Perennial Garden 
Highlights: June - 
July - August 
Late June Oenothera missourensis (Evening Primrose) 
Oenothera tetragona ‘Fireworks’ 
(Sundrops) 
Achillea taygetea ‘Moonshine’ (Yarrow) 
Ornamental grass garden 
Early to Asclepias tuberosa (Butterfly Weed) 
Mid-July Phlox paniculata ‘Star Fire’ and ‘Everest’ 
(Phlox) 
Astilbe chinensis ‘Pumila’ 
Cut flower garden annuals 
Mid-to Rudbeckia fulgida var. sullivantii 
Late July ‘ Goldsturm ' (Black-eyed Susan) 
Echinacea purpurea ‘Bright Star’ 
(Coneflower) 
Liatrus spicata (Blazing Star) 
Limonium ‘Robert Butler’ (Sea Lavender) 
Early to Lobelia cardinalis (Cardinal Flower) 
Mid- Lobelia siphilitica (Blue Cardinal Flower) 
August Chrysanthemum parthenium (Feverfew) 
Platy codon grandiflorus ‘Album’ 
(Balloon Flower) 
Herb garden 
Mid-to Kirengeshoma palmata 
Late Hosta plantaginea var. grandiflora 
August Phlox paniculata ' Fujiyama’ 
... and many more ... 
For weekly listings, see the “Dutchess 
Living” section of the Taconic Newspapers. 
Library Note 
The IES Circulating Collection, formerly 
housed at the Gifford House, has been 
moved to the Scientific Library in the 
Plant Science Building. Arboretum 
Members who wish to borrow books from 
this collection may do so while the 
Librarian, Annette Frank, is on duty. 
Members are invited to call Mrs. Frank at 
(914) 677-5343 ext. 311 to make 
arrangements for a short introduction to 
the new policies regarding use of the 
Circulating Collection. 
Books on reserve for IES adult education 
courses are still kept at the Gifford House. 
Call Marcia Davis at (914) 677-5358 for 
information. 
Summer Calendar 
COURSES, WORKSHOPS AND 
ECOLOGICAL EXCURSIONS 
Adult Education Program catalogues with listings 
for the fall semester will be mailed to Arboretum 
Members by mid-July. Copies will also be available 
at the Gifford House Visitor and Education Center, 
or by mail if you call the number below. 
SUNDAY ECOLOGY PROGRAMS 
Free public programs are offered on the first and 
third Sunday of each month. All programs are from 
one to two hours long, and begin at 2:00 p.m. at the 
Gifford House on Route 44A unless otherwise noted. 
Tentative schedule (please call (914) 677-5358 to 
confirm the day's topic): 
July 3: Independence Day Weekend - no program 
July 17: Seeing the Trees for the Forest: A 
Beginner’s Introduction to Tree Identification 
(Alan Berkowitz) - Walk 
Aug. 7 Air Pollution and the Forest: Field Work on 
High (Gary Lovett) - Walk 
Aug. 21: Pond Ecology: Plants and Animals in a 
Freshwater Soup (Michael Pace) - Walk 
Sep. 4: Labor Day Weekend - no program 
For ecology walks, wear long pants and sturdy, 
waterproof footwear with socks; long-sleeved shirts 
or jackets are also recommended. In case of 
inclement weather, call (914) 677-5358 after 1 p.m. 
to learn the status of the day’s program. 
ECOLOGICAL RESEARCH 
DISPLAYS 
Demonstrations at the Arboretum introduce visitors 
to the methods and results of ecological research. 
The Acid Rain Study Ponds display behind the 
Gifford House Visitor and Education Center is open 
from early May through October. Here, a series of 
tanks that serve as model ponds (complete with 
aquatic animals and plants) are exposed to simulated 
acid rain, and the results recorded twice a week. The 
Pollution Garden, comparing some visible effects of 
atmospheric ozone on ozone-sensitive and ozone- 
tolerant flowering and crop plants, is adjacent to the 
study ponds. The Meadow Management display, at 
the Plant Science Building, contrasts the 
effectiveness of mowing vs. burning in maintaining 
an attractive little bluestem meadow. 
ART EXHIBIT 
“The Life Forms of Leonard Cole” is an exhibit of 
oil paintings and charcoal sketches by Leonard Cole, 
father of IES aquatic ecologist Dr. Jonathan Cole. 
The exhibit is at the Plant Science Building and is 
open to the public from 9 a.m. to 4 p.m. weekdays 
through August 12th. 
GREENHOUSE 
The IES Greenhouse performs double duty: it is a 
year-round tropical-plant paradise as well as a site 
for controlled environmental research. The public is 
invited to explore both aspects during Arboretum 
hours. There is no admission fee, but visitors should 
first stop at the Gifford House for a free permit. 
ARBORETUM HOURS 
May 1 - September 30: Monday through 
Saturday, 9 a.m. to 6 p.m.; Sunday 1 p.m. to 6 p.m. 
The Gift and Plant Shops are open Tuesday through 
Saturday 11 a.m. to 5 p.m. and Sunday 1 - 5 p.m. 
(The Greenhouse and Plant Science Building 
continue to be closed to visitors at 4 p.m. during the 
summer hours.) 
October 1 - April 30: Monday through Saturday, 
9 a.m. to 4 p.m.; Sunday 1 - 4 p.m. The Gift and 
Plant Shops are open Tuesday through Saturday 11 
a.m. to 4 p.m. and Sunday 1 - 4 p.m. Arboretum 
closed on public holidays. (Also closed during the 
deer hunting season and when roads are snow- 
covered.) 
All visitors must obtain a free permit at the Gifford 
House for access to the Arboretum. Permits are 
available up to one hour before closing time. 
MEMBERSHIP 
Become a member of the Mary Flagler Cary 
Arboretum. Benefits include a special member’s rate 
for IES courses and excursions, a 10% discount on 
purchases from the Gift Shop, six issues of the IES 
Newsletter each year, free subscription to Garden 
(the beautifully illustrated magazine for the 
enterprising and inquisitive gardener), and parking 
privileges and free admission to the Enid A. Haupt 
Conservatory at The New York Botanical Garden in 
the Bronx. Individual membership is $25; family 
membership is $35. For information on 
memberships, contact Janice Claiborne at 
(914) 677-5343. 
For more information, call (914) 677-5358 weekdays from 8:30 - 4:30 
INSTITUTE OF 
ECOSYSTEM STUDIES 
The New York Botanical Garden 
Mary Flagler Carv Arboretum 
Box AB, Millbrook, New York 12545 
Newsletter 
Volume 5, Number 3 
May - June 1988 
Nonprofit Org. 
U.S. Postage 
PAID 
Millbrook, N.Y. 
Permit No. 16 
100% Recycled 
Paper 
