PETER HENDERSON & CO.— INTRODUCTORY. 



INSECTS. — The insects that infest Greenhouse plants are principally the Aphis or green fly, the 

 Thrip, the Red Spider, and Mealy Bug. Tobacco, either in the form of snuff or in solution — about the 

 color of strong tea — or by smoke, by burning the refuse stems, in either way is quickly fatal to green 

 fly, and will check in part the thrip. Either of the two first methods is most suitable for plants in 

 rooms, but in the greenhouse the smoke is most convenient, using about one pound of the stems to 

 every 1,000 square feet of glass, once a week or oftener. For Eed Spider and Mealy Bug, Coles' Insect 

 Destroyer put on with a barber's atomizer, is a certain remedy ; or they may be sponged off with 

 weak soapsuds. 



MILDEW. — The great scourge of Roses under glass is easily checked by painting the hot-vvater 

 pipes with a wash of Sulphur once in two weeks ; or when not firing, use the prescription given at 

 page 140, in "Practical Floriculture. " 



HEAT, LIGHT, AIR, AND MOISTURE.— The temperature of most plants in the winter 

 season at night should not exceed 55 r , and it will do no harm if it occasionally falls to 45°, with from 

 15° to 20° higher in daytime. LIGHT should be given whenever it can, directly on the plants from 

 December to April ; if it cannot, as in Window culture, the next best thing to do is to turn the 

 plants occasionally, so they get equal share on all sides. AIR, or VENTILATION is guided by 

 temperature to be kept, but should never be given so as to blow directly on the plants. MOISTURE — 

 Plants should never be watered unless the soil indicates by its lightness of color that it is dry, and then 

 they should be watered freely. This will be necessary two to three times a week in clear weather in 

 winter ; in Spring or Summer, nearly every day. If a plant is sickly or shows but little sign of 

 growth, the remedy is to withhold water, almost to the point of shriveling, until it shows indications 

 of growth. Avoid all fertilizers in such cases, and let Nature work out her own cure. 



SHADING THE GLASS. — The best shading we have ever used is naphtha, mixed with a 

 little white lead, so as to give it the appearance of thin milk. This can be put on the glass with a 

 syringe, very quickly, at a cost not exceeding 25 cts. per 1000 square feet. It holds on the entire 

 season until loosened by the fall frosts, which is, for most plants, just the time required to be 

 taken off. 



LANDSCAPE GARDENER and GREENHOUSE ARCHITECT.-For the infor- 



mation of those desiring his services we can, with all confidence, recommend Mr. Peter B. Mead, 

 of Mamaroneck, N. Y. , who has had a large and varied experience in this department. Mr. Mead's 

 good taste and judgment is displayed in some of the best laid out Grounds and Greenhouses in 

 this vicinity. 



PREMIUMS. — On all goods selected from this Catalogue (except "Low Priced List"), to the 

 amount of $10.00 (in one order), we will send, without charge, purchaser's choice of any one of 

 Mr. Henderson's three books — "Gardening for Profit," "Practical Floriculture," or " Gardening for 

 Pleasure" — the retail price of which is $1.50 each; or on goods selected to the extent of $20.00 

 and upwards we will send the buyer his choice of any two of the above three books, or instead a 

 copy of our latest work, 



HENDERSON'S HANDBOOK OF PLANTS, 



(A detail of its scope and character will be found on second page of corer.) 



the value of which is $3.00; but it is understood that the book, or books desired, must be selected 

 at the time of ordering. When the books are not wanted, their value may be selected in seeds or 

 plants at catalogue rates. 



HOW TO SEND MONEY.— Remittances should be made either by Draft, Post Office Order, 

 or Registered Letter ; but in no case should bills be sent in a letter, unless registered. Nearly all 

 loss of letters is in those unregistered containing bills. 



PETER HENDERSON & CO., 



38 CORTLANDT STREET, 



Peter Henderson, i 



James Reh>, > - T _ nr tr/\nir 



Alfred Henderson ) riii W YORK. 



