13,520 Garden Web Discussions | Perennials

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lisanti07028(z6NJ)

First, don't dig them up until you are ready to plant them - get the new place ready, then dig them up and put them right into the new spot, like in a couple minutes so they won't dry out.
Second, get them out from under the roses CAREFULLY. If they are right up against the base of the rose, you probably want to do it by hand. If the yarrow is farther out, you could take a pitchfork and wiggle it slowly under the roots of the yarrow and rock it gently until you can get it out.
I don't know of any problem in growing yarrow with your roses, as long as it's not too close, but you could check in the Roses or Antique Roses forums.

    Bookmark     July 3, 2012 at 10:39PM
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woollady(z8 CA)

thank you lisanti,for your reply.i will do as you sugest.thanks.

    Bookmark     July 4, 2012 at 12:45PM
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gardengal48 (PNW Z8/9)

Not sure I can be of much more help. Herbaceous hibiscus are most often native to very damp or marshy soil locations, although they will tolerate drier conditions once established. Not prone to very many disease issues either, even though what you describe is more indicative of a rot. Can you post a photo?

I fully understand the climate in eastern WA - I've lived here all my life and used to be a wholesale nursery sales rep for eastern WA :-) If you are a 'real' zookeeper (as in animals and not kids :-)), didn't realize there were any of those east of the mountains so didn't make that connection.

    Bookmark     July 3, 2012 at 6:42PM
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terrene(5b MA)

I wonder if you have voles eating at the roots? I had terrible vole problems in the front garden since the winter of 2011, and the first sign that a perennial was compromised is that the foliage starts to wilt and die back. Then, if you lift the shoots of the plants, you can see that sections of the root ball have loosened. Also the soil gets disturbed and fluffed up by the vole digging.

Solved that problem with a castor oil mixture and hardware cloth cages around the root balls!

    Bookmark     July 4, 2012 at 2:29AM
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wieslaw59

I'm not sure I understand your problem. Do you want to reduce the size? Then you must dig really deep, the smallest piece of root will send a new shoot. Do not plant it close to other plants, it will 'eat them alive'.

    Bookmark     June 30, 2012 at 7:16PM
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oliveoyl3

When you dig the roots are broken & in essence multiplying the plant as you describe. If you want to remove it entirely you'll need to dig up the entire area, which with a tree might not be possible. Easiest to dig in early spring, right?

You could try to coax more blooms with compost & water. Possibly the digging has disturbed it. They don't like disturbance & won't bloom.

    Bookmark     July 4, 2012 at 12:41AM
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Dexz7

OK...I planted 24 bare root astilbes back in middle spring time. They exploded in growth...dark green with the tops shooting up fast. They are still rich in color. Now with the heat, I noticed that some of the branches are dying on two of them. Yet, the rest of the plant is doing fine. Is this because the roots are not big enough yet for the whole plant, or what? they are in about 80% shade, which I believe that I need in the upstate of SC...because it can get very warm in the summer months.

If anyone has any great ideas, I would love to hear them.

    Bookmark     July 3, 2012 at 3:22PM
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oliveoyl3

Astilbe goes dormant if dry thus the brown branches, but doesn't mean the plant is dead.

In August 2010 I bought five 2 gallon pots with brown & dry Visions of Pink for $1 each at Lowe's with the hope that they'd just gone dormant because of drought at the store. I watered them well for a week then transplanted in a lasagna bed with lots of rich compost. They still looked dead.

In spring new shoots formed & I removed the spent stems. Last year's bloom show was great with the 5 plants producing numerous stems each.

I planted in 2 staggered rows with 3 in the back & 2 in the front. A photo showing the blooms just beginning to open mid July last summer (middle right).

I removed 2 of them in early spring and divided one of them for 3 plants in the entrance garden at our camp. The plants look just like the ones in my backyard even in the less rich soil. I plan to spread rabbit manure mulch this fall to ensure nice blooms next summer. U have done that for my other astilbe.

Pics from summer 2011 - Astilbe Cattleya planted spring 2009 1 gallon pot divided into 2 halves

Besides being full of pink selections (my favorite color) I love that astilbe blooms can be dried as everlastings when picked before the blooms fully open. I have had a lovely bouquet of astilbe, chives, ornamental oregano, & Lunaria money plant on my computer desk since last summer!

    Bookmark     July 3, 2012 at 11:16PM
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wieslaw59

My experience with Knautia macedonica is that it blooms all summer long, but not many flowers at any time. Besides, it is not very long lived in my experience.

    Bookmark     June 29, 2012 at 12:53PM
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arbo_retum(z5 ,WinchstrMA)

i have lost this fantastic bold foliage plant 3 different yrs. But trying again. Flowers are def not pink, rather crimson/burgundyish. just starting to flower now; use it on bed edge as it keeps very tidy.

    Bookmark     July 3, 2012 at 10:59PM
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denninmi(8a)

Certainly looks like phlox to me.

    Bookmark     July 3, 2012 at 9:43PM
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arbo_retum(z5 ,WinchstrMA)

agree .late blooming phlox do exist.

    Bookmark     July 3, 2012 at 10:49PM
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TomNorthJersey

Glad I posted this as soon as I got it and thank you so much for your quick responses. I received a small cutting. pulled it out and chucked it in the trash as I have pets. The person that gave it to me didn't want it back.

Thank you so much for your quick replies!

    Bookmark     July 3, 2012 at 4:42PM
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buyorsell888(Zone 8 Portland OR)

Oleanders are poisonous but they are very widely used in subtropical and desert climates around the world. There are literally millions of them out there. Many other common plants are poisonous like ivy, Rhododendrons and daffodils...

    Bookmark     July 3, 2012 at 7:45PM
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mosswitch

When mine finish blooming and set seed, they always lose their color and flop, doing their daffodil imitation and go dormant . I always cut them to the ground when they do that, they always come back next year. Whether or not they go dormant depends on the weather, when it is really hot and dry they always do.

Sandy

    Bookmark     July 3, 2012 at 5:47PM
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buyorsell888(Zone 8 Portland OR)

Mine always flop.

    Bookmark     July 3, 2012 at 7:42PM
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wieslaw59

Miclino, lily beetles is not something you chase. They are not running anywhere. The procedure is : YOU SEE IT YOU SQUASH IT(two nails is enough). It is as simple as that. There is absolutely nothing more in it. No need to rip your clothes to shreds in despair. If somebody has THAT little time , then why grow lilies in the first place? You will have to find time once you have them , or if one is THAT lazy , quit growing lilies

    Bookmark     July 2, 2012 at 4:27AM
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garden_for_life(5b/6)

Thank you all so much, I am sure it is the weather now. denninmi , marquest, diggerdee, and ispahan - I agree with you all. We had the same weather in upstate NY - summer in March, 3 hard freezes in April, now drought and broiling conditions. But I'm relieved to know that the damage isn't permanent.

    Bookmark     July 3, 2012 at 4:56PM
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mnwsgal 4 MN(4)

Also check your library or book store for books about growing perennials in your state. There are several books that cover growing perennials in Mn in our local library. Also visiting local public gardens will allow you to see how plants grow in your area and some interesting combinations.

In the long run Ken is right. Nothing beats trying something and then trying something else. You may find some things you like for now but one day you will most likely want a change, just because...

Consider adding your zone or state to your Garden Web name as it helps others respond to your questions.

    Bookmark     July 3, 2012 at 3:05PM
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rock_n_ruf(5)

That stupid zone thing just doesn't seem to stick.
I know I can add it to every post I make(like I just did), but I changed it in my profile a few times and in every post it just doesn't seem to keep...
Thanks to all! I'm going to go this weekend and look for some ideas. Like I said, this is all just the planning stage.
Thanks again! Have a great 4th!

    Bookmark     July 3, 2012 at 3:36PM
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ninamarie(4Ont.)

I really like the Geranium 'Dark Reiter' series. The foliage is very beautiful and very dark - near black. It's an easy grower, and the lovely blue flowers are almost a distraction. Mine are in full sun, though I suspect, without having tested it, that this geranium would work well in shady areas too.

    Bookmark     July 3, 2012 at 11:30AM
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oliveoyl3

Tough to get purple and low because so many that I think of are taller.

Would a see through type foliage plant work such as Husker's Red Penstemon?

I really like Firecracker Lysimachia & cut foilage back because I prefer the purple leaves & skip the yellow flowers. I put them in pots near our dove cages to greet me daily when I feed them. Still it will be taller & kind of floppy, so might not be the edger you want.

One way to keep ajuga in it's place is to sink a large pot of it & keep the runners clipped. When it's above the other plants those runners don't root.

Maybe try one of the brown Carex ornamental grasses there for a neat front of border plant. I had some further back last year, but pulled them forward this year and to a corner in some beds and I like it better. The longer tips types aren't my favorite unless in containers because the tips get caught up in other foliage. I've often been tempted to snip the tails.

Many of the annual in your zone red flowered snapdragons have dark foliage or possibly darker markings on tender perennial geraniums. Many have very lovely accents.

Here is a link that might be useful: firecracker

    Bookmark     July 3, 2012 at 2:34PM
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diggerdee zone 6 CT

Funny George, I thought Yellow Archangel was a lamiastrum also, but when I looked it up earlier today, I kept seeing it referred to as lamium. Hmmm.

I think way back when, when I first started gardening, I had Herman's Pride, and it did beautifully for awhile, till I managed to kill it off. That is one that I would try again - and maybe now is the time, lol! What with my l. maculatum dying out on me...

:)
Dee

    Bookmark     September 19, 2007 at 9:52PM
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oliveoyl3

I sought after lamiums after I read about them in Marianne Binetti's books as slug resistant easy care plants to let roam under shrubs and trees. She suggested to dig out clumps to put in hanging baskets or deck containers in part shade as fillers.

There is a big difference between yellow flowering ones & the pink/white ones.

I've been happy with them, but have noticed they have different levels of vigorous.

My current favorite is Aurea for it's golden foliage plus bright orchid blooms that attracts the hummingbirds in a hanging basket near our hot tub. It grows nicely outward down & up again in baskets.

My least vigorous is a white leaved purple pink flower, perhaps Red Nancy. It brightens up shady corners, but isn't liking container growing. I put some of it in the ground as well and is a slow grower as compared to white stripe green leaved bright pink flowered one, Chequers.

I favor 4-5' sweeps of them as 18" wide edgings in shady beds. In early spring I cut back any scraggly stems to make it tidy. Then I cut back again quite hard after flowering for good foliage all summer. These cuttings can easily be rooted for more plants to give away.

I've only purchased one lamium Aurea as the others were from plant swaps often in a plastic bag as bareroot clumps. They appeared almost dead, but water perks them right up especially after getting back into soil.

The best part is they're so easy care because they flower in the shade without fertilizer, water, or slug bait protection. I've tried some in sunnier beds and as long as kept moist or in part shade or away from heat reflecting pots, rocks, or garden ornaments they do better. Also, they don't need any fertilizer to bloom well.

The 2nd year in the ground growth is amazing! I wouldn't hesitate to plant them.

    Bookmark     July 3, 2012 at 2:22PM
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denninmi(8a)

What is your watering and fertilizing regimen? Maybe you are overdoing it, causing this growth?

    Bookmark     July 3, 2012 at 10:03AM
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onthebrinck(6 Central New Jersey)

I do neither

    Bookmark     July 3, 2012 at 10:25AM
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miclino(5)

Planted last fall in a tough location so still small this year. Will let you know next year.

    Bookmark     July 3, 2012 at 9:41AM
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netcub(5)

I ordered them Online, and when I received them they were beautiful. I havent replanted them yet because I was moving, and It seems like the new growth is void of the Mold. The seller said most of the time the mold will go away with the new growth. They said to keep them informed.... I did put them in a sunnier location and they seem to be doing better.

    Bookmark     July 2, 2012 at 7:56PM
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ken_adrian Adrian MI cold Z5

i see pretty active bud growth under those whompin large leaves..

personally.. i would probably just cut off the worst of the lot.. and give the energy to the new ones ...

and i would probably repot it into a larger pot.. with a better soil mix..

sedum.. in general;.. like a drink.. and high drainage .... and that potting media is not that..

the media its in .... hold a great amount of water.. for the greenhouse.. to aid in the rooting of the cutting ...

it wants to grow up now... so it needs different media ...

unless i am mistaken.. that plant can get near 2 to 3 feet round.. and you should easily conceptualize.. that that tiny pot will be insufficient in the long run ..

ken

    Bookmark     July 3, 2012 at 8:35AM
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