[APWG] Fw: Mystery Shrub

Sat Apr 15 05:56:52 CDT 2006

Here is one more possibility besides Spirea prunifolia.
Any advice on this ? Thanks. Marc
-----Original Message-----
I believe this is spirea thunbergii. It blooms very early in spring, ours
are in bloom now.

Jeff Thompson
General Manager
Eaton Farms
Pennsylvania Pride Brand Trees & Shrubs
455 White Oak Lane
Leesport, PA 19533
jeff at eatonfarms.com
Phone: 1-800-960-9974
Fax: 610-926-0789
-----Original Message-----

Marc, It is in fact a Spirea. Seedlings may not have as tight of floral
arrangement as those originally grown from selection and asexual
propagation.

--
Susan Wright
Shady Grove Gardens
shady-grove-gardens.com
828-297-4098
sggarden at skybest.com

----- Original Message -----
From: "Billy Thompson" <BLTHOMPSON at brgov.com>
To: "Marc Imlay" <ialm at erols.com>
Sent: Monday, April 10, 2006 9:27 AM
Subject: RE: [APWG] Mystery Shrub

This looks like one of the older versions of bridal wreath speria

----- Original Message -----
From: "Gary Schwetz" <gschwetz at dehort.org>
To: "Marc Imlay" <ialm at erols.com>; <ma-eppc-brd at yahoogroups.com>;
<nativeplantseast at yahoogroups.com>; <WorthleyBotany at yahoogroups.com>;
<apwg at lists.plantconservation.org>
Sent: Monday, April 10, 2006 1:24 PM
Subject: RE: [APWG] Mystery Shrub

Looks like a double-flowering version of the flowering almond, Prunus
glandulosa, an introduced ornamental that Michael Dirr describes as the
bargin basement shrub.

gary
Cultivating a Greener Community
www.dehort.org
302-658-6262x31

Karyn,

Sounds like a class 3 invasive, worth removing but not highly invasive.
However, Spiraea japonica is an emerging serious invasive in Garrett
County.

Marc

----- Original Message -----
This looks like Spiraea prunifolia 'Plena', the
double-flowered form of a Chinese native and
introduced to the west by Siebold in 1845. The
single-flowered form is very rarely grown, and
'Plena' does not set seed so only reproduces
vegetatively... hence just one large clump at the
old homestead.

Graham Rice
Milford, PA

----- Original Message -----
It is Bridal Wreath Spirea:

http://www.ces.ncsu.edu/depts/hort/consumer/fourh/images/Spiraea6.htm

Mona Miller
Herndon, VA (USA)
A kind word is water to a thirsty soul--}i{

----- Original Message -----
From: Bergmann, Carole
To: ma-eppc-brd at yahoogroups.com ; ma-eppc-brd at yahoogroups.com ;
nativeplantseast at yahoogroups.com ; WorthleyBotany at yahoogroups.com ;
apwg at lists.plantconservation.org
Sent: Sunday, April 09, 2006 9:08 AM
Subject: RE: [ma-eppc-brd] Mystery Shrub

That is Bridal Wreath Spirea, Spirea prunifolia...A plant from my
childhood...
Carole
http://www.hort.net/gallery/view/ros/spipr/
http://www.cas.vanderbilt.edu/bioimages/species/sppr.htm
----- Original Message -----
Almost certainly

Bridlewreath Spirea, Spiraea prunifolium

Photo at
http://ispb.univ-lyon1.fr/cours/botanique/photos_dicoty/dico%20Q%20a%20Z/Spi
rea%20prunifolia.jpg

Larry Hurley
Title: Battling Botanical Bullies in Bear Pen Wildland, Garrett County
Leader/s: Ron Boyer & Liz McDowell
Date: April 21 and June 16, 2006
Time: 9 am to 12 noon

Exotic Removal Workday description:
Volunteers are needed to continue control efforts of Japanese spiraea in the
Bear Pen Run area of Savage River State Forest.  Bear Pen is designated as a
Type 1 Wildland and like other natural areas around the state, it is
threatened by a variety of exotic invasive species.  In 2005, Ed Thompson,
Maryland Heritage & Wildlife Service ecologist, identified the removal of
Spiraea japonica from Bear Pen as a high priority project.  We'll be working
on Friday April 21st  and Friday June 16th from 9 to 12 to continue our
efforts to reduce the infestation using both mechanical and chemical control
methods.  Kerrie Kyde, Invasive Plant Specialist with the Maryland Wildlife
& Heritage Service, is providing technical support.  Mike Gregory, New
Germany State Park manager, is providing free camping the night before for
any out-of-town volunteers.  Ron Boyer and Liz McDowell, Elk Ridge
NatureWorks, are coordinating the project and providing snacks and drinks
for volunteers.  For more details or to register, contact Ron at
301-895-3686 or info at elkridgenatureworks.com.  "Sharing unique nature
experiences in every season"

http://www.nps.gov/plants/alien/ lists
Spiraea prunifolia bridal wreath spirea AL,TN    Reichard, Sarah. 1994.
Assessing the potential of invasiveness in woody plants introduced in North
America. University of Washington Ph.D. dissertation.  Faith Campbell, 1998.
Plants that Hog the Garden: Invasive Plants in the United States. Fine
Gardening Online (http://www.tauton.com/fg/features/plants/invasive).

Spiraea japonica Japanese spirea KY, MD, NC, NJ, PA, TN, VA
Spiraea japonica L. f.
Rose family (Rosaceae)

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 NATIVE RANGE: Japan, Korea and China

DESCRIPTION: Japanese spiraea, also called Japanese meadowsweet, is a
perennial, deciduous shrub that grows to 4 or sometimes 6 feet in height and
about the same in width. It has slender erect stems that are brown to
reddish-brown, round in cross-section and sometimes hairy. The leaves are
generally egg-shaped, 1-3 inches long, have toothed margins and alternate
along the stem. Clusters of attractive, rosy-pink flowers are borne at the
tips of branches. Seeds, measuring about 1/10 inch in length, are contained
in small lustrous capsules. Japanese spiraea is naturally variable in form
and there are many varieties of it in the horticultural trade.

ECOLOGICAL THREAT: Japanese spiraea can rapidly take over disturbed areas.
Growing populations  creep into meadows, forest openings, and other sites.
Once established, spiraea grows rapidly and forms dense stands that
outcompete much of the existing native herbs and shrubs. Seeds of Japanese
spiraea last for many years in the soil, making its control and the
restoration of native vegetation especially difficult.

DISTRIBUTION IN THE UNITED STATES:  Japanese spiraea is now naturalized
throughout much of the Northeast, Southeast and Midwest.

HABITAT IN THE UNITED STATES: Japanese spiraea is adapted to disturbed
areas, tolerates a wide range of soil conditions and grows in full sun to
partial shade. It is commonly found growing along streams and rivers, forest
edges, roadsides, and in successional fields and power line right-of-ways.

BACKGROUND: Japanese spiraea was introduced into the United States as an
ornamental landscape plant and first cultivated in the northeastern states
around 1870.

BIOLOGY & SPREAD: A single Japanese spiraea plant produces hundreds of small
seeds that are naturally dispersed by water and deposited along stream
banks. Seeds may also be carried in fill dirt and establish new populations
in the highly disturbed soil of construction sites.

MANAGEMENT OPTIONS: Cutting or mowing Japanese spiraea shrubs may be
effective for small, initial populations or for environmentally sensitive
areas where herbicides cannot be used.  Repeated mowing or cutting will
control the spread of spiraea, but will probably not eradicate it.

Spiraea resprouts after cutting, making repeated cutting necessary to
exhaust the plants energy reserves. Stems should be cut at least once per
growing season, prior to seed production, and cut as close to ground level
as possible.

Chemical: Foliar herbicide applications should be considered for large
thickets of Japanese spiraea where the risk to non-target plants is
determined to be minimal. Applications may be made almost any time of year,
as long as the air temperature is above 65ºF, to ensure absorption of the
chemical by the plant. Apply a 2% solution of glyphosate (e.g., Roundup or
Rodeo) or triclopyr (Garlon) and water plus a 0.5% non-ionic surfactant to
thoroughly wet all leaves.  Use low pressure and a coarse spray pattern to
reduce spray-drift to non-target species. NOTE: Glyphosate is a
non-selective systemic herbicide that may kill even partially sprayed
plants. Triclopyr is a selective for broadleaf species.  In areas where
desirable grasses are growing under or around spiraea, triclopyr can be used
without damage to the grasses.

USE PESTICIDES WISELY: ALWAYS READ THE ENTIRE PESTICIDE LABEL CAREFULLY,
FOLLOW ALL MIXING AND APPLICATION INSTRUCTIONS AND WEAR ALL RECOMMENDED
PERSONAL PROTECTIVE GEAR AND CLOTHING. CONTACT YOUR STATE DEPARTMENT OF
AGRICULTURE FOR ANY ADDITIONAL PESTICIDE USE REQUIREMENTS, RESTRICTIONS OR
RECOMMENDATIONS.

NOTICE: MENTION OF PESTICIDE PRODUCTS ON THIS WEB SITE DOES NOT CONSTITUTE
ENDORSEMENT OF ANY MATERIAL.

For more information on the management of Japanese spiraea, please contact:

Kris Johnson, Great Smoky Mountains National Park, Gatlinburg, TN
SUGGESTED ALTERNATIVE PLANTS: Some suitable native alternatives for Japanese
spiraea include  shrubs like sweetfern (Comptonia peregrina), arrowwood
(Viburnum dentatum), Summersweet clethra (Clethra alnifolia),Virginia
sweetspire (Itea virginica), silky dogwood (Cornus amomum), inkberry (Ilex
glabra), pinxterbloom azalea (Rhododendron periclymenoides), and sweetbay
magnolia (Magnolia virginica). You may wish to contact the native plant
society in your state for more assistance.

----------------------------------------------------------------------------
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AUTHOR:

 Tom Remaley, Great Smoky Mountains National Park, Gatlinburg, TN.

EDITOR:

Jil M. Swearingen, National Park Service, Washington, DC.

REFERENCES:

Carter, J. 1993.  Spiraea. The Iowa Review 23(1):57-61.

Chamberlain, S. 1983.  Hedges, screens and espaliers - how to select, grow
and enjoy. Tucson, AZ:  HP Books, 163.

Dirr, M.A. 1986.  Spiraeas of the japonica group are summer garden
aristocrats. American Nurseryman 163:54-56.

Dirr, M.A.  1990. Manual of woody landscape plants: their identification,
ornamental characteristics, culture, propagation and uses. Stipes Publishing
Co. Pp. 803-805.

Gleason, H.A., A. Cronquist. 1991.  Manual of vascular plants of
northeastern United States and adjacent Canada. 2nd ed. The New York
Botanical Garden, 910 .

Gorbunov, V.D., V.I. Sheichenko, A.I. Ban'kovskii. 1976.  A new alkaloid
from Spiraea japonica. Chemical Natural Compound 12(1):119-120.

Komazaki, S. 1983.  Overwintering of the spiraea aphid, Aphis citricola Van
der Goot (Homoptera: Aphididae) on citrus and spiraea plants. Applied
Entomology Zoology 18(3): 301-307.

Marczynski, S., L.S. Jankiewicz. 1978.  The effect of controlled temperature
and humidity on the effectiveness of chemical defoliation of Ligustrum
vulgare L. and Spiraea bumalda Burv. Shrubs. Acta Agrobotany 31(½):181-193.

Marczynski, S. 1977.  The chemical defoliation to aid transplantation of
Ligustrum vulgare L. and Spiraea X arguta Zab. Shrubs in nursery. Acta
Agrobotany 30(1):103-119.

Ogle, D.W. 1991.  Spiraea virginiana Britton: I. Delineation and
distribution. Castanea 56(4):287-296.

Ogle, D.W. 1991.  Spiraea virginiana Britton: II. Ecology and species
biology. Castanea 56(4):297-303.

Radford, A.E., H.E. Ahles, C.R. Bell. 1968.  Manual of vascular flora of the
Carolinas. Chapel Hill, NC: The University of North Carolina Press, 1183.

Rehder, A. 1986.  Manual of cultivated trees and shrubs. Portland, OR:
Dioscorides Press, 996.

Swanson, R.E. 1994.  A field guide to the trees and shrubs of the southern
Appalachians. Baltimore, MD: John Hopkins University Press, 399.

Wiesner, M.B. 1994.  Virginia spiraea. American Horticulturist 73 (August
1994): 9.

Williamson, M.A.; Bernard, E.C. 1988.  Life cycle of a new species of
Blumeriella (Ascomycotina: Dermateaceae), a leaf-spot pathogen of Spiraea.
Canadian Journal of Botany 66(10): 2048-2054.

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Plant Conservation Alliance, Alien Plant Working Group.

----- Original Message -----
From: "Karyn Molines" <kmolines at chesapeake.net>
To: "Sara Tangren" <SATangren at chesapeakenatives.com>; "Marc Imlay"
<ialm at erols.com>; "Joe Metzger" <jmetzger50 at hotmail.com>
Sent: Monday, April 03, 2006 2:48 PM
Subject: Mystery Shrub

Subject: Mystery Shrub

I'm trying to find out the identification of this shrub--there is a
large patch of this at the Glendening Preserve at Jug Bay, near to an
old homestead.
I have one in my own front yard and I call it bridal wreath, but it
doesn't look like the shrub of that name in my google image search.
Thanks for helping id it.

 Karyn Molines
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