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RE: Nematode free: Fact or Hoax?

  • Subject: RE: Nematode free: Fact or Hoax?
  • From: "Mary Chastain" <MC_hosta@Bellsouth.net>
  • Date: Fri, 19 Oct 2001 09:24:01 -0400
  • Importance: Normal

Pat I believe the nematode population is as great or maybe even more in the north. My reasoning is that where the growing season is so short the symptoms don't always have time to develop. If plants coming up in late Feb don't develop signs until late August ( I know this sounds like a long time compared to what we read but I have seen it happen ) that is 5 months. Some of the northern gardens don't have a season that long. I have had plants come here from northern gardens. The folks tell me they have no nematodes but I isolate the plants anyway. Sure enough over 90% show damage before fall and some of the others the next season. The folks that sent the plants think it is my imagination. Northern gardens do more plant exchange than the south. You are spreading sorrow with your joy. Isolating and cleaning up after infected plants is not easy so as far as I am concerned I would rather have fewer plants and less infection.
-----Original Message-----
From: owner-hosta-open@mallorn.com [mailto:owner-hosta-open@mallorn.com]On Behalf Of Pat Mora
Sent: Friday, October 19, 2001 7:50 AM
To: hosta-open@mallorn.com
Subject: Re: Nematode free: Fact or Hoax?

    I am curious if our winter "warming" trend of the past years has effected the nematode occurences? Are nematode's more prevalent in southern areas?
Pat Mora
----- Original Message -----
Sent: Friday, October 19, 2001 5:21 AM
Subject: Nematode free: Fact or Hoax?

Are these hosta truly nematode free or is the nematode population just too low to be detected. I hope the former but suspect the latter. Just as there is variation in insect population, weather, disease, etc from year to year, I'd think that nematode numbers vary yearly. Eradication of nematodes (the bad ones) surely would be utopia but is suppression closer to reality?
I would think that places where the ground freezes would be equivalent to leaving pots above ground.
Is the important factor the lowest temperature, length of time below freezing (or some other temp), how early in the year the temp drops, or some combination or an entirely different reason? Are there any scientists or plantsmen that know the answers?
----- Original Message -----
Sent: Thursday, October 18, 2001 6:11 PM
Subject: Re: Overwintering pots of hosta...

Hi All,
The pots in winter..in zone 4 I have buried in sand and wood chips.
At the time I did not know about the no water and let mother nature take care of them. Haven't lost any, but I really didn't have any valuable ones at that time.

I have found that leaving pots of hostas, that have nematodes, above ground with no mulch....if they survive, end up with no sings of nematodes the next year. I now have two plants I have done this to. Kim also had some plants that she left out over the winter...and they who survived are nematode free.
We might be on to something here. If you don't have a way to heat the plants..or the chemicals to rid them of this pest.
I like the chances of letting them freeze. I think the survival rate is about the same.
Anybody else find this to be true?

Where Embarrass, Mn hit 12 degrees.....

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