Sei'temukii 1, 1921 



The Florists^ Review 



149 



Tobacco Dust, 150-lb. hags, $4.00; 400-lb. 

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WOOD LABELS 



LABELS, for nurserymen and florists. 

 Benjamin Chase C o., Derry Village, N. H. 



Good grade wood labels, $1.00 per 1000. 

 Chute & Butler Co., Peru. Ind. 



ASTERS DYING OFF. 



My aster plants, of which a sample is 

 enclosed, are gradually dying, drying 

 up about even with the ground. I do 

 not find any worms in the plants 

 and the soil is rich, since it was planted 

 in 1920 to a crop of potatoes. Three 

 years previous to this it was planted to 

 asters and again this year to asters. 

 Will you advise me as to the trouble 

 and suggest a remedy? H. F. M. — 111. 



The dying off is due to one of sev- 

 eral causes, the most probable of which 

 would seem to take place in the early 

 stages of growth. Seedlings are often 

 allowed to stay too long in the flats 

 and when transplanted are put too deep 

 in the soil for their own good. Seed- 

 lings develop no trouble until they have 

 been planted out and have made con- 

 siderable growth, not infrequently 

 nearing the flowering stage, when they 

 start to dry up and die. There is noth- 

 ing you can do beyond pulling up and 

 burning the plants which have this stem 

 rot. It seldom affects asters grown in 

 the open air, but is destructive to green- 

 house-started seedlings. C. W. 



DO YOU KNOW THIS WORM? 



We are having trouble with our asters 

 and gladioli. There is a white worm, 

 about one-fourth of an inch long, "with 

 a brown head, that works rapidly at 

 the roots, later going into the stem 

 and killing the plants. Other aster 

 plants seem to have a sort of dry rot, 

 the stems turning black and falling 

 over. Can you advise as to some method 

 by which the worms can be killed t 



E. S. S.— 111. 



I have had no experience with this 

 particular worm and perhaps some 

 reader may be able to suggest a rem- 

 edy which will help E. S. S. 



Carbon bisulphide will generate a 

 gas which suffocates these and all other 

 soil pests, but it will be a considerable 

 task to treat a large area with this 

 remedy. Holes are bored with a pointed 

 stick, twelve to eighteen inches apart 

 each way, preferably when the soil is 

 damp, and a teaspoonful of the liquid 

 is poured into each hole, which is then 

 immediately covered. The carbon soon 

 evaporates and must be used immedi- 

 ately. It usually comes in 1-pound cans. 

 Since it is of an explosive nature, be 

 sure not to have any exposed lights 

 near it. 



The aster stem-rot is usually caused 



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Mention The Review when you write. 



by allowing the plants to crowd too long 

 in the seed flats and, when transplant- 

 ing, they are buried to keep them 

 erect. This starts the stem-rot that 

 later develops. Planting in ground 

 which has previously had the disease 

 aggravates the trouble. Pull up and 

 burn all diseased plants. C. W. 



HARDY GARDEN HELIOTROPE. 



What is the true name for hardy gar- 

 gen heliotrope? D. F. C. — Minn. 



The botanical name of the garden 

 heliotrope, which is a herbaceous per- 

 ennial and not the tender plant offered 

 so much for bedding out purposes, is 

 Valeriana officinalis. It is an aromatic 

 plant and its flowers are sometimes 

 white, but more often purplish in color. 



C. W. 



CLUB ROOT ON CYCLAMENS. 



Some of our cyclamens develop club 

 root. Will you kindly give information 

 as to the cause and suggest a remedy, 

 if there is anv? T. L. C— Minn. 



The writer has had no experience with 

 club root on cyclamens. It attacks the 

 brassiea family outdoors a good deal, 

 but the writer was unaware that cycla- 

 mens suffered from its attacks. Usually 

 a too acid soil is productive of club root 

 and, pcrliaps, tlie addition of some lime 

 in your potting soil would be of benefit. 

 Can any other readers, with experience 

 in club root on cyclaiiions, give us their 

 experience and advice? C. W. 



VARIETY OF ACHIMENES. 



Will you tell us the correct name of 

 the flower which is enclosed? 



N. K.— 0. 



It is a variety of achimenes of the 

 natural order gesneriacea', to which 





Safe and dependable for every use 

 under glass or in the field. 



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gloxinias and gesncras belong. These 

 three plants want the same treatment. 

 All need shade and succeed well in sum- 

 mer in ordinary greenhouses or in 

 sliaded coldframes with sashes left a lit- 

 tle tilted. 



STEVIA FOR CHRISTMAS. 



I have a bench of stevia which I de- 

 sire to get in bloom for Christmas. Will 

 you tell me when to pinch it for the last 

 time, so it will be on time? I can run 

 the house at any degree of temperature 

 that is wanted. C. C. M.— N. Y. 



If you want a good length of stem on 

 your stevia, it would not be advisable 

 to pinch after August 1. Stevia needs 

 a low temperature and if you keep it at 

 4;j to 48 degrees at night, it should be 

 in bloom on time. Should it seem at all 

 tardy, give it a little more warmth. 

 The cooler you keep it the better it will 

 be in quality. C. W. 



CUTTING BACK POINSETTIAS. 



W^ould it do to cut back poinscttias 

 now if they have made a growth of 

 from throe to six feet? Do you think 

 they would come again in time for 

 Christmas? I am afraid that they are 

 too far advanced at this time of the 

 year. P. S. — Mich. 



There is still time to cut the tops 

 from your poinsettias, have them break 

 and make good Rtems before the bracts 

 show, but do it at once. If you are 

 growing your plants in beds or benches 

 and there is ample head room, I should 

 prefer not to pinch. These starts, if 

 left alone, should produce remarkably 

 fine bracts for cutting. C. W. 



