dianthus flowers comes to mind

Irises are my favorite perennials, but they may be too tall for your purposes. Sea Thrift grows here- don't know about your zone. My mom uses Princess series alstroemeria Peruvian lilies. I use ivy geranium, and there may be some true geraniums in pink.

Renee

Can you give us a little more information of your desires. Do you want this plant to fill in around your other plants? How tall do you want? How wide? Is this a full sun position?
Maybe something like this?
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Flora

Clara Curtis Daisies are pink with a yellow center, low growing and they spread fast.

First thing that came to mind is Salvia Sensation Pink. Not too tall and really pretty.
Cher

Hi Flora,

Your garden is lovely! Which rose is that?

What I'm looking for is something to brighten up my cottage garden. I have a lot of red and purple, with some yellow. the pink is a great "bridge" between those bright colors. Every year I plant pink petunias and/or geraniums, and they work really well. But I'd like a perennial so I don't have to plant every year. I'm not too picky on the width, but the height shouldn't be more than 18" - 24".

Cher: Is that Salvia Sensation Pink a perennial? I don't think I've ever seen it. It sounds like it might work.

Mandolls: Those daisies sound great also and, again, I don't recall seeing them in the nurseries. But I'll look for them.

I have some dianthus in another bed, and that might work for me. I wish I could grow Alstromeria, but it gets too cold here for them.

Thanks for all the info, gardeners. I really enjoy lurking in this forum because of all your photos and information.

Purple coneflower.

And don't forget cosmos for annuals.

I don't know if these would be suitable for your zone but here's a few that come to mind.
Aquilegia
Peonies
Monarda
Poppies
Veronica
Lychnis 'Angel's Blush'
Penstemon
Platycodon
Scabiosa
Sidalcea

Annette

what about coral bells (heuchera) - there are some really wonderful leaf colors now and you can get pink flowering ones too. Walmart had a gorgeous one that had purple leaves with bright pink splashes on the leaves - big and bold .....

Lynne

This is a great forum, my favorite right after the Daylily Forum. Welcome and stick around. Don't have any suggestions for perenials though.

If the annuals have been working well, you will need a selection of perennials to achieve all summer color. I like to use foliage of different colors/textures so the flowers are really secondary.
The rose in the pic is red double knockout....a very easy care one.
Flora

This penstemon, at the base of the birdbath, was bought at High County Garden last year and returned this spring.

{{gwi:668577}} I also have a pink butterfly bush, and some pink perennial verbena. Also portulaca can reseed pretty easily...I had some pink foxgloves, which may reseed for you also if they like where they are planted.

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My mother called it thrift, but there is a pink creeping phlox that blooms in the springtime:
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Clematis: This is Comtesse de Bouchard, but there are many pink ones:

guara - This is just loaded and triple the size here, now.

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I like pinks and purples in my country garden too.
kay

If you can go up to 18" or so, you can use mini roses.

I'll second dianthus. I don't do much with pink perennials since I have pink & red roses, so I don't have more suggestions than that. Actually, a great late bloomer that smells devine is (are?) 4 o'clocks. They have a nice, neat shape, too. I know they're more like annuals here, but the seeds are so easy to collect, and they're so fun to start from seed. You can also dig up the tubes in fall and replant in spring.

I love pink altho I'm not very fussy so have acquired a lot of hardy pink flowering plants. I also use pink annuals for longer bloom.

Here are some of my pinkish perennials.

Acquilegia...

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Pink Dot Com lily...

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Darker pink lily - lost the name...

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Daylily Catherine Woodbury... slightly mauve

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Fleabane...

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Low growing sedum. I also have Autumn Joy but don't have a pic handy.

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Lamium, also low growing...

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Common chives, kinda pinkish-mauve - and edible also...

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This may be a weed but rather pretty, especially in a swath. Works well in my large garden. It may be Prairie Mallow or Evening Primrose...

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Peony poppy a great self-seeding annual here...

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Pale pink yarrow...

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Darker pink yarrow...

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Can you tell I'm bored with all the rain!

Forgot to say Welcome to the forum! Have you posted pics of your garden here yet? We do love pics! :-D

Peony poppy?? What the heck... why have I never heard of that? Lovely!

I love pinks.. quite frankly if you had a whole garden of pink I probably would be quite satisfied..

Knautia Macedonia "melton mix"

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Prytheum Daisy pink mix

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Candy Mountain Foxglove .. now gone.. I couldnt stand the foilage that went crisp brown right after flowering.. so out it came.. too bad as the flowers are pretty.

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Forget me note, rosea sylvania or something like that, just search for pink forget me nots

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Rosa Comte de Chambord

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Annual Asters crego mix.. so its just not pink , but I like them all

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Rondo Penstemon.. lots of pink shades

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Cosmos.. picotee is all rose and pink shades

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purple coneflower.. always way more pink to me than purple.. ive never eally seen a true purple in coneflowers..

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You couldnt get the below becuase its one of my seedlings.. but to show you what kind or rose pink range you can get in daylilies

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and this one

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Let know one fool you, pink is the true color of roses.. the one color that you will see the most in all of different forms, the modern mind might think of those high stick in the mud reds.. but alas not so, the gentile form of pink lax against the matte green , with the bold intense scents is what made rose lovers swoon for the last 2000 or so years.

Surpasse Toute

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Heritage

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Great Maidens Blush

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A Japanese Iris , Dirigo Pink Milestone

Im sure you could get a billion TB iris in that range.

One of my favorite roses.. Isaphan
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Silverkelt