13,520 Garden Web Discussions | Perennials

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mistascott(7A VA)

This link explains some of the confusion about why there can seemingly be frost at air temps above 32 degrees.

If you are only scheduled to have surface temps of 37, I would say it is unlikely that you see frost, especially if there is any sort of wind going on.

Here is a link that might be useful: Frost

    Bookmark     March 26, 2012 at 11:26PM
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ken_adrian Adrian MI cold Z5

ahhhh

if garden could so simply be reduced to scientific certainties ....

IMHO .. there are too many variables to come to any answer with specificity ...

temp is not the only variable ... you must add .. cloud cover .. wind.. micro climate .. and elevation ... and suburbia ...

e.g. .. across my 500 foot wide lot.. which is 8 feet lower in the center 100 feet.. cold air pools as it move from high to low.. since warm air rises.. and many springs.. the forsythia/yoshino cherry ... down there do not bloom in bad years ... due to frost or freezes

so if the forecast is bad.. you have to either go zen.. ala doris day .... what will be will be ...

or you take action.. if you wish ....

but your decision can NOT be made on some precise forecasted temp ... NEVER FORGET ... mother nature is a cruel mistress ... and it brings her supreme delight to mess with our heads ...

ken

Here is a link that might be useful: link

    Bookmark     March 27, 2012 at 8:10AM
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kentstar(5b, NE Ohio)

Mine are all up and starting to bloom but seem to be blooming much smaller this year than last. Hmmm...

    Bookmark     March 25, 2012 at 5:28PM
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linlily(z5/6PA)

My Brunnera is not completely up as large as it should be but it's blooming already. Tonight, though, we are to go down to 26. My plant is next to the house, in a protected area so it should be all right. We did cover the Maiden's Blush lilac that is already starting to bloom. I hope it will make it without cold damage.

Linda

    Bookmark     March 26, 2012 at 7:58PM
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gardengal48 (PNW Z8/9)

If planted early enough, columbines will bloom their first year from seed. Typically, established plants will self-seed freely and produce flowering plants the next season. Since they tend not to be a very long-lived perennial, that's a good thing as they continually produce replacements if you do not deadhead. The plants are quite promiscuous however and will cross pollinate with each other wildly so be prepared to to enjoy offspring that do not necessarily resemble their parents.

    Bookmark     March 25, 2012 at 5:51PM
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Carolinaflowerlover NC Zone 7b

Thanks! Mine seem to be about the same height as ones I saw at Home Depot, so I hope that means they will. I am fine with different colors...they all seem pretty! Thanks for the reminder to not deadhead.

    Bookmark     March 26, 2012 at 7:23PM
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mnwsgal 4 MN(4)

Little Titch has done well in my garden.

    Bookmark     March 26, 2012 at 1:28PM
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linaria_gw

poor soil and good drainage helps to keep them compact

bye, Lin

    Bookmark     March 26, 2012 at 4:30PM
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gottagarden(z5 western NY)

Mine are in full sun, I'm pretty sure they prefer sun but will be okay with some shade. Full shade would probably have them fade away . . .

    Bookmark     September 12, 2011 at 6:32PM
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christinmk z5b eastern WA

Not sure if anyone is at all intersted in the outcome but...it lived!!! I am thrilled. I looked out last week and there was nothing, looked again yesterday and pink buds are welling up!

I actually DID end up moving the plant to the wine barrel planter behind the shed, where it is shady and cool. The last leaf died off soon after, but I decided to let it be and see if it would retun in fall or spring. So pleased it did! I wish I had a spot in the garden it would like, but at least it is living where it is- hopefully it won't mind life in a pot.

I will be interested to see if it goes thru the same die-back process come summer. Maybe that is the norm with this plant...
CMK

    Bookmark     March 26, 2012 at 3:02PM
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kooshball(7b)

Thanks for the response but I am looking for something with a bit more spread but still remaining upright in form.

    Bookmark     March 22, 2012 at 9:47AM
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conniemcghee

I love my Greenspire Euonymous. Haven't had any issues with it yet - I hope I don't!

Another one I've just gotten is Green Tower Boxwood. I think it has similar ultimate size as Greenspire.

    Bookmark     March 26, 2012 at 11:14AM
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monarda_gw

I was horrified at how much they had spread and pulled out most but left a few. But those few were so welcome at the end of August I was glad I had left them. They made the whole garden, they were so cool and sparkly. I am now looking forward to planting the soft pink alium Summer Beauty to make a similar effect as soon as it gets affordable.. Saw it at the Lurie Garden in Chicago -- it was splendid and hopefully it will be more manageable. Meantime I'll pull up as many Chinese chives as I can this spring but leave a few for August.

    Bookmark     March 26, 2012 at 1:46AM
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laceyvail(6A, WV)

In my experience ANY ornamental allium allowed to go to seed will take over the world.

    Bookmark     March 26, 2012 at 6:07AM
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grandmachris

Terrene,

I'm glad you mentioned recent transplanting. We had big rain all day Friday and thunderstorm during the night. The
first lawnmowing is due Monday and I have about 10 clumps of gh which have meandered out into the grass. Usually I
bring them all back in the beds when they grow foliage in the early fall, but I'm going to emulate you and try it now. We're zone 5 also and have been having very warm weather until today when it's back in the low 60s.

Grandma Chris

    Bookmark     March 24, 2012 at 7:54PM
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terrene(5b MA)

Grandma, I started transplanting around the first day of Spring, bulbs and mostly perennials that are in beds around the foundation of the house, where it warms up fastest.

This year I actually planted 2 Amaryllis bulbs on the south side of the house even before Spring started! I was annoyed with them because they sent up only foliage this winter, and so they were banished outside, about 6 inches away from the foundation. With a little organic bulb fertilizer. I am not worried about frost because the foundation is warm and prevents frost from reaching that close to the house. They are actually doing quite well, but it's been dry, so I water them pretty regularly. Maybe I can bring them in and they will bloom next winter.

    Bookmark     March 25, 2012 at 1:19PM
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grandmachris

I got my tabernaemontana from a deserted neglected planting
whose owner had planted them out by the road on an easement
and when she died no one but me knew they belonged with the
"back house". After identifying and watching them for about 3 years I asked permission and came digging. The roots were very huge, warty and tuberous. I nearly destroyed them and myself digging them out! However they
survived and when they came up the second year I divided
the clump but I haven't looked underground since. If I
do, I'll send you an e-mail. I love that plant and I always get attention with it because no one seems to know
it around here.

grandma Chris

    Bookmark     March 24, 2012 at 7:43PM
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ken_adrian Adrian MI cold Z5

put this in your newbie head

the bigger the flower.. the more sun it needs ..

so comparing the little plain old red to the big foo foo. hybrid.. well

want to take a wild guess.. which one will need a little more oomph .. or sun???

if the genetic starting point .. the species ... which i thought the red one was ... grows in shade.. they will all tolerate shade ... its just when you start crossing genes in the seed pool ... and select for bigger flowers ... the logic would dictate.. they need more sun.. more energy production ...

and this is not specific to columbine.. and that is why i am taking the time to splain it lucy ...

the bigger the flower .... the more sun it will enjoy ...

ken

Here is a link that might be useful: link

    Bookmark     March 24, 2012 at 1:33PM
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terrene(5b MA)

Ken the state flower of Colorado is Aquilegia caerulea, Rocky Mountain columbine. My absolute favorite in the genus!

I am growing A. caerulea in mixed colors, the Origami mix, as well as McKana's Giants and A. canadensis, the eastern native. Most are doing well in mostly shade, but it's not heavy shade all day long. A few are in sunnier spots.

Weislaw, most Columbine does seem to be a short-lived perennial, but I've got 2 A. canadensis plants started from seed in 2008 and they are up and doing well this Spring, so they are in their 5th season.

    Bookmark     March 24, 2012 at 7:30PM
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ghoghunter

It's Night of the Living Coreopsis!!! Poor baby. I agree that you should move it!
Joann

    Bookmark     March 24, 2012 at 6:58PM
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MollyDog(6 PA)

Make sure it is watered well a few days before you transplant, if you choose to do so. I have many plants growing successfully under a river birch (with irrigation) for many, many years.

    Bookmark     March 24, 2012 at 7:04PM
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Steve Massachusetts Zone 5b

Very nicely done. The round bed in the front is the focal point. The Ninebark is a secondary point. I would grow a clem on a trellis on that wall, but grow two of them together. Plant a white like Huldine and a red/maroon like Warsaw Nike to play off the color of the Ninebark.

Steve

    Bookmark     March 24, 2012 at 8:06AM
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ken_adrian Adrian MI cold Z5

that darn dog always ends up in the picture.. whats it like.. to be a god.. to a canine.. lol ...

espalier???

or did someone already suggest that??

wonder if you could do such with strobus pendula??? or larix diana??? or decidua/kaempheri pendula???

ken

Here is a link that might be useful: link

    Bookmark     March 24, 2012 at 8:55AM
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Tiffany, purpleinopp GardenWeb, Z8b Opp, AL(8B AL)

Love the suntan analogy, Ken, very appropriate!

    Bookmark     March 23, 2012 at 10:18AM
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melaroma(6)

I have to agree with the soil amendment, I skipped that part when I was a newbie trying to save money and had to replant the whole bed. It will make you life so much easier later and your plants will grow really well.

As Ken said don't be afraid to try things, most of us change the plants around every now or then or even yank some out if they don't perform well. It's part of the fun of being a gardener!

    Bookmark     March 23, 2012 at 6:40PM
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tsugajunkie z5 SE WI

The canna bloom for me until frost knocks them down, so yes, they bloom late. Even more so if I'm ambitious enough to deadhead.

tj

    Bookmark     March 22, 2012 at 5:07PM
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ken_adrian Adrian MI cold Z5

what i used to do.. was cut the canna tops.. after frost.. and they browned.. and tie them together for halloween decoration.. like corn stalks..

to give you the timing aspect ...

ken

    Bookmark     March 22, 2012 at 5:21PM
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kimka(Zone 6B)

How about soapwort (either Saponaria officinalis or Saponaria ocymoldes) They start easily from seed and will form a mat to choke out weeds.

The other one that comes to mind is brunnera (the standard green)

KimKa

    Bookmark     March 22, 2012 at 4:07PM
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mad_gallica(zone 5 - eastern New York)

Why am I getting the idea we are being kept in the dark about something major? Like this hedge is in the desert, and the real question is what isn't going to require continual watering.

If that's the case, then may I suggest gravel.

It isn't something any sane person would use around here, because our biggest maintenance problem is weeds. So what has been discussed here is the problem establishing a dense enough groundcover that weeds can't compete. In an area where small rodents go around deliberately planting aggressive tree seeds, this is a difficult problem. In areas where few plants can grow without irrigation, it's much easier.

    Bookmark     March 22, 2012 at 4:34PM
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