Success with Full Sun Perennials


The backbone of the traditional perennial border is made up of full sun perennials. They spring from the ground to give us the textures and shapes (not to mention the colours and fragrances) that make our gardens and dreams reality. It is these plants that are most often featured in garden photography and those to-die for pictures in books and magazines.

Luckily, full sun perennials for the garden are usually easy plants to grow if a few simple conditions are met:


Soils, Sunlight and Care


They generally do not like heavy clay soils. The excessive winter moisture in these garden soils leads to rotting and winter death.

Full sun perennials prefer (obviously) full sun although many will tolerate shade in the morning or late afternoon.

Getting them the sun between 9 am and 3 pm is considered crucial to success.

Like all things though, the plants are more flexible than the written word and I encourage you to experiment with new settings. If the plant thrives, you win. If it struggles, then you can simply follow the directions elsewhere on this site and move it again.
Full sun perennials really appreciate soils with high organic matter content. 

In my garden, I mulch the soil and this decomposing mulch adds organic matter. I also throw compost over the top of the plants each fall and spring (right on top of the mulch - it sinks down pretty quickly) to feed and nourish the soil. 

High organic content in soils is a key to building a great perennial garden.

Full sun perennials appreciate regular maintenance. Tasks such as deadheading, perennial pruning and division are part of the skills of the perennial gardener and there are articles on the site dealing with these tasks.

I hope the articles here help your garden; they come from my own garden experiences over the past 25 years gardening with full sun perennials.

Achillea, yarrow

yarrow Achillea (yarrow) is one tough plant for the sull sun or garden bouquet

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Aconitum, monkshood

monkshood Monkshood is a blue-flowering plant resembling Dephinium. All parts of this plant are poisonous.

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Agastache

agastache has been in every one of my gardens but here's a warning about the newer ones

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Alcea/Hollyhock

hollyhock flowers One of the tallest and easiest of perennials to grow but there's a problem with all hollyhocks

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Alchemilla

alchemilla mollis or ladys mantle Lady's Mantle with green flowers and leaves that shine after heavy dew or gentle rains

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Alliums

allium A bulb indeed but one that demands a place in the mid-summer perennial garden

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Anemone

anemone Anemone or Windlfower for fall displays of amazing color but it comes with a warning

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Aquilegia

aquilegia or columbine Aquilegia or Columbine are delghtful early summer bloomers for borders or rock gardens

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Asters

aster flowers Asters for brightening up the fall garden in a wide range of colors and heights

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Belamcanda

leopard lily Belamcanda or Leopard Lily has graced several of my gardens with its dainty flowers

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Bellis perennis

bellis perennis Bellis or English Daisy for your early spring wakeup - maybe a bit weedy but charming

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Buddleia

butterfly bush Butterfly bush for fragrance and long blooming charm - yes it attracts butterflies

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Campanula

campanula or bellflower Campanula or bellflower - blue flowers for any occasion in your garden

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Caryopteris

caryopteris While Caryopteris is a woody shrub, I cut it to the ground in the fall and call it a perennial

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Centaurea

bachelor buttons Bachelor buttons or mountain bluet is a lovely blue flowering self-sowing thug in my garden

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Chrysanthemum

chrysanthemum Mums of fall mums brighten up the fall landscape with their very long bloom times

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Coreopsis

coreopsis Tickseed is a delghtful range of plants in size and color and long bloomtime

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Delphininum

delphinium Delphiniums for tall stately blooms in shades of blue, violet and white

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Dianthus

dianthus Whether it's Dianthus, Carnations or Sweet William forms - this ia a great plant

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Echinacea

echinacea Purple coneflowers for long-season bloom, cut flowers and dynamic displays

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Eschscholzia

california poppies California poppies brighten up many a garden with their carefree orange blooms

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Geranium

perennial geranium Perennial geraniums for long-season, trouble-free bloom in sun or part-shade

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Gypsophila

babys breath Baby's breath for airy, billowy mid-summer displays of white blooms

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Helenium

helenium Helenium for the damp soil spot in your garden and amazing blooms in late summer

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Hemerocallis

daylily Daylilies now bloom all summer in a wide range of colors and flower shapes

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Hibiscus

red hibiscus A late summer bloomer it's one of the last plants to get started in my garden

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Iberis

candytuft Candytuft is a charming spring bloomer, hugging the ground in a semi-evergreen mat

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Iris Problems

candytuft A few of the common iris problems and what to do about them

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Iris

outdoor lighting General iris care tips are on this page to help you keep them blooming

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Growing Iris

iris borer Growing Iris successfully including the dreaded iris borer and other problems

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Iris japonica

japanese iris Japanese iris are special plants for damp spots in full sun - here are full instructions

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Butterfly Iris

butterfly iris Butterfly iris could be one of three different species - here are your options

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Iris sibirica

Siberian iris are one of my favorites - no staking, good blooms, easy to grow

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Iris setosa arctica

arctic iris Arctic iris are small dainty blue spring-bloomers that are bone-hardy

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Bearded Iris Basics

outdoor lighting The basics for growing bearded iris - see Growing Iris for more details

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Lathyrus

perennial sweet pea Perennial sweet pea is used as a ground cover or short climber and here's how to grow it

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Lavendula

lavender Lavender is one of our most storied of plants - and fragrant for the full hot sun

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Lavatera

lavatera Lavatera is a mid-summer bloomer in shades of reds, pinks, whites in various heights

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Lupine

lupin Lupins for their early-summer short spires and carefree growing habits

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Lysimachia

lysimachia Heavy bloomers but all are garden thugs - grow them in wide open spaces

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Liatris

outdoor lighting Liatris is a member of the aster family but the amazing spikes aren't ver aster-like

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Monarda

beebalm Beebalm for fast growing, mid-summer blooms with fragrant leaves to attract hummingbirds

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Nepeta

catnip Catnip is a stroing grower, a heavy blooming plant with fragrant leaves

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Paeonia

peonies Peonies are classic backbone plants for the perennial garden - you need them, you want them.

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Papaver

oriental poppy Oriental poppies are the scarlet ladies of the early summer perennial flower garden

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Phlox

phlox paniculata Tall Garden Phlox are long-blooming perennials for the mid to late summer bloom time.

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Perovskia

perovskia or russian sage Russian sage blooms a light blue in mid-summer - well-drained, full hot sun gardens.

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Polemonium

jacobs ladder Jacob's Ladder is a ferny type of blue flowering perennial guaranteed to win your heart

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Rudbeckia

rudbeckia Black eyed Susan (some call it Brown Eyed Susan) a great mid-summer, vigorous bloomer.

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Salvia

perovskia or russian sage Shasta daisies are delightful repeat bloomers in your garden if treated right

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Shasta

perovskia or russian sage Shasta daisies are delightful repeat bloomers in your garden if treated right

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Scabiosa

Lambs ears with soft fuzzy gray foliage and short pink spires in mid-summer

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Stachys

Lambs ears with soft fuzzy gray foliage and short pink spires in mid-summer

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Trollius

Globeflower sparkles with bright yellow globe-like flowers in mid-summer

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Tradescantia

How to grow this charming (if weedy) perennial that blooms all summer

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Veronica

Speedwell in blue or pink mid-summer spikes makes an excellent cut flower

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Ask a Full Sun Perennial Gardening Question

If you have a question about full sun perennials, then feel free to ask it using this form.

Please note - questions without email addresses will not be answered - these are entered on the page you'll see right after you ask your question. (Hey, if I can't email you the answer, how do I know you're going to read it. Note I do not use these in any way other than sending you answers and comments about this question)

Secondly, I suggest you run a search (see bottom of page) because if a question has already been asked, I tend not to answer them over and over again.

Please have patience, there's one of me and a ton of you - I can't promise to answer your question. (I'm semi-retired and do other non-gardening things)

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Perennial flower border
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