in others.
Tolerant of quite a bit of shade, with long blooming
seasons.
Gaultheria
-- From ground huggers to mid-sized shrubs, these
evergreens all have small, urn-shaped blossoms,
followed by white, red, or blue fruits.
Hamamelis
-- Witch hazels bloom in late winter or early spring
with spidery yellow, orange, or red blossoms.
Many are fragrant, and fall color can be excellent.
Hydrangeas
-- Familiar to most everyone are the large, opulent
"hortensia" types, with their countless cultivars,
but there are dozens of interesting lesser known
species as well. Most are happy in some degree
of shade.
Kalmia
-- Mountain laurels are evergreen rhododendron relatives.
The spring
blossoms come in clusters, and the individual florets
are often banded
with contrasting colors.
Kerria
-- Deciduous shrubs with a lax, arching growth habit,
and yellow blossoms
all along the stems in spring.
Leucothoe--
Small, evergreen shrubs with bloom like lily of
the valley. One common form has leaves mottled and
speckled with pink and cream.
Mahonia
-- Tough, evergreen shrubs related to barberries,
with yellow blossoms
and spiny leaves that often turn ruddy purple in
winter.
Nandina
-- In areas where it is adapted, heavenly bamboo
is planted by the bazillions, in sun and shade alike.
Very drought tolerant.
Osmanthus
-- Evergreen shrubs looking much like holly,
with small, very fragrant white blossoms at various
times of year.
Pieris
-- Often called lily of the valley shrub due to
the appearance of their
flowers, these are grown as much for their foliage,
which often emerges
copper, pink, or red in the spring.
Pernettya
-- Small, evergreen shrubs grown for their fruit,
which can be orange,
pink, red, white, or purple, and last well on the
plants.
Rhododendrons
and Azaleas -- These hardly need a description,
and many different flower colors and growth habits
are represented.
Rubus
-- A large genus that includes not just the many
familiar berries, but
also several other shrubs of varying habit and garden
worthiness.
Sarcococca
-- Small, neat shrubs like miniature laurels are
very shade tolerant,
as well as sweetly perfumed.
Skimmia
-- Small, evergreen shrubs with fragrant spring
blossom, followed by red fruit.
Tsuga
-- There are several dwarf cultivars of Canadian
hemlock with a variety
of growth habits.
Vaccinium
-- Although blueberries need sun, many of its cousins,
like various
huckleberries and lingonberries, are happy in some
shade.
Viburnum
-- A wide ranging genus with dozens of choices,
both evergreen and deciduous. Many are decidedly
fragrant as well.
VINES
Not
a huge list, but many in nature grow scrambling
into trees, and are quite
happy in the garden in less than full sun.
Actinidia
-- Some of the hardy kiwis are happy in less than
full sun. A. kolomikta
in particular, is shade tolerant, and though is
fruitless, has leaves
often splashed with pink and white.
Akebia
-- Vigorous vines with 3- or 5-lobed leaves, and
small purplish blossoms
in early spring, sometimes followed by edible fruit.
Ampelopsis
-- Called blueberry climber due to its small fruits,
which will attract
birds.
Clematis
-- Some are more shade tolerant than others, and
several of the species types are well suited to
these conditions.
Fatshedera
-- A cross between Fatsia and English ivy, this
will grow in heavy
shade where adapted.
Hedera
-- Some ivies have become pests, escaping into wild
areas, but many of the smaller, named cultivars
are worthwhile, and very shade tolerant.
Hydrangea
-- Includes the climber H. anomala, which can become
enormous in time, climbing by aerial roots.
Lonicera
-- Many honeysuckles are shade tolerant to one degree
or another, and there are many to choose from.
Parthenocissus
-- Boston ivies, Virginia creepers, and others can
provide some excellent fall color.
Schizophragma
-- Resembling a climbing hydrangea, and closely
related. One nice form has silvery mottling to the
foliage.
Wistaria
-- The Chinese wistaria, especially, will grow happily
in less than
full sun. Buy grafted plants only, for earlier
flowering.
PERENNIALS
The
icing on the cake, and so many to choose from!
With such a variety of forms, many would make welcome
additions even if they never flowered.
Acanthus
-- Big, bold, glossy foliage and spires of hooded
flowers. These put the Corinth in Corinthian.
Aconitum
-- Tall spires of hooded blue, or occasionally white
or pink blossoms.
Like a delphinium for part shade.
Acorus
-- Grassy perennials useful for their spiky foliage,
which can be green
or variegated.
Ajuga
-- Some are rambunctious, others less so, and many
are valuable for their colored foliage as well as
flowers.
Alchemilla
-- Fuzzy leaves seem to always trap beads of water.
This will often
naturalize, and seems to be one of those mainstays
in many a British garden.
Anemone
-- A big genus with ground huggers to six footers.
Most will
colonize and have nice flowers.
Aquilegia
-- Columbines are cottage garden favorites, available
in almost all colors, and most will naturalize.
Aruncus
-- Goatsbeard grows like a large astilbe with plumes
of white blossoms
to four feet.
Asarum
-- Ground huggers with heart shaped leaves and unusual
maroon flowers. Called wild ginger due to
the smell of its foliage.
Astilbe
-- Plumes of airy blossoms in shades of pink, red,
or white. Some are
less than a foot, while others can hit five feet.
Aspidistra
-- It's not called cast iron plant for nothing.
Where adapted, it
is almost indestructible, growing in heavy shade
and needing little
attention.
Astrantia
-- With one of the longest bloom periods, these
will often bloom for several months.
Bergenia
-- Large, glossy leaves are evergreen, and some
turn bronzy in winter. Blossoms can appear
at various times, by species, and are pink, white,
red, or purplish.
Brunnera
-- Blue flowers like forget-me-nots in spring, with
large, heart shaped
foliage through the summer.
Calceolaria
-- Curious, pouch-like blossoms are yellow, often
mottled with brown. Its tender cousins are
called ladies' pocket books.
Caltha,
Ranunculus, and Trollius -- Various closely
related buttercups. Most favor moist soils
and have yellow, orange, or white blossoms.
Campanula,
Adenophora, Edrianthus, Symphyandra, and Wahlenbergia
-- Several closely related genera, the bluebells
offer countless choices. Some are more shade
tolerant than others.
Cardamine
-- A diverse genus with typically white or pink
flowers above interesting
foliage. Many will colonize.
Carex
-- These sedges will tolerate wet conditions and
provide tufts of green
or variegated foliage.
Chrysogonum
-- An eastern woodlander with little yellow daisies
forming in spring above ground-hugging foliage.
Cimicifuga
-- Snakeroot forms slowly spreading colonies of
dissected foliage,
topped in summer and fall by tall spires of white
wands.
Convallaria
-- Lily of the valley can form large colonies, and
its white blossoms
are beloved for their perfume.
Corydalis
-- Finely dissected ferny foliage with blossoms
of yellow, blue, pink,
red, or purple, depending upon species, of which
there are several. Some
will seed about.
Cymballaria
-- Small, scalloped foliage and tiny purple snapdragons.
Can cover the ground, or will scramble into shrubs
and up walls.
Dicentra
-- Bleeding hearts are familiar to most. Some
of the named varieties
have a longer bloom period than the species.
Digitalis
-- The common foxgloves are typically biennials,
but there are a number of true perennials as well,
growing from one to six feet.
Disporum,
Smilacena, and Polygonatum -- Fairy bells and
solomon's seal are similar in foliage, and all form
slowly spreading colonies topped with white flowers.
Doronicum
-- Dark green foliage sports numerous yellow daisies
atop one to three foot stems.
Eomecon
-- Snow poppy forms spreading colonies of foliage
like terrestrial lily pads, and is topped by small
white blossoms in early spring.
Epimedium
-- Excellent foliage, which can often emerge copper
or reddish, and the small spring blossoms can be
orange, yellow, pink, red, or white depending on
species.
Filipendula
-- Divided leaves and plumes of feathery blossoms
in white and pink. Some small, but most grow
large.
Ferns
-- Too many to list individually, but indispensable
for foliar effect in
some of those heavier shaded areas.
Gentiana
-- Legendary beautiful blue flowers have a finicky
reputation, though
several are quite undemanding.
Geranium
-- Many of the cranesbills are tolerant of some
shade, some of them quite a bit. Countless
species and cultivars.
Gunnera
-- Includes those prehistoric looking monsters,
and surprisingly some
diminutive ones as well.
Helleborus
-- Several different species, most valuable for
their early bloom
and palmate foliage. Will reseed where happy.
Hemerocallis
-- Daylilies will grow in a bit of shade as well
as full sun. Some
of the darker reds, especially, can look better
with protection from hot
sun.
Hepatica
-- Liverleafs are little woodlanders with tri-lobed
leaves and lavender
to white spring flowers. Plant where you can
appreciate them up close.
Heuchera
-- Coral bells are well known for their bloom, but
have also been available in recent years in a number
of distinctive foliage types.
Heucherella
and Tiarella -- Close coral bell relatives with
starry pink or white
blossoms with both clumping and running varieties
as well as various leaf forms.
Hosta
-- Great snail and slug food and deservedly popular
perennials as well.
Houttuynia
-- The variety Chameleon has become popular
with its foliage splashed with cream, pink, red
and yellow. It spreads a bit rambunctiously.
Hylomecon,
Chelidonium, and Stylophorum -- Woodland poppies
with yellow blossoms, sometimes over a long period.
Will naturalize where happy.
Iris
-- Various crested iris as well as western species
and their hybrids all
grow happily in woodland conditions.
Kieringeshoma
-- A big perennial with maple-like leaves and pendant
yellow bells in late summer.
Lamium
-- The most popular varieties have silvery, ground-hugging
leaves and pink or white flowers.
Liriope
and Ophiopogon -- Lily turf and mondo grass
have grassy leaves and small flowers resembling
grape hyacinth. Easy and popular where adapted.
Lysimachia
-- Some diverse plants in this genus, and with some
it's stand back and watch them grow. They
can spread.
Meconopsis
-- Some of the blue poppies are legendary, and worth
any effort to just see them bloom. The welsh
poppies, though, in yellow and orange, are easy
and prolific.
Mertensia
-- The most common form is known as Virginia bluebells,
produces nodding blue blossoms opening from pink
buds.
Mimulus
-- Monkeyflowers are sometimes sold with annuals,
but most are perennial in the right climate.
Some of the brightest blossoms in
shadedom.
Omphallodes
-- Blue forget-me-nots, and nice clean, compact
foliage. A new variety called Starry eyes
is worth seeking out.
Pachysandra
-- The most common is an easy and adaptable ground
cover for most any shady condition. There
are also some lesser known species as well.
Phlox
-- There are several pretty woodland species and
cultivars, most of them native to North America.
Polemonium
-- Jacob's ladders are so named for the arrangement
of their paired leaflets. Blue, lavender,
peach, or yellow saucer-shaped blossoms in
spring.
Primula
-- Once you get away from the common Polyanthus
and Acaulus types, there are many dozens of woodland
treasures here.
Pulmonaria
-- Sometimes called lungwort, my favorite common
name is spotted dog. Clumping plants with
leaves often splashed and spotted with white or
silver, and early spring blossom of blue, pink,
or red.
Rogersia
-- Moisture loving plants growing 3 feet or more
with bold foliage and plumes of white or pink blossoms
in late spring or summer.
Sanguineria
-- Called bloodroot due to the sap exuded, this
little native produces
slowly expanding colonies of scalloped foliage with
white bloom in spring.
Saxifraga
-- A very large genus grown for both foliage and
flower. Most are
excellent in the shaded rockery.
Schizostylis
-- Linear foliage in running colonies and star-shaped
spikes of flowers in red, pink, or white.
Best of all -- they bloom in fall.
Soldanella
-- Frilly little purple blossoms arrive in spring
and need to be seen
close up to be appreciated.
Thalictrum
-- Meadow rues are mostly largish perennials with
columbine like foliage and fluffy blossoms of lavender,
pink, white, yellow, or green.
Tradescantia
-- Linear foliage, topped in summer by glistening,
three petalled
flowers of purple, blue, pink, or white.
Tricyrtis
-- Called toad lilies , these have curious flowers
of purple, white,
yellow, or brown , appearing in late summer and
fall.
Vinca
-- Tough and aggressive spreaders, and tolerant
of dry shade. Flowers are typically blue, but white
and reddish forms exist.
Viola
-- For the most part easy and adaptable plants,
often seeding about where happy.
BULBS
Many
of the common early spring bulbs such as crocus,
narcissus, and snowdrops
are quite at home planted at the foot of deciduous
trees, blooming
before the trees are fully leafed. Here are
a few other choices.
Arisaemas
-- Jacks in the pulpit seem to be getting more popular
these days.
Interesting foliage and curious, if not beautiful,
bloom.
Cyclamen
-- Several species, most with heart-shaped leaves,
often mottled and banded with silver. Pointed,
nodding bloom at various times of the year depending
on species.
Endymion
-- Wood hyacinths are adaptable over a large area,
and will often naturalize where happy. Blue,
pink, or white blossoms in spring.
Erythronium
-- Called dog tooth violets or fawn lily, these
produce low, tongue-shaped
leaves, often mottled (like a fawn), and produce
nodding lilies
of yellow, white, or violet in spring.
Fritillaria
-- A large genus of mostly small to mid sized bulbs
with nodding,
bell shaped flowers of various shades, often mottled
and speckled.
Lilium
-- True lilies exist in a wide range of flower types
and colors. Shade
tolerance varies quite a bit.
Zantedeschia
-- The white calla lilies will grow in some very
wet conditions.
Permanent in milder areas, they can be lifted and
stored in colder
climates.
(c)
1997 Richard Akers