hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: Very small insects in hosta crown

  • Subject: Re: Very small insects in hosta crown
  • From: Marie <hostas@gmx.at>
  • Date: Sat, 20 Jul 2002 15:39:50 +0200 (MEST)

> I have been digging a few hostas that weren't growing as I think they
> should
> and I've found a very small insect (about the size of the spider mite that
> gets on Alberta spruce) inside the crown. In each case the part of the
> crown
> the insects were in showed decay while other parts of the crown were fine.
> The leaves from the part of the crown that showed no decay were stunted
> and
> I'm sure it's from the damage done by these insects.
> This is a new one for me. I feel sure there are several pesticides that
> would control this insect.  I would like to know what it is I'm trying to
> control so I can best select the pesticide and method of application.
> These insects are small. I mean small.
> Any seen these critters before?
> Dan & Lu
counted the legs? If there are 8, itīs some form of mite and therefor no
insect. That means you can`t kill them with insecticides but only with special
acaricides. Since they are so small and always hide, itīs quite difficult
getting at them. The deformation of the leaves (crippling) is caused by the mite`s
saliva which is toxic to the tissue and causes named symptoms. They can`t
travel from one plant to the next by themselves (unless two plants are actually
touching each other). Their means of transport are larger insects (eg
whitefly) or wind. Have a look at the critters with a magnifying lens to find out
what they are.


GMX - Die Kommunikationsplattform im Internet.

To sign-off this list, send email to majordomo@hort.net with the

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index