J 570 



The Weekly Florists^ Review* 



April 19, 1006. 



about 1,800 to 2,000 square feet of radia- 

 tion. With these figures and dealers' 

 prices on pipe and fittings you can esti- 

 mate the cost of material. L. C. C. 



CAPAQTY OF BOILER, 



I have a greenhouse 20x40 and eleven 

 feet high J sides four feet, vrith about 

 two feet of glass. I have a coil boiler 

 for 910 feet of radiation. Can I heat 

 another house the same as the above, or 

 add forty feet to the old house? Which 

 would be the better to get the best re- 

 sults from the boiler? I have a 3-inch 

 flow pipe under the ridge and return 

 under the benches in ll^-inch pipes, four 

 under the north bench, and under each 

 of the three other benches I have two 

 pipes, making ten pipes in all. I in- 

 tend to put in more pipes this spring. 

 Let me know how many I can feed with 

 a 3-inch flow. To build forty feet to 

 the old house I must first lay the ground ; 

 that is why I would like to know if there 

 is any diflference in heating one house 

 20x80 or two houses 20x40. S. S. 



If your boiler has a rated capacity of 

 910 square feet of radiation it is large 

 enough to heat the two houses 20x40, or 

 the one house 20x80. My preference 

 would be in favor of the one house 20x 

 80, although I am of the opinion that 

 the two houses 20x40 could be heated 

 more easily than- the single long house. 



carry the full capacity of the boiler. If 

 114-inch pipe is used and the house is 

 made 20x80, the 3-inch flow should sup- 

 ply fifteen returns the length of the 

 house. This is all based on water at 

 180 degrees. L. C. C. 



PIPING TWO HOUSES. 



We have one house 18x75 feet, nine 

 and one-half feet to the ridge, four and 

 one-half feet to the plates. The west 

 wall is brick, the east wall double 

 boarded, with tar paper between. There 

 is a shed on the north end. The two 

 side benches are two feet wide and the 

 two center benches four and one-half 

 feet wide. Adjoining the above house 

 on the south is one 19x60 feet, ten and 

 one-half feet to the ridge, five and one- 

 half feet to the plates; the west wall 

 brick, the east wall containing eighteen 

 inches of glass, double boarded and pa- 

 pered. The benches are the same as in 

 the other house. With a 2-inch flow 

 under each bench, how many 2-inch re- 

 turns will it require for 55 degrees of 

 heat when 20 below zero outside? 



J. A. C. 



The house 18x75, with water at 180 

 degrees, will require about 550 square 

 feet of radiation, or 880 lineal feet in 

 2-inch pipe; i. e., three 2-inch pipes 

 under each of the four benches, one flow 

 and two returns. The house 19x60 feet 



From the standpoint of convenience, 

 however, the long house is most desir- 

 able. The location of the boiler should 

 be at the end which will give greatest 

 protecticor from storms and wind ; i. e., 

 the most exposed end of the greenhouses, 

 if the slope of the land will permit. 

 The 3-inch flow is large enough to 



will require 520 square feet of radiation, 

 which is equal to 835 lineal feet of 2- 

 inch pipe. This amount is sufficient to 

 place a flow and two returns under each 

 bench save one, which would have a flow 

 and three returns. The most exposed 

 side of the house should be the one to 

 receive this extra line of pipe. C. 



CHRYSANTHEMUM LANONA. 



Of the numerous excellent varieties 

 certificated last fall by the Chrysanthe- 

 mum Society of America few scored as 

 well as Lanona, a seedling of lolantha 

 crossed Sarah Bernhardt, exhibited by 

 Nathan Smith & Son, Adrian, Mich. It 

 made ninety-four points on the commer- 

 cial scale and ninety-five points on the 

 exhibition scale. 



Lanona is an immense Japanese bloom, 

 flowering at a time when large blooms 

 are scarce. It is exceedingly artistic in 

 build, as shown in illustration, being ir- 

 regularly incurved, but not so closely as 

 to detract from its graceful outline. In 

 color it is pure white, with center petals 

 slightly tinted rose, enhancing its 

 beauty. An important feature is its 

 dwarf, sturdy growth, rarely exceeding 

 three feet in height and ample foliage to 

 cover the stiff stems. With ordinary 

 culture the blooms will attain a diam- 

 eter of eight inches. It will be es- 

 pecially valuable for early exhibitions, 

 being in perfection October 20 to 25. 



BRIDAL WREATHS. 



The bridal wreath I refer to is Fran- 

 coa ramosa, a very pretty and dainty 

 greenhouse subject. The popular name 

 has been given to the plant owing to the 

 pretty custom of tying the long, grace- 

 ful spikes of flowers to an arched wire 

 or willow wand, when they truly repre- 

 sent what their popular name proclaims 

 them to be. In the greenhouse the flower 

 spikes are generally allowed to assume 

 their naturally upright position, and a 

 more effective plant than the francoa 

 grown in this manner is difficult to find. 



Propagation is generally effected by 

 dividing old plants or potting off-sets, 

 which form freely around old specimens. 

 To those who have no old plants, a 

 writer in the Gardeners' Magazine says 

 he would like to recommend seed sowing 

 as a means of obtaining vigorous young- 

 sters and ultimately sturdy old speci- 

 mens capable of yielding immense num- 

 bers of spikes of bloom. 



The seed is not dear, and should be 

 ordered with that of the general run of 

 flower garden subjects. The same season 

 of sowing may also be followed, viz., 

 about the end of February or the middle 

 of March. A heated greenhouse and a 

 pan of good, sweet, open soil are neces- 

 Piiry, sowing the seeds thinly and cover- 

 ing them with a pane of glass until 

 germination takes place. If sown thinly 

 the seedlings may remain in the pan 

 until they are an inch across, when they 

 should be placed singly in small pots. 

 Summer treatment consists of shifting 

 on until 4 V^ -inch pots are reached, and 

 at this stage the plants will be best in 

 a cold frame, with slight shade from 

 the brightest sunshine. 



If room in the greenhouse is precious, 

 as it well may be where chrysanthemums 

 are growing in quantity, the young fran- 

 coas will be quite safe in a cold frame 

 until the beginning of December, pro- 

 vided they are kept fairly dry at the 

 roots and overhead, and a mat is laid 

 over the frame in severe weather. As 

 soon as room can be found for them in 

 the greenhouse they should be brought 

 in, and will then require more water, 

 but this should not be given in excess. 



No further potting need be done, and 

 no feeding should be necessary until the 

 flower spikes start to push between the 

 leaves. This will probably be about the 

 end of March, twelve months from sow- 

 ing, and the plants should be in full 



