HYBRIDIZER’S PAGE 
Presented to Help YOU Create Superior New Iris 
CATALOG HELPS FOR HYBRIDIZERS 
Realizing that most hybridizers are eager for all possible information as to 
which varieties are proving to be the best parents, | have incorporated in my 
variety descriptions many facts concerning such matters as (1) Notable 
descendants, illustrating the breeding possibilities of varieties, and (2) 
variety potency, that is, the fertility of the pollen and the ability of the 
variety to set good seeds. Pages 22 and 23 of my Manual give much further 
information along this line. 
Manual Gives Hybridizing Details 
My new IRIS MANUAL contains so much information on hybridizing that a 
number of my customers have referred to it as my Hybridizing Manual. Actu- 
ally, it contains 20 pages on hybridizing, and covers the wide variety of sub- 
jects and types of Iris outlined under Part III on the next page. 
My Exclusive HYBRIDIZER’S KIT 
Makes It Easy As Can Be To Get Started 
My RAINBOW HYBRIDIZER’S KIT is proving exceedingly popular. | have many 
letters confirming my belief that this Kit will simplify every hybridizing step 
for you. Now many who before hesitated are taking up this new fast-spread- 
ing hobby of American flower lovers. As far as | am aware, this is an exclu- 
sive offering; no other hybridizing kit seems to be available anywhere in the 
world. Thus, many of the orders | get for kits are for gifts. People naturally 
delight in giving something unique that their friends cannot buy in any store. 
Order yours, and one for a friend, today. 
RAINBOW HYBRIDIZER’S KIT—$6.95 postpaid; 2 for $13.50 
The most vital of the items included in this Kit are the two special 
tweezers. As no suitable ones are available on the market, | have had two 
special types made to order, designed specifically for this purpose. The 
Anther-collecting Tweezers have special flat rounded points that permit col- 
lecting the anthers without injuring the delicate style arms. The Clamp- 
style Pollinating Tweezers are designed to hold the anthers firmly and thus 
eliminate the strain of pollinating. The Kit also includes the following addi- 
tional items: Hybridizer’s Shears; 5 Camel Hair Brushes; 36 Special Sliding 
Pollen Boxes; 100 Pollination Tags in 4 colors; 2 Weatherproof Pencils, 50 
Seed Bags, 15 Printed Record Cards; 12 Simplex Permanent Labels; 1 Stylus 
for lettering labels; 1 copy of the leaflet ‘“Technique for Iris Hybridization.” 
Customers’ Views on These Kits 
“Have been using the Hybridizer’s Kit for quite some time and have had 
wonderful results so far this year.’’—Mrs. K. B. A., La Canada, California. 
"With that hybridizing kit 1 am a very, very happy hybridizer. Hope I will 
have some beauties in future.’—G. T. D., Seattle Washington. 
"Your kit is a Jimdandy. Those tweezers are so much easier to use. I intend 
to send you an order for Iris soon, as I believe most of my efforts are, or may be, 
wasted on the stock I have.’—Mrs. L. M., Port Hueneme, California. 
RECOMMENDED LISTS FOR HYBRIDIZERS 
| get so many requests asking for lists of the varieties most suitable for 
hybridizing that | decided to include here partial lists to help those who do 
not as yet have my MANUAL or SUPPLEMENT. 
ARILS—Oncos: Susiana, Nigricans, Nazarena, Lortetii, Auranitica. 
Oncogelias: Ulysses, Luna, Isolda, Parthenope, Theseus. 
Regelias: Lucia, Orestes, all 4 Korolkowis, Hoogiana Improved. 
UNUSUAL BEARDED—Oncobreds: Joppa Parrot, Heigho, Capitola, Ib-mac (True). 
Lady Mohr, Butterfly Wings, Blue Elegance, Morning Blue. 
Tall Autumn Bloomers: 
Sally Ann, Potawatomi, 
California Pink, Autumn 
Sunset, Polar King, De- 
cember Royalty, Jo- 
seph’s Mantle. 
Low Autumn Bloomers: 
August Waves, Billet 
Doux, Bengal Princess, 
Jean Siret. 
Dwarfs: Carpathia, Nana, 
Sulina, Rose Mist, Schne- 
kuppe, Sound Money. 
TALL BEARDED: Ruffled Bovu- 
quet, SQ 72, Blue Valley, 
Cherie, Solid Mahogany, 
Tobacco Road, Juliet, Snow 
Flurry, Easter Bonnet, 
Chantilly, Blue Shimmer, 
Casa Morena, Sunset 
Blaze, Mexico, Black For- 
est, Green Pastures. 
RAINBOW 
HYBRIDIZER’S KIT 
<& 
INTHEORR LEST INS 
DME TERS 
Pere 
HYBRID IRIS SEED 
For those interested in creating new Iris, but who do not yet have estab- 
lished clumps of first class new varieties for use as parents, and who wish 
to save time, these seeds offer intriguing possibilities. Not as certain as buy- 
ing the choice new varieties directly, but much cheaper and even more 
exciting and adventurous. Colors of seedlings will tend to follow parents, but 
there will be variation and opportunity for selection. 
SHIPMENT OF IRIS SEEDS: Summer and fall, after proper maturity. 
SOWING AND CULTURE (In brief): Iris seed is best sowed IN THE FALL, as it usually 
requires conditioning by winter cold to encourage high germination the first spring. A 
cold frame is ideal, if available. If not, sow out of doors. Use well pulverized, fertilized 
soil of the same reaction as you would use for rhizomes of the same type of Iris; that is, 
basic for Arils and Bulbous Iris; nearly neutral for Bearded Iris and Aril-Bearded Hybrids; 
and acid for Beardless Iris. To get bloom in place, sow seeds 6'' apart in trenches 9'' to 12" 
apart and |'' deep. If seedlings are to be transplanted the first summer, sow seeds 2'' 
apart in trenches 6'' apart. Cover with !/.'' of loam and |/,'' of sand. In cold, regions 
mulch out-of-doors seedbeds over winter with 2'' to 3'' of straw to prevent frost heaving. 
Most of the seedlings that come up the first spring will bloom the second spring. Aril 
seedbeds are usually kept dry in summer . . . Under ordinary culture seeds of Arils and 
certain other Iris germinate slowly over a period of several years. However, two research 
institutions have been working on the problem, and special techniques are now available 
for greatly speeding germination of difficult Iris seeds. Not nearly space enough here to 
go into these methods, but | will give explanations in my SUPPLEMENT. Also see MANUAL. 
NATURALLY-HYBRIDIZED SEEDS of TALL BEARDED IRIS—These are generous 
packets containing 50 to 100 seeds each. Saved from our better varieties of 
colors indicated. 
Your choice of Pink, Red, Bronze or Mixed Packet $1.00; 3 for $2.25 
Your choice of Yellow, Orange, Cream or White Packet 75¢; 3 for $1.75 
Your choice of Blue, Violet or Lavender . Packet 50¢; 3 for $1.00 
NATURALLY-HYBRIDIZED SEEDS OF ARIL IRIS 
ONCOCYCLUS Seed collected in Palestine—10 seeds per packet. 
Haynei, Special price, Packet 75¢; 3 pkts $1.50; Nigricans, Packet $1.75 
REGELIA Seed collected at Rainbow Gardens—20 seeds per packet. 
Seed from your choice of Vulcanus, or any form you specify of Korolkowi, 
Sfoloniferaio HOOGICnC aaa n nee e e PCCKe TiS TOO 
Three the same or different, for $2.50; 6 for $4.50 
Seed from your choice of Lucia or Orestes Packet $1.50; 3 for $3.50 
ONCOGELIA Seed Collected at Rainbow Gardens—20 seeds per packet. 
Seed from your choice of Artemis, Teucros, Oberon, Thor or Fides— 
Packet $1.25; 3 the same, or different, for $3.00 
Seed from your choice of Luna, Theseus, Ulysses, Packet $1.75; 3 for $4.00 
HAND-POLLINATED SEEDS OF ARILS—I have been so busy on my new catalog, 
my SUPPLEMENT and other services to customers | have had time to produce 
but a fraction of the hybrid Aril seeds | need. These seeds contain enormous 
potentialities for astonishing new hybrids such as man has never seen; | 
really should not offer any. But there is such widespread, insistent clamor 
for hand-pollinated crosses of Arils, | am releasing a limited quantity on a 
‘first come’’ basis, 5 to 10 seeds per packet, according to the rarity of par- 
ents and difficulty of setting seeds. Not enough of each cross to list here, 
but each will be labelled with both parents. You may even suggest one or 
both parents; | will send closest | have. 
Oncos x Oncos—Involving species priced under $5.00 . . per packet $3.50 
Oncos x Oncos—One or both parents priced $5 to $25 . . per packet $5.00 
Oncos x Regelias..... Packet $4.00; Regelias x Oncos . . Packet $3.50 
Oncogelias x Oncos . . Packet $3.75 
SEEDS OF OTHER TYPES OF IRIS—(Prices per packet of 50 to 100 seeds). 
SIBERIANS—Red $1.25; Pink $1.00; White or Light and Bright Blues 75¢; 3 for 
$1.50; Dark Blues and Violets, 50¢; 3 for $1.00. 
WESTERN NATIVES—Douglasiana $1.00; Macrosiphon 75¢; Hartwegi 50¢. 
MIXED COLORS in your choice of: Autumn Bloomers, Dwarfs, Low Growing 
(4 types mixed), Spurias or Juno (bulbous) Iris . . Packet 50¢; 3 for $1.00 
Multicolored HYBRID BROOM Seed 
Next to our Iris, our Multicolored Hybrid Brooms (Cytisus) receive the most 
exclamations of delight from visitors. This famous strain, developed by Prof. 
S. B. Mitchell, contains wide array of brilliant, contrasting colors—red, gold, 
apricot, rose, buff, white, orange, etc. Many striking bicolors in the mixture. 
Very rapid growing—you get a full-grown 6-foot shrub in 2 years from seed. 
Can also be used as a clipped hedge. For Westerners and others in fairly mild 
climates . . . Here’s a suggestion which will bring interested queries from 
every visitor to your garden. Sow half a packet over a circular area 15 inches 
in diameter. As soon as seedlings bloom, thin out, leaving 8 to give greatest 
possible variety in colors. They will soon grow together into what appears 
to be one large bush. Everyone will exclaim, and want to know how you 
obtained so many bright colors on one bush. Try it. 
Packet of about 300 seeds—75¢; 3 for $2.00 
Join the American Iris Society 
Everyone who loves Iris should join the American Iris Society. You will re- 
ceive helpful quarterly bulletins, with articles on culture, varieties, hybridiz- 
ing, rare types and other subjects. Membership is $3.50, which may be sent 
directly to American Iris Society, 444 Chestnut St., Nashville 10, Tennessee. 
CAMP ATAE 
SL tanTiheh TREE TERS 
“Flowers of remarkable size and hue, Flowers such as Eden never knew.’ R. H. BARHAM. 29 
