July 17, 1909 



HORTICULTURE 



93 



r 



A DESTRUCTIVE BORER. 



Another pestiferous insect has in- 

 vaded Boston Common and Public Gar- 

 dens iu the form of the Leopard Moth 

 (Zenzera Aesculi.) The leopard moth 

 larva penetrates the bark and albur- 

 num, sometimes encircling the latter 

 before pupating. I notice that in many 

 cases pupation takes place at the en- 

 trance. The borings are emitted and 

 can be seen at the base of the tree; 

 that is, where the soil is freshed up 

 around the trea In the Dutch elms 

 another indication of their presence is 

 a small streak of sap emitting from 

 the hole. The trees mostly infested 

 aie the sugar maples, ash, oak, Ameri- 

 can and Dutcli elms. The laiter are 

 completely invaded, as can be seen 

 along Lafayette Mall, and it is inte;- 

 esting to notice the injury caused by 

 last year's larvae and the concealed 

 methods of the present year. Its pres- 

 ence in a tree does not mean imme- 

 diate death to the tree, but renders it 

 dangerous to pedestrians wheie large 

 trees ai'e infested on public highways 

 inasKuch as the limbs are weakened 

 by the borings and by the interruption 

 to the flow of sap. 



It is very difficult to exterminate 

 this insect on large trees, owing to 

 its method of concealment; but in the 

 younger tBees they are more easily de- 

 tected if, as I have already said, the 

 soil is freshed around the base, so that 

 the borings may be seen when they 

 fall. The moth is white with black 

 glossy spots, resembling the spots of 

 a leopard, and these same designating 

 marks together with a blackish seg- 

 ment next the head are to be seen on 

 the larvae. Cutting and burning the 

 limbs affected, treating the eggs on the 

 bark of the trees or, where holes are 

 observed, pouring into them some car- 

 bon bisulfide, and then plugging the 

 hole with putty, soap, or something o* 

 a similar nature, or pushing a piece 

 of strong wire into the hole and there- 

 by killing the larvae are some of the 

 remedies used. 



RICHARD J. HAYDEN. 



A LEAF MINER 



{Ctleo/ihora Henterobielld) 



The Imperial Biological Institution 

 for Agriculture and Forestry at Dah- 

 lem in reply to the editor of Moller's 

 Deutsche Gartner Zeitung in regard to 

 methods of combatting this injurious 

 insect on fruit trees, states that the 

 treatment of the caterpillars by the ap- 

 plication of poison, is made exceedingly 

 difficult by the sack-like envelope. that 

 protects the creature. Still the spray- 

 ing with petroleum emulsion mixed in 

 the proportion erf 1-9 of water has 

 been proved of great use when applied 

 at the unfolding of the leaves. As the 

 insect as a rule forms burrows in the 

 leaf and leaves the epidermis un- 

 touched, excepting at the point of en- 

 try, it is only in summer just at the 

 time of the escape of the young cater- 

 pillars from the eggs that spraying is 

 of much use. The application of ar- 

 senical mixtures for this purpose has 

 to be carried out with a great deal of 

 caution, in view of the dangerous ef- 

 fects of the poison on human beings 

 and animals; and for this reason it 

 cannot be recommended. The young 



"trmry Bug Hmm Him Domm.' 



Insect-destroying 

 preparations that do 

 their work well and 

 effectively are the 

 cheapest. Bowker's 

 Arsenate of Lead 

 and Bowker's Pyrox 

 are recognized stand- 

 ard insecticides and 

 fungicides for both 

 indoor and outdoor 

 use. Bowker's Insect 

 Emulsion destroys 

 many kind of plant 

 lice, black and green 

 flies, etc. Call or 

 send for catalogue. 



DRU/I^CD INSECTICIDE 

 DUnNLn COMPANY 



43 CHATHAM ST. BOSTON 



mm 



Dried, screened and packed In bags of 

 100 lbs. each. 



PULVERIZED SHEEP MANURE 



PURE UNIFORM RBI,IABI,E 



A strong and quick acting manure, 

 highly recommended for carnations 

 and chryeanthemums. 



SHREDDED CATTLE MANURE 



EAST TO HANDLE AND APPLI 



Stronger and better In every wv 

 than rough manure. Lasts mue^ 

 longer on the benches. Unequalled tv 

 mulching and feeding roses, liquid 

 manuring and mixing with bench an4 

 potting soil. Used by all the largeat 

 growers. 



Agk Your Supply Man or Write 

 Ub for Circulars and Pricee. 



THE 



Pulverized Manure Co. 



31 Union stock Yards CHICAGO 



caterpillars pass the winter in their 

 envelopes, in the neighborhood of the 

 buds, so that the cultivator can De- 

 stroy the greater proportion . by a se- 

 vere cutting back of the shoots in au- 

 tumn and winter. F. M. 



PULLMAN'S INSECT and 

 WORM DESTROYER 



Kills Worms and Auts la ground, 

 KlUa Cut Worms. 

 Kills all kinds of Insects. 

 Acts as Fertilizer to ground. 

 This powder is put up In packages 

 i-rom 1 to 100 lbs. 



I'uli directions and testimonials In 

 eacli package. 



PRICE 



lib 20c I 26 lbs SI. BO 



5 lbs ,!5c 50 11>9 3.75 



10 lbs 65c I 100 lbs. 6.0O 



NICOTINE 



Kills Thrips, Red Spider, Black Fly, 

 Apliis, Green Fly and otlier greenhouse 

 pests. 



Tills solution Is put up In 

 !» pt. cans ...at-35c I 1 pt. cins...at » 1.40 

 M pt. cans ...at 50c i i|t, cans. ..at a.~5 

 54 pt cans ...at 90c | % gal cans at 5.00 



Sgal.ca s at 40.00 



Salesmen Wanted Everywhere 



—Made By— 



The Philadelphia Insecticide Co. 



324 Queen Lane, (iermantown, Phlla.. Pa. 



IMP SOAP SPRAY 



THREE SUCCESSFUL YEARS 



Outdoor or Indoor 



ELM BEETLE OR 

 WHITE FLY 



EASTERN CHEMICAL CO. 



Pittsburg Street, Boston, Mass. 



The Best 

 BugKillerantf 



Bloom Saver 



For PROOF 



WriUto 



P.R.PatettioriMC*. 



OWENSBORO, IT. 



Jas. Taylor of Mt. Clemens, Mich., 

 has started a flower store in that city, 

 wliich ought to prove a good venture 

 in a place where there are so many 

 thousands of visitors annually. 



