128 
THE NATIONAL NURSERYMAN 
lliat in regions where conditions are more favorable. 
The results of experiments show however that unless 
planting is carefully done and according to the methods 
here outlined, no success can he expected. 
THE AMERICAN PEONY SOCIETY 
The American Peony society will hold its twentieth 
annual exhibition in the Northwest this year. It will he 
at the Hippodrome, Minnesota State Fair grounds, mid¬ 
way between the Twin Cities of Saint Paul and Minne¬ 
apolis, and ideally situated for a record-breaking attend¬ 
ance. It is the first time the exposition has been held that 
far west. 
The twentieth exposition will give the flower lover the 
opportunity to see probably the largest collection of 
peonies ever assembled, its geographical location making 
this possible. Naturally the Central states will be largely 
represented, more so than ever before in fact, but this 
does not mean that more distant points, including both 
east and west coasts will not have their creations on ex¬ 
hibition. Canada also will send its quota. Last season’s 
exhibition was at London, Ont, it will be remembered. 
The exhibition management has selected the slogan 
“See a Million Blooms at the Peony Show” as a fitting 
one for the wealth of blooms that will be on display. The 
tentative dates of June 12. 13 and 14 have been selected 
but these are subject to change because of the vagaries 
of the growing season. 
Other peony shows which have featured the June time 
in this section every year, will not be held this year, their 
respective managements having assured the American 
society that its twentieth exposition will have a clear 
field. 
Supporting the show also are the Northwestern Peony 
and Iris Society, Minnesota State Horticultural society, 
Minnesota Garden Flower Society, Minnesota State 
Florists’ Association, Men’s Garden Club of Ramsey 
County, and the Twin City Nurserymen and Landscape 
A rch i tects Associ at ion. 
Lovers of all varieties of flowers will find this show 
most interesting because there will be showings of many 
(lowers other than peonies. The main exhibition hall 
which is 270 feet long by 110 feet wide is ideal for the 
show. It is naturally lighted, and affords seats for sev¬ 
eral thousand spectators. 
Plan to attend, is the urgent invitation of the show 
management. Submitted by 
Luther P. Weaver, 
Publicity Representative 
542 McKnight Bldg., Minneapolis, Minn. 
Upon authorization of 
W. F. Christman, 
Secretary American Peony Society 
58 and Wentworth, Minneapolis, Minn. 
POPLAR CANKER IN SHADE TREES 
By I\ M , Trimble, Penna. Bureau Plant Industry 
Harrisburg, Pa. 
This troublesome disease in poplar trees kills off 
limbs and branches and either destroys the tree or makes 
it very unsightly. Poplar varieties are most susceptible 
in this order: Lombardy poplar, Bolle’s poplar, Balsam 
poplar, Cottonwoods, Carolina poplar, and Japan pop¬ 
lar. The last is but slightly affected. Other kinds of 
trees are not affected. 
A few nurseries are developing stocks of other trees 
lo replace the once much planted poplars which have be¬ 
come very unsatisfactory for shade and ornamental pur¬ 
poses since poplar canker has become so widespread. 
As substitutes for the Lombardy poplar the pyramidal 
forms of sugar maple, English oak and tulip tree can he 
used, as well as the ginko and the Katsura trees. The 
sugar maple, Norway maple and sycamore are good types 
lo use in place of the more bushy varieties of poplar. 
THE MARKET DEVELOPMENT BOOKLETS 
F. F. Rockwell, Chairman of Market Development 
Committee, deserves at least a complimentary order for 
the attractive little booklets gotten up and offered to nur¬ 
serymen as business getters. 
The booklets will have printed on the back and cover 
anything desired by the nurseryman ordering it, so they 
may be used as enclosures from the mailing desk, they 
are ideal for “follow-ups” as they are right size for en¬ 
velope enclosures. 
The cost, to members is -$17 50 a thousand, including 
printing your name and address on the back page, or if 
you so desire, if no printing is wanted price is $15.00 per 
thousand. 
As Mr. Rockwell says try at least a sample thousand 
and see if they “pull.” Being undated they can be used 
at any time during the year and will not get stale. 
