Thanks for all of the info, Bill.
I think I will try boiling water on the soil, heating the roots and
potting it up for observation, and I'll surely keep my fingers crossed
that the surrounding plants don't get infected.
I just sent an email to the nursery in question, and have to say I am
mortified that I didn't have any better sense than to post only that I'd
got it at First Look, which will most likely be of concern to all of the
vendors there. I'd misplaced my receipt, so didn't know, at the time, just
who I'd gotten it from.
I think that the only way that I could make amends, is to offer to field
email from people wanting to order plants from any of the vendors, so that
I could tell them mano a mano (or, gee, well, womano a mano. heh) whether
the specific vendor they want to order from, is safe, if they have any
"Hey, Alttara, I want to order plants from Naylor Creek. did you happen
to get Kinkaku from them? Love, John."
"Nope, John, order with no worries!"
Assuming the nursery in question is licensed to use the aforementioned
chemicals, and them being aware of the situation, it shouldn't be a problem
for long, right?
Bill Meyer wrote:
Yes, it's that time of year again when the nematodes become obvious and
everyone starts squirming about what to say and who to say it to. For everyone
who is new here, foliar nematodes leave brown stripes on hosta leaves that
are clearly bordered by the veins. They are a serious pest that can spread
at least five feet in any direction in the garden in one year. They greatly
slow the growth of infested plants and may even kill them in a few years.
When the leaves are wet they come out into the water on top of the leaf
and can move from plant to plant either that way or through the soil. Moving
through wet leaves in a garden which has them can make the problem much
So what can we do? The laws vary from state to state on what chemicals
can be applied and where they can be applied. I would first suggest checking
with your state to see what controls are legal there. The control measures
showing the greatest effect on them are as follows in descending order
1. Nemacur--This is a chemical that is highly restricted in most states
(to turf and agricultural use only) which gives near-total control of nematodes.
If you are permitted to have someone with an applicators license use it
on your property, this is the best solution.
2. Vydate or Oxymyl----These are the same chemical in liquid and solid
form. These are showing very good control, second only to Nemacur. These
too are restricted, but not as tightly as Nemacur.
3. Heat--- heating the plants can totally destroy the nematodes in that
plant. If you are not careful, it can destroy the plant too. The soil where
the infested plant was should also be treated with boiling water.
4. ZeroTol--- Just mentioned in the last Journal, and unrestricted, it
appears to give approximately 80% control. This is better than nothing,
but still leaves them in the garden.
If your state will not permit use of the first two chemicals, maybe the
best bet would be a combination of the third and fourth methods. Plants
can be potted if they are worth saving and placed in a car on a hot day.
While this may destroy the foliage, it usually won't kill the plant. Careful
heating in water, monitoring the temperature and time, should work better.
This combined with ZeroTol may work very well.
By all means, please contact the nursery that sold it to you and tell them
about their plant. They may not know they have a problem.
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Doing a daily survey of my gardens (which I haven't had a chance to
do in several days), I saw a sight that chilled my veins, despite the 90+
degree outside temperature.
I've seen pictures, I've heard talk, but now, I get my first "in the
flesh" peek: H. Montana Kinkaku has nematodes. Unmistakably.
I summarily dug it up, and ran to my hosta reference library. It is
currently soaking, isolated, in a bucket. (Now I'm wondering what to do
with the water in that bucket, once I decide what to do with the plant.)
Can anybody tell me if they've had much success with the hot water treatment,
or should I just throw the poor, afflicted, yet beautiful thing away?
I also hesitate, oh, yes, verily I hesitate, to say that this hosta
was purchased from one of the vendors at First Look.