HomeMy WebLinkAbout20001987.tiff l OFFICE OF BOARD OF COUNTY COMMISSIONERS
PHONE (970) 356-4000, EVE .. 4200,41,,;(\ s„.., FAX: (970) 3 '-0242
P.O. BOX 753
GREELEY, COLORADO 806??
Ili C.
COLORADO
August 10, 2000
John S. Folsom
7050 Loma Linda Ct.
Longmont, CO 80504
Dear Mr. Folsom:
We are in receipt of you letter dated June 25, 2000, concerning the request to add tumble mustard
(Brassicaceae) to Weld County's noxious weed list.
Non-native plants which are deep rooted perennials such as whitetop (Cardaria draba), tal' whitetop
(Lepidium latifalia), and dalmatian toadflax (Linaria dalmatica) that are aggressive, competitive plants
should first be considered for the noxious weed list in Weld County. The plant that typically irfests first
cutting alfalfa, for which you are concerned, is flixweed (Descurainia sophia) not tumble mustard.
Tumble mustard (Sisymbrium altissimum) is an annual plant that is found in pastures, waste sites and
roadsides in Weld County. It is an annual plant, easy to manage, and not particularly cornpettIve.
Typically, this type of plant is not considered a noxious weed.
Both flixweed and tumble mustard are annual plants;therefore, neither one is recommended to be included
on Weld County's noxious weed list.
Sincerely,
BOARD OF COUNTY COMMISSIONERS
•
�Cc4.tals;
Barbara J. Kirkmeyer, Chair
cc: Frank B. Hempen, Jr., Director of Public Works/County Engineer
Ron Broda, Vegetation Management Specialist
4
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CORRESPONDENCE RESPONSE
LDEPARTMENT OF if.Ct.L.H".c,:
!--
* * * PLEASE RESPOND WITHIN THREE DAYS.* **
IF RESPONSE WILL BE DELAYED,
PLEASE NOTIFY "CTB GROUP" BY E-MAIL
OF EXPECTED DATE FOR RESPONSE.
RECOMMENDED ACTION:
CTION:
Narrative:
METHOD OF RESPONSE:
Board Action
Work Session
Letter (Attached)
Telephone Call
_ No Response (explain)
Department Hea SignatLre
GB DH GV BK MG
BOARD ACTION: (Initial by Approval)
,
Agree with Recommendation �! R/ /
Worksession
C 2OL Harding Tweed control Page 1
From: jmfolsom <jmfolsom@ecentral.com>
To: <charding@co.weld.co.us>
Date: 6/25/00 10:20AM
Subject: weed control
7050 Loma Linda Ct.
Longmont CO 80504
303 833 2992
June 25, 2000
Weld Board of County Commissioners
The north half of section 18, T2N, R67W, 6th PM is heavily infested with
a weed identified as Tumbling Mustard [Brassicaceae]. This weed is
occurring in other areas commonly infesting alfalfa fields at the first
cutting.
Since this weed is not included in the County*s designated list of
noxious weeds, I am advised that Weed & Pest Division staff cannot
demand control of this weed on private property. I, therefor, would
like to bring to your attention reasons why this weed should be added to
the Countys list of designated noxious weeds so that it might be
controlled.
[1] Tumbling Mustard is defined by the statutes as being a noxious
plant in that it is alien to Colorado [see description enclosed and CRS
35-5.5-103 [2] and [16].
[2] It should be designated a noxious weed since{35-5.5-102 [16][a]}
it aggressively invades or is detrimental to crops or native plant
communities. [d] it is detrimental to the environmentally sound
management of natural and agricultural ecosystems and, when dry and
concentrated by tumbling in the Autumn, constitutes a fire hazard.
I request that this noxious weed be added to the designated list in The
Undesirable Plant Management Plan [Ordinance 169A] under the powers
given to the County under CRS 35-5.5-105 and 108[3].
Very truly yours,
John S. Folsom
PC: Undesirable Plant Management Advisory Commission, Ron Broda
7050 Loma Linda Ct.
Longmont CO 80504
• 303 833 2.992
June 25, 2000
Weld Board of County Commissioners, , -
The north half of section 18, T2N, R67W, 6th PM is heavily infested with a weed
identified as Tumbling Mustard [Brassicaceae]. This weed is occurring in other areas
commonly infesting alfalfa fields at the first cutting.
Since this weed is not included in the County's designated list of noxious weeds, 1 am
advised that Weed & Pest Division staff cannot demand control of this weed on private
property. I, therefor, would like to bring to your attention reasons why this weed should
be added to the County's list of designated noxious weeds so that it might be controlled
[1] 'Tumbling Mustard is defined by the statutes as being a noxious plant in that it is alien
to Colorado [see description enclosed and CRS 35-5.5-103 [2] and [16].
[2] It should be designated a noxious weed since {35-5.5-102 [16][a]) it aggressively
invades or is detrimental to crops or native plant communities. [d] it is detrimental to the
environmentally sound management of natural and agricultural ecosystems and, when dry
and concentrated by tumbling in the Autumn, constitutes a fire hazard.
I request that this noxious weed be added to the designated list in The Undesirable Plant
Management Plan [Ordinance 169A1 under the powers given to the County under ('.RS
35-5.5-105 and 108[3].
Very truly yours,
. John S Folsom
PC: Undesirable Plant Management Advisory Commission, Ron Broda
•
Sisymbrium altissimum L.
Common Name: Tumble mustard (tumbling mus-
tard,tall mustard,Jim Hill mustard)
Growth Form: Forb
Life Span: Annual (or winter annual)
Origin: Europe)
Ffiwering Dates: May-August
Reproduction Seeds
Height 0.5-1.5 m (1.6-4.9 ft)
Inflorescence: Raceme,terminating branches,
numerous
Flower. Pale yellow to yellowish-white corolla(9-14
mm in diameter),drying cream-colored;petals 4,
spatulate(6-10 mm long);sepals 4,awl-shaped
and tapering(3.5-5 mm long),margins membra-
nous
Fruit Silique,linear(5-15 cm long),straight,
spreading,pubescent,several-seeded;pedicel stout
(4-10 mm long),as thick as or nearly as thick as
the silique
Seed: Oblong or angular(1-1.5 mm long),yellow to
brown,with a single groove
Leaves: Alternate;lower blades oblanceolate to spat-
ulate(4-23 cm long, 1-4 cm wide),upper leaves
smaller,pinnately lobed or divided nearly to the
midrib,margins coarsely toothed,surfaces pubes-
cent,pale green
Stems: Erect,simple below,much-branched above,
pubescent
Underground: Taproot
Where Found: Throughout Nebraska,especially
abundant in western Nebraska,and it is not com-
mon in the extreme eastern portion of the state.
Tumble mustard grows in smallgrain fields,range-
land,gardens,roadsides,and waste places.
Uses and Values: Tumble mustard seeds are eaten by
ground-foraging birds.
Poisoning: Tumble mustard may accumulate toxic
levels of nitrates,but livestock seldom eat enough
of the foliage to become poisoned. Basal leaves are pinnately lobed while upper
Historical: Tumble mustard is believed to have leaves are linear-filiform entire segments.
spread into the west by way of the railroads. It is
sometimes called Jim Hill mustard because Jim
Hill was an early railroad baron.
Other Tumble mustard often breaks off at the soil
level when mature and scatters seed as it is tum-
bled by the wind. It has become a troublesom)
(weed in many areas.)"
219
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