DAHLIAbEL NURSERIES 
Additional Cultural Instructions 
POT ROOTS, as described on page 1 can be 
planted in the garden the same as you would a root 
division, or about the same depth as the bottom of 
the ball of dirt on a plant, or they can be potted in 
3 " or 4" pots in April and one or two cuttings 
taken. This will give you a branched plant for 
setting out in May for early blooms. 
ROOTED CUTTINGS, should be ordered for 
delivery 15 to 20 days earlier than plants, and you 
should have a cold frame, sufficient 1 / 4 ," to 3" pots 
and suitable potting soil along with some knowledge 
of their care. We follow through the behavior of 
Dahliadel root divisions, pot roots, and green plants 
but on rooted cuttings we can only guarantee deliw 
ery in good condition because the care and attention 
given a plant from potting to hardening off for 
planting out is the making or breaking of the vitality 
of your stock, and this responsibility must be left 
in your tender care. 
EUROPEAN CORN BORER. This is a serious 
pest when infestation is heavy. This borer when 
very small enters just above the leaf bracket and eats 
out the inside of the node, weakening it so the first 
storm snaps off the stem. All weeds, corn or dahlia 
stalks should be either destroyed or dug in before 
May 1st as a precaution. 
The U. S. Dept, of Agriculture Bureau of EntO' 
mology and Plant Quarantine of Washington, D. C. 
has accomplished much in research and development 
of control methods, and will forward you bulletin on 
Protection of Dahlias from Infestation by the 
European Corn Borer on request. 
The New Jersey Agricultural Experiment Station 
of New Brunswick, N. J. has issued a bulletin on 
Protecting Dahlias from Corn Borer Injury which 
will be mailed on request. 
FOR CORN BORER DUST according to U. S. 
Dept, of Agriculture formula, see page 48. 
INSECT CONTROL WITH A HOZE GUN, is 
as simple as watering your garden. We have found 
this cartridge spray method very effective in the 
greenhouse as well for the control of Thrips which 
is one of our most stubborn pests. A complete line 
of Insecticides and Fungicides is available, so prao 
tically all pests and fungus diseases can be control' 
led. It is the easiest way to spray of any method 
we have tried where a hose pressure of 3 5 lbs. or 
more is available. Full directions are supplied with 
each outfit. Descriptive pamphlet on request. See 
Hoze Gun listed page 48. 
AMERICAN DAHLIA SOCIETY 
CLASSIFICATION OF DAHLIAS 
DEFINITIONS 
Involute, turned inward, forward, or towards the face 
of the ray. 
Revolute, turned outward, backwards, or towards 
the back of the ray. 
Diameter, meaning maximum width, without regard 
to depth. 
A. Large. Flowers more than seven inches in dia¬ 
meter. 
B. Medium. Flowers three and one-half to seven 
inches in diameter. 
CLASS I. Single Dahlias: Open-centered flowers, 
with only one row of ray florets, with the margins flat 
or nearly so, regardless of number of florets. For ex¬ 
ample, Newport Wonder, Scarlet Century. 
B. Mignon. The plants do not exceed about eight¬ 
een inches in height. For example, Coltness Gem. 
CLASS II. Orchid-flowering Dahlias. Flowers as 
in Single Dahlias except that the rays are more or less 
tubular by the turning inward of their margins. For 
example, Everest, Leopard, Buttercup. 
CLASS III. Anemone Dahlias: Open-centered flow¬ 
ers, with only one row of ray florets, regardless of 
form or number of the florets, with the tubular disc 
florets elongated, forming a pin-cushion effect. For 
example, Ada Finch. 
CLASS IV. Collarette Dahlias: Open-centered flow¬ 
ers with only one row of ray florets, with the addition 
of one or more rows of petaloids, usually of a different 
color, forming a collar around the disc. For example, 
Erica, Sofa, Geant de Lyon, San Mateo Star. 
CLASS V. Peony Dahlias: Open-centered flowers 
with two and not more than five rows of ray florets, 
regardless of form or number of florets, with or with¬ 
out the addition of smaller curled or twisted floral rays 
around the disc. For example Dahliadel Glory, Susan 
Coe. A. Large B. Medium. 
CLASS VI. Star Dahlias: Open-centered flowers, us¬ 
ually two to five inches in diameter, with two or five 
rows of somewhat pointed rays, with more or less re¬ 
volute margins. For example, Buckland Star, Leith 
Hill. 
CLASS VII. Incurved Cactus Dahlias: Fully double 
flowers, with the margins of the majority of the floral 
rays revolute for one-half or more of their length and 
the rays tending to curve toward the center of the 
flower. For example, F. W. Fellows, American Triumph 
and Lilac Glory. A. Large. B. Medium. 
CLASS VIII. Straight Cactus Dahlias: Fully double 
flowers, with the margins of the majority of the floral 
rays revolute for one-half their length or more, the 
rays being straight or slightlv recurved. For example, 
Ambassador, Miss Belgium, Golden Sonne. A. Large. 
B. Medium. 
CLASS IX. Semi-cactus Dahlias: Fully double flow¬ 
ers, with the margins of the majority of the floral rays 
revolute for less than half their length and the rays 
broad below. For example, Satan, Amelia Earhart, 
Miss Elsie Jane. A. Large. B. Medium. 
CLASS X. Formal Decorative Dahlias: Fully double 
flowers, with the margins of the floral rays slightly or 
not at all revolute, the rays generally broad, either 
pointed or rounded at tips, with outer rays tending to 
recurve and central rays tending to be cupped; all flor¬ 
al rays in a somewhat regular arrangement to the ex¬ 
tent of having four or moi- e recognizable rows of rays 
surrounding the center. For example. Jersey’s Beauty, 
B'ick“ve Bride, Sagamore, Golden Eclipse. Treasure 
Island. Dr. John H. Carman. A. Large. B. Medium. 
CLASS XI. Informal Decorative Dahlias: Fully dou¬ 
ble flowers, with margins of floral rays slightly or not 
at all revolute, the rays generally long, twisted or 
pointed, and usually irregular in arrangement. For 
example. Fort Monmouth. Jane Cowl, Kathleen Norris, 
Lord of Autumn, Spotlight, Murphy’s Masterpiece. A. 
Large. B. Medium. 
CLASS XII. Ball Dahlias: Fully double flowers, ball¬ 
shaped or slightly flattened, floral rays in spiral ar¬ 
rangement, blunt or rounded at tips and quilled or 
with markedly involute margins, the flowers more than 
three and a half inches in diameter. For example, 
Mary Helen, Jayseedee, Supt. Amrhyn, Mrs. C. D. An¬ 
derson. 
CLASS XIII. Miniature Dahlias: All Dahlias which 
normallv produce flowers that do not exceed three and 
one-half inches in diameter, pompons excluded, to be 
classified according to the foregoing definitions. For 
example. Little Jewel, Miniature Formal Decorative; 
Rhoda. Miniature Informal Decorative; Bishop of Land- 
aff, Miniature Peony; Baby Royal. Miniature Semi¬ 
cactus; Teddy Johnson, Miniature Ball. 
CLASS XIV. Pompon Dahlias: Having same char¬ 
acteristic as Ball Dahlias, but, for show purposes, not 
more than two inches in diameter. For example, John¬ 
ny, Nerissa, Little Edith, Bob White, Yellow Gem, Hon¬ 
ey. 
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