Annuals forum: Impatiens Downy Mildew

Page 1 of 2 • 1 2
Views: 1557, Replies: 28 » Jump to the end
Name: Bob
Vernon N.J. (Zone 6a)
Charter ATP Member Plant Database Moderator I was one of the first 300 contributors to the plant database! Forum moderator Heucheras Echinacea
Hellebores The WITWIT Badge Dog Lover Lover of wildlife (Black bear badge) Region: New Jersey Celebrating Gardening: 2015
Image
NJBob
Mar 10, 2013 7:30 PM CST
In case you have not heard about this problem. I work at a garden center and growers informed us they might not supply them this year.
http://www.delawareonline.com/article/20130207/LIFE0402/3020...
Name: Tiffany
Opp, AL (Zone 8b)
Houseplants Organic Gardener Composter Region: Gulf Coast Miniature Gardening Native Plants and Wildflowers
Bulbs Foliage Fan Tropicals Butterflies Garden Sages Cactus and Succulents
Image
purpleinopp
Mar 18, 2013 10:10 AM CST
Yes, this is one of the true ornamental gardening tragedies of all time! Hopefully they will develop an immune or at least resistant I. walleriana soon. No other plant can really take its' place. New Guinea Impatiens are OK, but don't have the "wow" flowers.

There is also a strain of downy mildew that wrecks Coleus. Fortunately there are more alternatives to this one, but this is huge too. Not at the emergency level of Impatiens, but beware of any ill-looking and/or pruned plants while out shopping.
๐Ÿ‘€๐Ÿ˜๐Ÿ˜‚ - SMILE! -โ˜บ๐Ÿ˜Žโ˜ปโ˜ฎ๐Ÿ‘ŒโœŒโˆžโ˜ฏ๐Ÿฃ๐Ÿฆ๐Ÿ”๐Ÿ๐Ÿฏ๐Ÿพ
๐Ÿ€๐Ÿ‘’โ˜€๐Ÿ„๐Ÿ๐ŸŒฑ๐ŸŒฟ๐ŸŒด๐ŸŽ„๐Ÿ‘ฃ๐ŸŒต๐ŸŒทโš˜๐ŸŒน๐ŸŒป๐ŸŒฝ๐Ÿก๐Ÿƒ๐Ÿ‚๐ŸŒพ๐ŸŒฟ๐Ÿโฆโง ๐Ÿƒ๐Ÿ๐Ÿ‚๐ŸŒพ๐ŸŒป๐ŸŒบ๐ŸŒธ๐ŸŒผ๐ŸŒน๐ŸŒณ๐ŸŒฒ
โ˜•๐Ÿ‘“ The only way to succeed is to try.
Name: Vicki
North Carolina
Forum moderator Charter ATP Member I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! I sent a postcard to Randy! Region: United States of America
Purslane Garden Art Garden Ideas: Master Level Region: North Carolina Celebrating Gardening: 2015
Image
vic
Mar 18, 2013 10:23 AM CST
I'm just sick about this Crying

Many of my impatience died last summer and they were over 10 years old and grown from seed. I over winter them every year. I bought new seed and they are doing well but I did that before I had heard about this virus.

Name: Arlene
Grantville, GA (Zone 8a)
Greenhouse Region: Georgia Garden Sages Organic Gardener Beekeeper Vegetable Grower
Seed Starter Cut Flowers Composter Keeper of Poultry Keeps Goats Avid Green Pages Reviewer
Image
abhege
Mar 18, 2013 5:35 PM CST
Crying I hear you. It will probably be a few years before we get a resistant variety. I am going to be curious to see how many places will be selling impatiens this year...
Name: Tiffany
Opp, AL (Zone 8b)
Houseplants Organic Gardener Composter Region: Gulf Coast Miniature Gardening Native Plants and Wildflowers
Bulbs Foliage Fan Tropicals Butterflies Garden Sages Cactus and Succulents
Image
purpleinopp
Mar 20, 2013 8:03 AM CST
Most of the article is not available to non-paying viewers, so some things to know:
The spores are spread by wind, rain, plant to plant contact, splattering of water, humans, etc. There is no cure, so starting new plants from seed won't fix the problem. Overhead watering can help it spread. There is a ton of info out there if more reading material is desired. So very sad!!

Sunpatiens are supposedly resistant, but do need more sun like the new Guinea ones.
๐Ÿ‘€๐Ÿ˜๐Ÿ˜‚ - SMILE! -โ˜บ๐Ÿ˜Žโ˜ปโ˜ฎ๐Ÿ‘ŒโœŒโˆžโ˜ฏ๐Ÿฃ๐Ÿฆ๐Ÿ”๐Ÿ๐Ÿฏ๐Ÿพ
๐Ÿ€๐Ÿ‘’โ˜€๐Ÿ„๐Ÿ๐ŸŒฑ๐ŸŒฟ๐ŸŒด๐ŸŽ„๐Ÿ‘ฃ๐ŸŒต๐ŸŒทโš˜๐ŸŒน๐ŸŒป๐ŸŒฝ๐Ÿก๐Ÿƒ๐Ÿ‚๐ŸŒพ๐ŸŒฟ๐Ÿโฆโง ๐Ÿƒ๐Ÿ๐Ÿ‚๐ŸŒพ๐ŸŒป๐ŸŒบ๐ŸŒธ๐ŸŒผ๐ŸŒน๐ŸŒณ๐ŸŒฒ
โ˜•๐Ÿ‘“ The only way to succeed is to try.
Name: Karen
Cincinnati, Oh (Zone 6a)
Forum moderator I was one of the first 300 contributors to the plant database! Cut Flowers Winter Sowing Charter ATP Member Seed Starter
Echinacea Plant and/or Seed Trader Region: Ohio Region: United States of America Butterflies Hummingbirder
Image
kqcrna
Mar 24, 2013 5:19 AM CST
But the New Guineas are also resistant, right?

Karen
Name: Vicki
North Carolina
Forum moderator Charter ATP Member I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! I sent a postcard to Randy! Region: United States of America
Purslane Garden Art Garden Ideas: Master Level Region: North Carolina Celebrating Gardening: 2015
Image
vic
Mar 24, 2013 5:31 AM CST
From what I'm reading, yes. Thumbs up
Name: Karen
Cincinnati, Oh (Zone 6a)
Forum moderator I was one of the first 300 contributors to the plant database! Cut Flowers Winter Sowing Charter ATP Member Seed Starter
Echinacea Plant and/or Seed Trader Region: Ohio Region: United States of America Butterflies Hummingbirder
Image
kqcrna
Mar 24, 2013 6:44 AM CST
Thanks, Vic.

Karen
Name: Bob
Vernon N.J. (Zone 6a)
Charter ATP Member Plant Database Moderator I was one of the first 300 contributors to the plant database! Forum moderator Heucheras Echinacea
Hellebores The WITWIT Badge Dog Lover Lover of wildlife (Black bear badge) Region: New Jersey Celebrating Gardening: 2015
Image
NJBob
Mar 24, 2013 3:38 PM CST
http://www.anla.org/knowledgecenter/premium/index.cfm?view=p...
If you have the time , this is a more thorough description of the problem.
Name: Vicki
North Carolina
Forum moderator Charter ATP Member I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! I sent a postcard to Randy! Region: United States of America
Purslane Garden Art Garden Ideas: Master Level Region: North Carolina Celebrating Gardening: 2015
Image
vic
Mar 24, 2013 4:30 PM CST
Thank you Bob Thumbs up
Name: Karen
Cincinnati, Oh (Zone 6a)
Forum moderator I was one of the first 300 contributors to the plant database! Cut Flowers Winter Sowing Charter ATP Member Seed Starter
Echinacea Plant and/or Seed Trader Region: Ohio Region: United States of America Butterflies Hummingbirder
Image
kqcrna
Mar 24, 2013 5:43 PM CST
Thanks, Bob.

Karen
Name: Bob
Vernon N.J. (Zone 6a)
Charter ATP Member Plant Database Moderator I was one of the first 300 contributors to the plant database! Forum moderator Heucheras Echinacea
Hellebores The WITWIT Badge Dog Lover Lover of wildlife (Black bear badge) Region: New Jersey Celebrating Gardening: 2015
Image
NJBob
Mar 24, 2013 5:53 PM CST
I tip my hat to you.

Garden Ideas: Level 1
sewNsow
Mar 26, 2013 7:32 PM CST
I just returned from garden club meeting where my fav local greenhouse grower spoke.I asked him about the impatiens & he said he had not heard of anyone having it around here ,yet. He said no doubt it is coming but for the time being we can plant impatiens just realize they might get sick.I asked him about the disease in coleus & he said this has always been around.& he doesn't see any reason to forgo planting coleus at this time.Glad to hear this as I have a greenhouse full of beautiful coleus.
sewNsow
Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Region: Canadian Bulbs Winter Sowing Enjoys or suffers cold winters Lilies
Peonies Plant Lover: Loves 'em all! Garden Ideas: Master Level
Image
CarolineScott
Apr 10, 2013 10:36 AM CST
Oh dear! ---and I have impatiens seedlings under lights.
I hope that that disease does not like cold winters!
Name: Karen
Cincinnati, Oh (Zone 6a)
Forum moderator I was one of the first 300 contributors to the plant database! Cut Flowers Winter Sowing Charter ATP Member Seed Starter
Echinacea Plant and/or Seed Trader Region: Ohio Region: United States of America Butterflies Hummingbirder
Image
kqcrna
Apr 10, 2013 11:29 AM CST
Carolyn, I've read in several places that the disease can be killed in very cold northern winters, though I'm not sure how reliable that is. This says 5ยฐ is the magic number, but I question "for how long?"

"They are reliably killed when winter temperatures drop to below 5 degrees F. This seems to be a contributing factor in the rise of this plant pathogen here on island. We havenโ€™t had severe cold here in a few years. "

That's from here http://www.nantucketchronicle.com/nantucket-home-garden/2012...

Karen
Name: Arlene
Grantville, GA (Zone 8a)
Greenhouse Region: Georgia Garden Sages Organic Gardener Beekeeper Vegetable Grower
Seed Starter Cut Flowers Composter Keeper of Poultry Keeps Goats Avid Green Pages Reviewer
Image
abhege
Apr 10, 2013 5:50 PM CST
I have been putting mine outside so I'm thinking it may not be long before they bite the dust. Just hoping to get a little bit of pleasure from the blossoms. A few are already blossoming but they need to go in pots. I am going to spray with fungicide to try and prolong the plight.
Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Region: Canadian Bulbs Winter Sowing Enjoys or suffers cold winters Lilies
Peonies Plant Lover: Loves 'em all! Garden Ideas: Master Level
Image
CarolineScott
Apr 11, 2013 9:35 AM CST
So they may be okay here!
We shall see.
Name: Arlene
Grantville, GA (Zone 8a)
Greenhouse Region: Georgia Garden Sages Organic Gardener Beekeeper Vegetable Grower
Seed Starter Cut Flowers Composter Keeper of Poultry Keeps Goats Avid Green Pages Reviewer
Image
abhege
Apr 11, 2013 5:36 PM CST
Caroline, I sure hope they will be fine for you. I'm pretty sure my will end up dying.
(Zone 6a)
Image
Celene
Apr 24, 2013 8:28 AM CST
I may have a couple of I. wallerianas from time to time in the summer, but I have more I. balfourii, glandulifera, and sodenii that reseed. I have arguta and omeiana that are hardy here, and I try to winter over I. niamnaimensis, Are they likely to be affected, or spread it like Typhoid Mary? I'll be really sad if they die.

I have read here and there that growers use a pretty toxic fungicide to prevent the disease, I wonder if it works. I'd be unlikely to personally use it, but I know people who would.
Name: Joseph
Delaware USA (Zone 7a)

Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
May 6, 2013 10:24 AM CST
I wonder if foliar sprays of Actinovate will work for preventing Impatiens Downy Mildew.

Page 1 of 2 • 1 2

« Garden.org Homepage
« Back to the top
« Forums List
« Annuals forum
You must first create a username and login before you can reply to this thread.

Today's site banner is by nativeplantlover and is called "Bumble Veronica Pink"