[IBC] Elm Taxonomy

IrisCohen@AOL.COM

Ulmus anglica Druce, 1932, British Isles, English elm.
Ulmus campestris is a synonym of U. minor.
Ulmus carpinifolia is a synonym of U. minor.
Ulmus xelegantissima Horwood, 1933, U. minor x plotii, parts of England.
Ulmus glabra Hudson, England, 1762, wych elm.
Ulmus xhollandica Miller, 1754-1768, U. minor x glabra, Europe, Dutch elm.
Ulmus minor Miller, 1768, field elm, Eurasia, North Africa.
Ulmus plotii Druce, 1911, England, Plot's elm.
Ulmus procera is a synonym of U. minor.
'Jacqueline Hillier' is sold in this country as U. xelegantissima. The garden
where it was found is within the range of U. plotii. However, due to
taxonomic difficulties, the RHS places 'J. H.' within U. xhollandica.
Regarding pests: Those of you who raise Chinese elm have probably encountered
leaf gall mites. I have to spray for them occasionally. A grower in Holland
who has what appears to be Ulmus xhollandica photographed infestation with leaf
gall mites, so I would watch 'Jacqueline Hillier' for them. Orthenex is good
for both leaf gall mites & spider mites.
Iris

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Craig Cowing

IrisCohen@AOL.COM wrote:

> <snip>
> 'Jacqueline Hillier' is sold in this country as U. xelegantissima. The garden
> where it was found is within the range of U. plotii. However, due to
> taxonomic difficulties, the RHS places 'J. H.' within U. xhollandica.
> <snip>
> Iris

To which zone is 'Jaqueline Hillier' hardy?

Craig Cowing
NY
Zone 5b/6a Sunset 37
Oct. 16, 11 AM. Be there!!

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John Dhom

Hey Craig,

Brent has it listed as follows...

Ulmus x hollandica 'Jacqueline Hillier' (formerly listed as Ulmus x
elegantissima) S\M\-20ø\RG\Ls\B

Decoder ring found at http://www.evergreengardenworks.com/viewcat.htm. Oh
I'll just paste it here...

Culture Codes:
S=sun
PS=part sun
Sh=shade
M=moist or regular garden watering
D=dry or little summer water
W=wet or bog conditions
DegøF=minimum low temperature
RG=rock garden plant
Ls=landscape plant
B=bonsai plant.

Best,
/jhd

"Craig Cowing" <ccowing@FRONTIERNET.NET> wrote in message
news:40E41658.4EBCFCEA@frontiernet.net...
> IrisCohen@AOL.COM wrote:
>
> > <snip>
> > 'Jacqueline Hillier' is sold in this country as U. xelegantissima. The
garden
> > where it was found is within the range of U. plotii. However, due to
> > taxonomic difficulties, the RHS places 'J. H.' within U. xhollandica.
> > <snip>
> > Iris
>
> To which zone is 'Jaqueline Hillier' hardy?
>
> Craig Cowing
> NY
> Zone 5b/6a Sunset 37
> Oct. 16, 11 AM. Be there!!
>
>
************************************************** **************************
****
> ++++Sponsored, in part, by John Quinn++++
>
************************************************** **************************
****
> >>-->> The IBC HOME PAGE & FAQ: http://www.internetbonsaiclub.org/ <<--<<
> +++++ Questions? Help? e-mail BONSAI-REQUEST@HOME.EASE.LSOFT.COM +++++

IrisCohen@AOL.COM

In a message dated 7/1/04 9:30:31 AM, ccowing@frontiernet.net writes:
> To which zone is 'Jacqueline Hillier' hardy?
>
It is considered hardy in Zone 5, but if I had it in the ground outdoors, I
would use a rose cone. The branches are very brittle.
Iris

************************************************** ******************************
++++Sponsored, in part, by John Quinn++++
************************************************** ******************************
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+++++ Questions? Help? e-mail BONSAI-REQUEST@HOME.EASE.LSOFT.COM +++++