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HORTICULTURIST 



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The Canadian Horticulturist 



P.ibli«htd bf Th« Horllcullurjl 

 Publlshlnje Company. Limited. 

 The Canadian Horticulturlet is publilv i >i' ■ ffi of 

 each inontU in two cililioni. as foliowi: 



FLORAL EDincJi* 



Devolod to tlic interests ot anmtfur horticulture- 

 landscape cnrdcJiitiK, floricullurc. fruit Bn<l vegetable 

 ftordeniuK— and to the work and progress of Horticultural 

 Societies. Official organ of — 



Canadian Hortictiltoral Council 



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'"""' FRUIT EDmON. 



Devoted entirely to the interests of commercial fruit 

 and veKetable RTowcrs — official or^an of The Canadian 

 Horticultural Countil', Ontario Fruit Growers' Association 

 and of Niagara Peninsula Fruit Growers' Association. 



Subscription Rates.— $1.00 a year; $2.00 for three years 



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Communications should be addressed 



THE CANADIAN HORTICULTURIST, 

 Peterboro. Ontario. 



, Horticultural j 

 ! Societies | 



Ontario Gladiolus Society 



AT a recent meeting of the Ontario Gladiolus 

 Society, it was oeGnjtely decided to hold 

 the iirst annual meeting and show in 

 Alma Ladies' College, St. Thomas, August 23 

 and 24. Many Horticultural Societies have 

 signified their intention of exhibiting and quite 

 a number of splendid prizes have been offered. 

 With the fast growing popularity of the gladiolus, 

 it is in the interest of gladiolus growers to get 

 behind the Ontario organizations. — P. S. Dobson, 

 Secretarv. 



American Paeony Society 



The 19th Annual Exhibition of the American 

 Peony Society in co-operation with the Ontario 

 Peony Society and the London Horticultural 

 Society will be held at the Armouries, London, 

 Ontario, about June 14 and 15. The exact date 

 will be announced later. A goodly list of open 

 classes and prizes is being offered. 



Hastings 



Under the direction of the Hastings Horti- 

 cultural Society, Arbor Day, May o, was made 

 one of lasting memory to the municipality by 

 the planting of a Memorial Avenue of maple 

 trees in memory of those who died in the Great 

 War. The actual planting of the trees by a 

 selected list of veterans was followed by an 

 interesting and varied program of speeches 

 and music. 



. _. ,,i, 'i^corated on Sunday and to 



supply li. The prtion of the society's 



• rial I'ri'ui I . ited with gladioli has been 



olTicially pr'xIauiJ the American Gladioli 

 Society's Trial I'l t for Canada. 



i he Cabbage Root Maggot 



Wm. A. Ross. VinzIanJ Exper. Station, 

 Vincland. Oat. 



WF, would urge all gardeners to acquire the 

 habit of treating their early cabbages 

 and caulillowcrs every year with cor- 

 rosive sublimate, in order to prevent the ravages 

 of the white i.iau- :nts, which burrow into the 

 roots and only tni frequently destrny thousands 

 of plants, "fhc treatment outjined below is a 

 simple one, and in the hands of commercial 

 growers has proved to be almost 100 i>er cent, 

 effective. 



The roots of the plants should be saturated 

 with corrosive sublimate solution, 1 oz. to 10 

 gals. ()4' to K cupful to every plant). "The 

 solution may be applied by means of a watering 

 can with a long spout, the end of which should 

 be plugged to allow o;ily a small stream to issue; 

 or by means of a wooden pail and dipper or cup; 

 or, in the case of large fields, by means of a 

 wooden barrel with two lines of thin rubber hose. 



If the plants are set out before European 

 plums blossom, the first application should be 

 postponed until the plums are almost in full 

 bloom. If the plants are set out later, the first 

 application should be made four days after 

 ilanting. Two more applications should then 

 <e made at intervals of a week. 



Corrosive sublimate may be procured from 

 any druggist. 



it is deadly poisonous to man and animals, 

 and for this reason great care should be exer- 

 cised in using it. It should be dissolved and 

 kept in glass or wooden containers as it will 

 corrode metal. 



In cases where only a few plants have to be 

 treated, it would be advisable to buy the cor- 

 rosive sublimate in tablet form ana use one 

 tablet to every pint of water. 



St. Thomas 



The Horticultural Society has enjoyed a most 

 successful year to date and the membership 

 objective of 3000 is nearing a reality. The 

 purchases of shrubbery, roses and gladioli, 

 though greater than in former years has hardly 

 been sumcient to meet the demand, so deeply 

 have the citizens become imbued with the spirit 

 of beautification. The landscape and city 

 beautification department is in the hands of 

 Wm. Potterfield, formerly of Toronto, as super- 

 intendent with a staff of six men. The Societv 

 trial grounds are being replanted and will 

 present a much better appearance than in 1921. 



A special effort is being made .to produce 

 enough bloom throughtout the season to keep 



vacant around each vine stock. One-thirt! 

 this concreted surface was painted white, anotlu 

 third ochre red, and the remainder black. 



The results were remarkable, since i 

 plots which hail been painted red and 1 1 

 vines were twice as vigorous as on tli .,:■ 

 plots. The reason for this is that the ti ip.ri 

 ture of the ground is cnn.siderably hi : 1 

 those areas having either a red or a bl;i 

 and this increase of temperature has an 

 ate effect upon the growth of the plants. I ; 

 studies throw light on the superiority of the 

 of certain territory, such as the black • 

 Morocco. It has f)cen noted too, that '. ^ 

 in some of the best grape-Waring Inc 

 the South of France is either reddish i 

 and this no longer appears as a mere .u . 

 Scientific American. 



t 



Many gardeners use nitrate of soda as a 

 stimulant to force the growth of the plants after 

 they are started. Nitrate of soda is a concen- 

 trated fertilizer furnishing nitrogen, that ele- 

 ment which makes the green and vigorous 

 growth in plants, and should be used sparingly 

 to avsid injury. The usual custom is to scatter 

 a little (1 lb. to 100 feet) nitrate of soda along 

 the rows of plants and mix it with the soil by 

 means of a rake or hoe. Another method is to 

 dissovle a tablespoonful of the nitrate of soda 

 in a pailful of water, and use this solution for 

 watering around the plants, taking care that 

 only a small quantity of the Water is applied 

 around each plant. It is vastly better to make 

 frequent light applications of the nitrate rather 

 than supply too much at one time. 



To control cutworms, scatter poisoned bait 

 thinly over the infested area after sundown. 

 For bait, use the following formula proportion- 

 ately in whatever amount is required: — 



Bran ^._ _ 20 lbs. 



Paris Green or White Arsenic 1 lb. 



Molasses 1 quart. 



Water. 2or 2'/i gal 



Mix the dry bran and poison in a tub. Dis- 

 solve the molasses In the water and wet the bran 

 and poison with the same, stirring well so as to 

 dampen the bran thoroughly. 



Color of Ground and Plant Growth 



Some curious experiments as to the effect of 

 the color of the soil were recently described in 

 the French journal La Traction Moderne. 

 These experiments were made in a vineyard. 

 The surface of the soil was lightly covered with 

 reinforced concrete, a suitable space being left 



The Care of Lilacs 



I AM frequently asked by my gardening frit 

 to explain the reason why their lilacs ar 

 shy to bloom. In a few cases the deling i 

 cies are du2 to wrong position or unsuitable 

 but in most instances the failure to prodm 

 normal supply of blossom has been due to 

 of pruning and omitting to cut away the (i^. 

 flowers. I have seen gardens where old lit. 

 blooms have been allowed to stay on the bush< 

 indefinitely, and I have often been tempted i 

 enter such gardens and relieve the poor bush 

 of their unwanted progeny. The formation ' 

 new growth during the summer is indispensah 

 to the develooment of bloom the followir 

 season, and as this growth is considerably check) 

 by the process of maturing seed, it becom 

 necessary to remove the flowers as soon as th< 

 are over. When the bushes have ceased ' 

 (lower is also the correct time to do any nece 

 sary pruning. This operation consists in cuttii 

 away weakly shoots and removing all the sucke 

 — if the plants have been grafted — -from tl 

 base of the shrubs. It is well to remember th 

 lilacs bear their blossoms on wood of the previoi 

 summer's growth, so that the encouragement 

 this growth is best given by the judicious u 

 of the pruning knife. The centres of the busl 

 must be opened up, so there be a free circulatic 

 of air and a full play of sunshine on the ne 

 growth. The formation of healthy summ 

 shoots may be further advanced by giving tl 

 shrubs a generous top-dressing of rotten manu 

 at the same time the pruning is undertake 

 The delightful fragrance which hovers around 

 bush laden with blossoms is one of the mo 

 pleasing of the numerous delights of the sprit 

 garden, and any extra care liestowed on tl 

 bushes is undeniably worth while. — Gardenii 

 Illustrated. 



Dandelions, plantain, and other perenni 

 weeds may be cut out of the lawn with a shar 

 narrow-bladed trowel or knife, and chickwee 

 ground ivy, and the like may be pulled up 

 cut out K^ith a hook-bladed tool. Cut out i 

 tap-rooted plants deep below the crown or thi 

 will grow again. 



The best time of the year to trim such trees 

 Maples, oaks, elms and particularly Norw; 

 maples is in June. It is at this time of the ye 

 that the new Cambium bark is being forme 

 The sap is returning and the wound will 1 

 quickly healed. Trees may be trimrned at ai 

 ti-ne. It is well to cover the wound with a pai 

 of some sort. Care must be used in trimmii 

 trees so that the beautiful form of the natui 

 tree will be maintained. In most cases the de, 

 or broken branches are the only ones whi 

 ought to be cut from the tree. "Trees should 

 left as nearly as possible in their natural foi 

 and beauty. We cannot usually improve ' 

 nature. It is a mistake to cut the limbs 

 Norway maple. Norway maples usually tr 

 themselves. They are low headed trees with t 

 round tops and ought to be left as such. Wh 

 trees are trimmed do not leave a stump. S; 

 the limb close to the body of the tree. 



