Peonies and Their Ants

And their sisters and their cousins whom they reckon up by dozens… no, no, just joking, but there are all kinds of nifty peonies.

And all of them have ants. Long ago, some observant gardener noticed that ants on peony buds always meant the flowers would open soon. Always. And so a bit of folk wisdom was born: Peonies cannot open until ants eat away the seal that keeps the buds closed.

I grew up believing this, my mother went to her grave believing it, and just the other day I heard it repeated again. But it isn’t true. The thing the ants are eating is nectar, not glue, and what this does for the peony is make sure there are plenty of ants around to eat any soft-bodied insects that might like to eat peonies.

ant-on-peony-bud.jpg

This bud belongs to a super-early short peony that opens almost a month before the common (lactiflora) kind. It was here when we got the house and all we know about it is that it’s tough. The double flowers last a long time, too, a mixed blessing given that they are – to put it kindly – magenta.

fernleaf-peony-group.jpg

When these fern leaf peony buds open the flowers will be single, in a clear true red. They’ll last about 35 seconds. And that nifty foliage will disappear by midsummer. Catalogs that describe fern leafs ( P. tenuifolia ) as rare and special seldom mention these attributes, but it’s something to bear in mind before plunking down large dollars. Oh, also they take several years to settle in and start blooming well. On the good side, they’re indestructible, even in acid soil that gets only a few hours of sun. And once you have them, you have them. Even small bits of root make new plants.

old-famstead-peony.jpg

Ok, ok, here’s a picture of an actual peony, probably Queen Victoria, one of the antique varieties that came with the place.

Peony Tips Worth Repeating:

*They do need sun, but not that much; with most varieties you can get decent flowers from a half day’s worth and the farther south you are, the more the peonies can use a break from broiling afternoons.

* Be sure to plant shallowly – those fat growth buds should be no more than an inch and a half below ground. The number one cause of bloom failure is over-deep planting… or, over time, the gradual movement of compost and mulch that buries those buds as effectively as if you had done it yourself.

* They don’t like acid soil; if rhododendrons are doing great, better you add some lime to the peony bed before you start planting.

* Fall is the best time to plant. Potted peonies can go in the ground now, but the bare root kind – the kind with all the dazzling choices - must be planted in fall.

* No peony parts in the compost! The Botrytis blight that plagues them – their own personal fungus: Botrytis paeoniae - is ever present, even on apparently healthy growth, so everything that leaves the peony bed should stay gone: discarded bouquets , the fall cleanup pile, Everything. Burn it if you can, toss it deep into the woods where no peonies will ever grow, or be deeply retrogressive and send it to the landfill.

* Peonies last a long time as cut flowers and can be held in bud stage for a month or more – if you have the room in the refrigerator. For an exhaustive and very useful treatment of cut-flower choices and procedures, download Fresh Cut Peonies,from Kansas State University.

12 Comments »

  1. Owen Jones Said,

    May 16, 2008 @ 12:19 am

    First of all thanks for the info on ants, your comments have resolved an issue between myself and my “gardener”. I said to her it was a myth. I have a fern leaf peony which last season had 36 flowers, this year May 15 Zone 3, Calgary Alberta Canada it is now emerging so the tally isn’t in as of yet. Our flowers, I must say last longer than 35 seconds, so do we have a mutation? The plant is a amazing, in my mind. Any comments?
    Regards,
    Owen Jones

  2. leslie Said,

    May 16, 2008 @ 6:18 am

    Welcome, Owen

    Glad to hear the post is helping to dispel the ant myth. Fear we have a long way to go; it seems to be very persistent.

    I am in awe of your fernleaf peony; the thing must be enormous. But I doubt it’s a mutation, I think it’s just in Calgary, 2 or 3 zones north of here. Like all early bloomers, this peony lasts a lot longer when the weather stays cool throughout its performance. And because the foliage is ephemeral, having a long growing season for IT may help explain that amazing largeness.

    Our fernleafs have been up for ages and opened 2 weeks ago ( or more; being a dreadful record keeper I didn’t write down the date). The flowers lasted for several days and then we had one of those hot blasts, temps in the upper 70’s, and that was the end of that.

    Speaking of cool weather lovers, how long can you cut rhubarb up there?

  3. Elaine Montgomery Said,

    June 11, 2008 @ 12:00 pm

    It’s taken me 2 years to get a nice looking peony plant;however, both last year and this year, I get lots of buds but something is eating the buds. I get no flowers. Can you tell me what this might be and what I can do to prevent this from happening? I love peonies!

  4. leslie Said,

    June 13, 2008 @ 2:11 pm

    Hi Elaine,

    Peony buds are often blasted by botrytis or so damaged by late frost that although they appear, they cannot swell. But obvious chomping is pretty rare. Please tell us more about the offender’s dining habits - are we talking big bites out? holes bored into the tips? damage that cannot be seen until you cut the bud open?

    I confess myself intrigued and look forward to your description!

  5. Sandi Greene Said,

    July 4, 2008 @ 2:30 pm

    The entire bud of my peonies have been eaten. I suspect squirrels as the eat the buds of my oriental poppies.

  6. Monica Anderson Said,

    July 11, 2008 @ 12:21 pm

    Hi, I just purchased a red leaf peony and planted it in my flower bed next to a common green leaf peony which is doing great - but the red leaves on the new peony are getting scorched by the sun. Do I have to replant this in a shady spot or is it trying to adjust? I live in Montana where there is little shade and lots of “big sky” and sun.

  7. leslie Said,

    July 12, 2008 @ 9:10 pm

    Elaine, it sounds as though

    Sandi

    may have answered your question. I’ve never seen it happen ( or heard of it before now) but that doesn’t mean much; squirrels will eat almost anything if you treasure it enough.

    Monica,
    Was the plant sold to you as a “red leafed peony?? I don’t think there are any. All peonies have reddish shots when they first come up in spring and some dark flowered, dark-leafed types can make a good sized red bush before they start turning green. If what you bought was one of those, that new foliage would be very tender, easily burnt by sun and wind. If you can nurse it along this first summer so it gets a chance to put out some roots, it may well do better next year.

    Or it may not. Peonies prefer to be planted in fall, and that’s when specialists ship their wares, so if this one never takes hold you can still replace it this year.

  8. Sandi Greene Said,

    July 23, 2008 @ 6:03 pm

    Leslie,what you say of squirrels is so true. I watch them tear around my garden being so destructive. It almost seems intentional.

  9. leslie Said,

    July 23, 2008 @ 9:14 pm

    Hi again Sandi

    Guess you could say it IS intentional: they intend to eat something tasty. The really tough part is that it’s not malicious; they don’t know they’re driving us crazy, which sort of makes it worse.

  10. Sandi Greene Said,

    July 26, 2008 @ 11:16 am

    Thanks for the reminder Leslie,
    It is sometimes hard not to anthropomorphize the little critters and to think they are harbouring some malevolence. I came out this morning to find the flowers on one of my rose bushes eaten. I think it must be squirrels as I don’t really know what else it could be. It is frustrating to say the least.

  11. Rachael Said,

    November 9, 2008 @ 7:12 pm

    Hi,
    I would love to have peonies in my yard. When should I plant them and is there an online store to purchase?
    Thanks,
    Rachael
    PS- do they like sun, part sun or shade?

  12. leslie Said,

    November 11, 2008 @ 10:46 am

    Welcome, Rachel

    I should have put Peony tips (above ) in bold a lot sooner! Most of your questions are answered there. And - because I LOVE peonies - there are several other peony posts. Easiest way to find them is to search for peony in the ” search” box on the right, near the top of the page.

    As far as I know, all the first tier peony nurseries sell online. Two of my favorites are Klehm’s Song Sparrow and Adelman Peony Gardens .

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