302 



HORTICULTURE 



April 10, 1920 



THE 

 BOILER OF 



Uneiqualled Fuel Economy 



KroMehell BoUen, the best by tam 

 1879. Forty jemn' •zyiarlaaa*. 



THE QUAXJtTT FLiAOB OF BOSTON 



K«cardlnK tht Kroeacbell, It U the 

 b«at w« hara erer had and lattafae- 

 t»ry beyond oar expectatlona. It he«ti 

 ■p especially qolck and baa aaved ua 

 ••Balderably already lo tbe price »f 

 fBal. Wben we are In need of aootber 

 k«UeT we will >1t« the Kroeacbell the 

 ■rat eonalderatToii. 



(BlKned) WH. W. BDGAB CO., 



WAVBBLAY, MASS. 



K= 



Kroeschell Bros. Co., 



4M W. Brie Bt. 

 OHICAOO 



When You Buy —Get a Kroeschell 



S,M«,>M aq. ft. et (laaa wm eovlpped witk 

 Kroeachell Boilers dorlnc the year »t !•!•. 



OHIO'S CKUCBBATBD OTOLAMKir 

 SPBCIAXJ8T 



After nalnc joor No. 12 KroesehcU 

 Boiler I came to the coneliuioo tkai 

 bad I to Install more bollera It wenld 

 be the Kroeacbell and no otber. It 

 really la a pleaanre to beat, no tronbto 

 to get tbe dealred beat In a Tery abort 

 time. 



(Signed) CHBIBT. WINTEBICH, 

 DBriANCB, OHIO. 



SVJI-OO-V.B. 



A SCLPHIJB-FISH OII/-CAIUJOLIC COMPOCND 



The Master Spray of the 20th Century 



y jp— — V FOR THE CONTROl, OF 



/CMWRlEt rREMDinPRMUUIX ^HE SAN JOSE, oyster shell and other 



Insecticide \ scale insects, green, roset and 



WOOLirr APHIS — Known fts Plant Lice. 



PEAR PSYLLA, CELERY, ONION and ROSE 

 THRIFTS — Known as Plan< Fleas. And t,he 

 FUNGUS SPORES DEVELOPING the BROWN 

 or RIPE ROT of the PEACH, PLUM and 

 other STONE FRUITS. PEACH LEAF CURL. 

 APPLE and PEAR CANKER and SCAB. 

 And many other species of FUNGI SPORES. 

 Send for the New Booklet Describing 



SULCO-V.B. 



A combined contact Insecticide and fungi- 

 cide of known reliability 



— Right in Principle and Price 



direct — go to your dealer first 



\ NEWlfDBK.P.SA./ 



Simple, Sure and Safe 



From your dealer or 



^i^ COOK & SWAN CO. Inc. 



IM Front Street 

 KBW TOBK CITY 



141 Milk Street 



BOSTON, MASS. 



Oee. H. Frailer, Mgr. 



The Recognized Standard Insectleide. 

 A apray remedy for green, black, white fly, 

 tbrlpa and soft scale. 



FUNGINE 



For mildew, met and other blights affect- 

 ing flowers, frnlts and vegetables. 



VERMINE 



For eel worms, angle worms and other 

 worms working In tbe soil. 



Quarto, $1.00; Gallon, $3.00 



SOU) BT DEIAXBBS 



Apkiae Manufacturing Co. 



MADISON, N. t. 



VS?ANDA 



Ji»' 



WHEN 



TREES AND 

 BLOOM. 



SHRUBS 



Sare your plants and trees Jnit the 

 thing for greenliouse and eatdoor nse. 

 Destra.TS Mealy Bug, Brown and White 

 Scale. Thrips, Red Spider, Black aad 

 Green Fly, Mites, Aats, etc., withoat 

 Injury te plsDta aad wltboat odor. 

 Used aoesrding te directlens, ear staad- 

 ard Insecticide will prereat raTages oa 

 yssr craps by insects. 



Nsn-pelseneas and harailesa te user 

 sad plsnt. Leading Seedsssea sad 

 Florists bSTS Bsed It with weaderfal 

 resBlts. 



Destroys Lice la Ponltry Hsnses, 

 Pless so Dsgs and all DoBestle Psta. 

 Bxcelleat ss s wssk for dogs and other 

 animals. RelleTes aiasgo. Dilate with 

 water 30 to St parts. 



Vi Pint, SOc.; Pint, 5«e.; Qnart, Mci 



H OallsB, «1.M; OaUoB, ft J*; ( Gal- 



loa Can, «IO.M| 1* OkIUb Casi. »2*.M. 



DlreetloB on paekage. 



LMWON OIL COMPANY 

 IHt t. 411 W. Ll*|lM St, 



To give the approximate Saturdays 

 when tiie various trees and shrubs are 

 to be in blossoms a calendar has been 

 compiled from various sources, which 

 should prove of value to visitors to 

 the Arnold Arboretum. The dates In 

 the following schedule are not the 

 earliest when a single blossom can be 

 seen, but when they may be said to be 

 in blossom. 



Of course, the blooming of many ex- 

 tends over a long period, as in the case 

 of forsythia; and the date of blooming 

 Is likely to vary several weeks in dif- 

 ferent years. The forecast for this 

 season may be a week or more early 

 or later than the actual date. No men- 

 tion is made in the list of most of the 

 willows and alders, as April 3 was 

 their tentative date; likewise April 10 

 was mentioned for poplars in general, 

 peach, red maple and elms. Other 

 dates in the calendar are: 



April 17 — Birches, earliest magnolias 

 (foreign), spice bush (benzoin), 

 leatherwood (dirca), forsythia. 



April 24 — Earliest foreign sherries. In- 

 cluding Sargent's (Japanese). 



May 1 — Shadbush, late willows, earli- 

 est lilacs, sugar maple, Norway 

 maple, sycamore maple. 



May 8 — -Fothergilla, cherries, pears, 

 moosewood maple. 



May 15 — ^Apples, redbud (Judas tree), 

 early cornels, American magnolias, 

 most lilacs. 



May 22 — Horsechestnut, early thorns, 

 later lilacs. 



May 29 — Earliest syringas (Philadel- 

 phus), flowering dogwood (Comus 

 florlda), sheepberry, thorns, late 

 lilacs. 



June 5 — Late cornels, laburnum, vlbur^ 

 nums, syringas, latest lilacs, early 

 rhododendrons. 



June 12 — ^Cone-bearers (pines, etc.), 

 smoke tree, rhododendrons, azaleas, 

 laurel, fringe tree, sumachs, yellow- 

 wood (Virgilia). 



June 19 — Locust, catalpa, late syringas, 

 later rhododendrons. 



June 26 — Linden, mountain maple 

 (ripening of shadbush and cherries). 



July 3 — Chestnut, late elder. 



July 11 and after — Sophora, kolreur 

 terla (bladder-nut), witch-hazel In 

 the late fall; Japanese witch-hazel 

 In December, or possibly not until 

 February of next year. 



