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Jli.y 1, 1909. 



The Weekly Florists' Review. 



Introducing Individuality In a Conventional Design. 



These gypsophilas are suitable for 

 forcing, and, brought into bloom in a 

 carnation temperature during April and 

 May, are useful. Plants for this pur- 

 pose can be placed in pots or boxes in 

 late fall, and started after they have 

 been well frozen. 



Pyrethrums. 



During the month of June, the single 

 forms of Pyrethrum roseum are ex- 

 tremely useful. In the northerly states 

 these do not open for Memorial day, but 

 where they will flower by that date they 

 are a particularly desirable hardy plant 

 to grow. Anyone desiring to work up a 

 good batch of these should procure seed 

 at once and sow in shallow drills, either 

 in a coldf ranie or under cheesecloth. The 

 seedlings will appear in a week or ten 

 days, and can be transplanted into nur- 

 sery rows when of sufficient size to be 

 conveniently handled. These will make 

 strong plants before winter, and will 

 render a good account of themselves next 

 season. 



Pyrethrums, if transplanted in fall, 

 are liable to winter kill, unless moved by 

 the early part of September. Spring 

 planting is the safest, and any dividing 

 of the clumps should be done at that 

 time. A number of named varieties are 

 catalogued by Europen specialists, but 

 such a wide range of colors can be had 

 from a packet of seeds that this is much 

 the simplest and least expensive method 

 of propagation. In Europe double forms 

 are popular. A small percentage of these 

 will come from seed, but the single flow- 

 ers are to be preferred for bouquet and 

 vase work. 



In planting pyrethrums, choose a piece 

 of ground with a little slope. On dead 



level land they are liable to rot in win- 

 ter. A light coating of leaves or straw, 

 applied when the ground has become 

 hard frozen, is the only protection re- 

 quired. 



THE COBWEB PLANT. 



The little cacti have been excellent 

 sellers in flower stores and W. H. Ritter, 

 of Philadelphia, reports that Semper- 

 vivum arachnoideum is proving also a 

 taking novelty in 1-inch pots. The plant 

 is popularly known as the cobweb, or 

 spider-web, houseleek, from the fact that 

 the rosette-like growths of pale green are 

 connected tip to tip by long, soft, white 

 hairs. If grown in the sun Mr. Ritter 

 has found the plants never lose the 

 ' ' web, ' ' which he says is a protection 

 from the sun in the dry season, when 

 the plant closes up tight and looks like 

 a small ball of cotton. The commercial 

 stock ordinarily is a single head. The 

 growth is made in the spring, when the 

 little pot will contain a cluster of the 

 rosette-like heads. 



A VENTILATION WRINKLE. 



Emil KroU, a rose grower for the Chi- 

 cago market, has adopted a novel idea 

 for ventilation. His houses run east and 

 west and he formerly had ventilators 

 only on the north side, hinged to the 

 header. The result was that when his 

 ventilators were open in warm weather 

 and there was the frequent strong south 

 wind, it caught the top of his ventilators 

 and was carried down into the houses. 

 When he hinged his ventilators at the 

 ridge, he did not get the free circulation 

 of air that is required. One of his neigh- 

 bors, George Damm, conceived the idea 



of so attaching the ventilators that they 

 could be raised straight up, being kept 

 parallel with the slope of the roof, and 

 Mr. Kroll, after experimenting with this 

 style of attachment, has now so equipped 

 his ventilators on eight houses. 



He uses a long, double-action hinge, 

 attached to the ridge and to the lower 

 edge of the ventilator, putting three 

 hinges on each ventilator sash. There 

 are two lines of ventilating machines, one 

 of which raises the upper edge of the 

 line of ventilator sashes, the other ma- 

 chine raising the lower edge. By work- 

 ing one of these machines he can open 

 his sashes at the top, and then by operat- 

 ing the other machine he can raise the 

 lower edge, so that he can place his line 

 of ventilating sash any number of 

 inches, from a mere crack to eighteen 

 inches, from the glass in the roof. The 

 sashes are at all times directly above the 

 openings they are intended to close and 

 a strong south wind will blow right 

 through under the sashes, without creat- 

 ing any undesirable draft in the houses. 

 The sashes do not even have to be closed 

 during rain, unless it is blowing. 



Mr. Kroll has eight houses of the 

 Dietsch short roof pattern. Six of them 

 are 15x175, one 15x120 and one 12x120. 

 His crops are Killarney, Richmond, Maid 

 and Bride. 



Altoona, Pa.— W. T. Shields will en- 

 gage in the greenhouse business at 2402 

 Fourteenth avenue. 



Kankakee, III. — It has been locally 

 reported that Faber Bros, are planning 

 to remove their greenhouses from the lo- 

 cation at Merchants and Washington 

 streets, but on the contrary they are re- 

 building some of th.3 houses there. 



