13,520 Garden Web Discussions | Perennials

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mistascott(7A VA)

You can cut back daylilies whenever you wish and they will grow new leaves (unlike daffodils). You can shear them to an inch or two or leave more if there is already new growth at the bottom of the plant. However, they need to stay moist in order to regrow and some compost would help it to generate that fresh growth.

The same goes for irises, though they look rather unsightly after being trimmed and the only reason to do so is if the leaves look unsightly already due to disease or leaf death. DiSabato-Aust (pruning guru) recommends cutting them down completely after a killing frost but leaving them be until then.

    Bookmark     August 20, 2012 at 9:57PM
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mistascott(7A VA)

Unlike daylilies, bearded iries do not tend to produce much regrowth, and if they do, it is very slow to happen. Hence, the different recommendations for each.

    Bookmark     August 20, 2012 at 10:18PM
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mxk3(Zone 6 SE MI)

"I have a deer skull*, which I am thinking of impaling on a stake and embedding that in the area to be protected."

Now that would be flippin' fabulous! :0b

    Bookmark     August 20, 2012 at 6:40PM
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aachenelf z5 Mpls

or one could say: "That's different"

I'm generally not a huge believer in these home remedies like dog hair. Maybe my squirrels are just really paranoid or had a bad experience in their youth or whatever. Squirrel populations in other parts of the country may be more mentally stable or just plain smarter. I'll keep using it because it isn't hurting anything and does add a bit of nitrogen to the soil as it decomposes.

I did try the bowls of water around my tomatoes last year and the squirrels ignored them. Plus my tomatoes are located about 15 feet from my pond, so there was plenty of water available.

Kevin

    Bookmark     August 20, 2012 at 6:51PM
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jodikay

mnwsgal - that sedum is autum fire. i called it autumn joy in error.

kevin and purleinopp - love sedums as well. one of my new favorits is Xenox. great color! i have a few others as well.

thanks for the comments.
Jodi

    Bookmark     August 17, 2012 at 9:25PM
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mxk3(Zone 6 SE MI)

I love pinks and purples, too - particularly in the summer, they lend a cooling, calming effect. (but not warm pinks, I *hate* warm pinks!).

    Bookmark     August 19, 2012 at 3:00PM
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mad_gallica(zone 5 - eastern New York)

Catmint doesn't seem to care. There are things that have to be cut back in the fall, and things that shouldn't be cut back in the fall. It isn't in either of those categories. If I get everything that has to be done, finished, and get to it - great. If I don't, no harm done. I usually get about a third of them done.

    Bookmark     August 18, 2012 at 11:14AM
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mxk3(Zone 6 SE MI)

Agree with mad gallica re: cut it back whenever you get to it

    Bookmark     August 19, 2012 at 2:54PM
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karin_mt(Zone 4)

I know what you mean about dividing dianthus. Sometimes the plant makes a big wide mat and there are not too many obvious stems going down into the ground. If a nice piece comes off I will plant it separately, but most of the time I propagate it by moving the little seedlings around.

And I do the same thing with moving plants around. I don't have any shady places that are also near water, so it's a bit of a hassle to keep things happy in pots for very long.

    Bookmark     August 19, 2012 at 12:25AM
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mxk3(Zone 6 SE MI)

I'm going to transplant a few of my coneflower today - the weather has finally cooled (it's like a spectacular fall day here in SE Michigan, not what you'd expect for August...), which is probably more important for me than the plants :0p

    Bookmark     August 19, 2012 at 2:50PM
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Scott

It looks like you are in zone 7. I have read that will grow in zone 5 on up. I have also read only zone 7 on up. I have read zone 6 on up. I wonder if anyone in a zone 5 or 6 has had success with it.

    Bookmark     August 18, 2012 at 6:04PM
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mistascott(7A VA)

Funny, I see a range of zones from 4-7 as the minimum, so who really knows. I say just try it and see. The Dave's Garden site reports that people in Zone 6 have had limited success with it making it through the winter. Apparently, it appreciates some shade too. Good luck.

    Bookmark     August 18, 2012 at 6:57PM
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tepelus(6a SW MI)

I think the reason mine flopped, and so many other plants, is because before I planted them last year as babies, I had the entire bed amended with horse manure while my boyfriend till it up, so perhaps the soil was too rich for the plants and they all grew too quickly and flopped. They are in a full sun situation, well, full sun from about ten in the morning until about four or five in the afternoon for most of the summer. So it isn't lack of sun, I do think the reason is the horse manure.

Karen

    Bookmark     August 18, 2012 at 8:49AM
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mori1(5b/6a)

DO NOT FERTILIZE!!!!! Water the first year then after that leave them alone. These drought resistant plants. These are only plants that I didn't water during the drought that bloom.

    Bookmark     August 18, 2012 at 3:08PM
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Campanula UK Z8

a sharp pair of kitchen scissors sorts the slugs out, I find, neatly severing slimy beasties in half.

    Bookmark     August 18, 2012 at 12:16PM
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wieslaw59

Any sharp scissors will do, not only kitchen. It is enough to cut the head off, then more of the slimy stuff will stay inside. I have noticed, that when the corpses are dried up by the sun, some of my chickens will eat them. They do not eat them while they are slimy.

    Bookmark     August 18, 2012 at 1:52PM
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rouge21_gw(5)

gardengal48 wrote: You want irrigation water to penetrate down the full depth of the root zone - 8+ inches for the vast majority of plants - that's where the recommendation for low and slow and infrequent watering comes into play.

I need to work on this i.e. I admit I water too frequently and not deep enough. This is in part because I have too many plants which cant be reached with a hose so I am forced to water using a good old watering 'can'.

    Bookmark     August 17, 2012 at 5:54PM
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joe_thurston(Z4 MN)

Wow, it appears I missed something - "if the peat moss has been properly hydrated." Oops.

I only mixed it with soil in my wheelbarrow dry - I never hydrated it. I did water like crazy after backfilling - does that count as proper hydration? If not, is there a way to properly hydrate once the deed is done? What's the best way to hydrate BEFORE I incorporate into the soil? So many questions.

BTW, on my astilbe. Since I bought three of them this spring, I thought I'd try an experiment. Last night I watered just one of the wilting Astilbes, and kept going with the watering can four times. That's 8 gallons of water for one plant. The soil just kept sucking the water in, in small batches, never slowing down. I think I could have even kept going. This morning it looks a little better, standing up straighter. The others continue to look wilted. I wish I had eyes that could see what was going on under there ...

"low and slow and infrequent" - very interesting way to think about it. I am trying to tune in to what my garden is saying - it's looking better every year. Some plants are easier to read than others.

-jwt

    Bookmark     August 18, 2012 at 11:53AM
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gardengal48 (PNW Z8/9)

Once it is established do you provide supplemental water?

No. This is a very drought tolerant plant and should need no irrigation after establishment. Especially in areas that "normally" receive decent summer rainfall. I live in a recurring summer drought area - we receive less than a 10th of our annual rainfall during the summer months - and even under our normally very dry summer conditions lavender needs no supplemental watering.

Different types of lavenders bloom at different times - the Spanish or L. stoechas is the earliest (begins in April in my area), followed by English or common lavender (L. angustifolia - starting in mid to late June) and wrapped up by the hybrids or xintermedia cultivars like 'Provence' or 'Grosso' in July (all timing is appropriate for my area only). 'Blue Cushion' is a cultivar of English lavender. The bloom period for any type is extensive, lasting most of the summer and in some areas, well into fall and can be increased by shearing or deadheading.

    Bookmark     August 17, 2012 at 3:55PM
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rouge21_gw(5)

Thanks for the detailed information gardengal48.

    Bookmark     August 17, 2012 at 5:16PM
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gardengal48 (PNW Z8/9)

Phlox paniculata, perhaps 'David'.

    Bookmark     August 17, 2012 at 3:35PM
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doloresfern

Thanks for the info.

    Bookmark     August 17, 2012 at 4:00PM
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rouge21_gw(5)

It is my understanding that this is the first season for (widespread) availability of the "Sombrero" coneflowers.

    Bookmark     August 16, 2012 at 9:37PM
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echinaceamaniac(7)

First season...but I can tell already they have lots of branches at the crown which means better survival over winters. The blooms are not distorted or randomly quilled like some other varieties. These are tough just like the Pow Wow plants. I'll update my comments next spring, but I am already impressed with them.

    Bookmark     August 17, 2012 at 3:05PM
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morz8(Washington Coast Z8b)

One of our local GW gardeners has ordered from and visited that nursery and seemed pleased overall...His notes include some photos of the packaging and his purchases.

Here is a link that might be useful: nursery review

    Bookmark     August 17, 2012 at 7:59AM
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MollyDog(6 PA)

Phlox is really tough as long as you get good roots...easy to do since they have thick, but shallow roots.

    Bookmark     August 16, 2012 at 9:34PM
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Spicebush

That sounds good! I think I'll just do it. Most of the seedlings are magenta but there are several that are really pink and so pretty.

Thanks to everyone for the advice!

    Bookmark     August 16, 2012 at 9:40PM
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daysquid(7a Annapolis, MD)

campanula - thanks for the explanation. I really appreciate it. I read somewhere that it's nice to have some foliage of other plants around when the hellebores are blooming (and all their foliage is removed). Any thoughts on this?

    Bookmark     August 16, 2012 at 4:04PM
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MollyDog(6 PA)

I'm sorry I wasn't clear. You certainly would want to cut the old hellebore leaves off as they are quite ugly come spring and to showcase the flowers. I recommended the minor or smaller bulbs because of having to deal with the old foliage of daddodils which seem to stay on forever and a day. Hellabore flowers remain beautiful for a long time....I wouldn't want to detract with the old daffodil leaves.

    Bookmark     August 16, 2012 at 4:29PM
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