CALENDAR 



]une 



JUNE 16 NHPGA Twilight Meeting, 



6 p.m., Michaud's Nurseries & 

 Greenhouses, Exeter, NH; for 

 information: (603) 772-3698. 



JUNE 27 FTD District 1-C Annua! 

 Meeting, Lebanon, NH; for informa- 

 tion: Ray Savage at (603) 352-1 155. 



JULY 14 Connecticut Nurserymen's 

 Association Summer Meeting hosted 

 by Baker Nursery Companies, 

 Brass Rail, Lake Congamond, MA; 

 for information: (203) 872-2095. 



JULY 18-20 MANTS, Baltimore, 

 MD; (301) 256-6474. 



JULY 27-29 PANTS, King of 

 Prussia, PA; (717) 238-1673. 



August 



AUGUST 3 Massachusetts Nursery- 

 men's Association Summer Meeting 

 (hosted by Laughton's Garden 

 Center), Middlesex County 4-H 

 Fairgrounds, Weston, MA; 

 information: (508) 534-1775. 



AUGUST 5-8 AAN Convention, 

 Dallas, Texas; for information: 

 (202) 789-2900. 



AUGUST 12 New England 

 Nurserymen's Summer Meeting 

 (hosted by Winding Brook Turf 

 Farm); Kennebunk, ME; 

 information: (617) 431-1595. 



AUGUST 13-15 Northeast Organic 

 Farming Association (NOFA) \9th An- 

 nual Summer Conference & Celebration 

 of Rural Life, Hampshire College, 

 Amherst, MA; information: Amy 

 Wales or Mark Allman at (617) 

 259-4443 or Julie Rawson or Jack 

 Kittredge at (508) 355-2853. 



AUGUST 18 New Hampshire Plant 

 Growers' Association Summer Meeting, 

 Elliott & Williams Roses, Dover, 

 NH; for information: Bob Demers, 

 Jr., at (603) 625-8298. 



AUGUST 18-19 Pennsylvania Land- 

 scape and Nursery Trade Show & Con- 

 ference, ExpoMart, Monroeville, PA; 

 for information: (717) 238-1673. 



AUGUST 19 Vermont Plantsmen's 

 Association Summer Meeting, Univer- 

 sity of Vermont Horticulture 

 Research Center, South Burlington, 

 VT; for information: Scott Pfister at 

 (802) 244-7048. 



AUGUST 26 Eighth Biennial Griffin 

 Greenhouse and Nursery Supplies Open 

 House, Tewksbury, MA; 

 for information: (508) 851-4346. 



September 



SEPTEMBER 17 New Hampshire 

 Composting Conference, Center of New 

 Hampshire Holiday Inn & Conven- 

 tion Center, Manchester, NH; 

 for information: Nancy Adams at 

 (603) 659-5616. 



SEPTEMBER 22 NHPGA Twilight 

 Meeting, 5:30 pm at Carpenter's 

 Olde English Greenhouse & 

 Florist, Newmarket, NH; for 

 information: Rob Carpenter at 

 (603) 659-3391. 



SEPTEMBER 28-30 International 

 Conference on Thysanoptera, University 

 of Vermont, Burlington, VT; for 

 information: Bruce Parker at 

 (802) 658-4453. 



October 



OCTOBER 2-5 26tft Annual Confer- 

 ence, Professional Plant Growers Associa- 

 tion, Tampa Convention Center, 

 Tampa, FL; 1-800-647-PPGA. 



OCTOBER 20 NHPGA-spoHSored" 

 Pesticide Applicator Recertification Pro- 

 gram, place to be announced; for 

 information: Chris Robarge at 

 (603) 862-1074. 



November 



NOVEMBER 5-8 Association of 

 Specialty Cut Flower Growers' Sixth 

 National Conference, Doubletree 

 Hotel, Overland Park, Kansas; 

 for information: Alan Stevens at 

 (913) 532-5173. 



And Looking Ahead... 



JANUARY 27-29, 1994 New 

 England Grows, Hynes Convention 

 Center, Boston, MA; for information: 

 (617) 431-1622. 



Growing the Gardens 13 



at Strawbery Bank 



Anm Duncan 



Using Parasites and 21 



Predators to Control 

 Insects on Ornamentals 



Patricia j. Vittum 



MEMBER PROFILE 24 



Bay Farm & JMortn Hilt 



Calibrating Low Pressure 27 

 Boom Sprayers 



George W. Hamilton 



An Island Garden 

 Restored 



Virginia Chisholm 



30 



WORTH REPEATING 32 



A Test for Cholinesterase 



: : 



The Planismait is published in early 

 February; April, lune. August, October, and 

 December with copy deadlines being the 

 5th of each prior month. Whilecameta-ready 

 ads are preferred, set- up assistance Is avail- 

 able at a nominal fee. Free classified adver- 

 tising is offered as a member service. We 

 wilt carry a short message (no artwork or 

 logos) for one ortwo issues of Tfie Ptantsman. 



Cover 



Aldrlch Memorial and Garden, 1908. 

 Credit: Strawbery Banke Museum. 



For further information, please contact 

 the editor: Robert Parker at the UNH 

 Research Greenhouses, Durham, NH 

 03824, (603)862-2061;orPOBc#5,NewIields, 

 KH 03856. (6031778-8353. 



Iune&]uly 1993 

 1 



