The New England Greenhouse Floriculture Guide: A Management Guide for Insects, Diseases, Weeds, and Growth Regulators is a reference manual for commercial greenhouse growers. It presents information on pest, diseases, and algae management and other production management techniques for floricultural crops grown in greenhouses.

The Guide is a joint effort of faculty and professional staff of the New England land grant universities and support from New England Floriculture, Inc., sponsor of the biennial Northeast Greenhouse Conference and Expo.

The information in this guide is for educational purposes, and is based on the best information available at the time of publication. All references to commercial products and trade names are for informational purposes only. No endorsement or approval of commercially available products is intended.

Guide Overview:

General Pesticide Information: covers general topics about proper and safe use of pesticides, pollinator safety, OSHA communication standards, worker protection safety, and organic certification.

Integrated Pest Management and Insect Biology: includes information about insect and mites pest identification and damage, IPM strategies, and chemical and biological control options (including mode of actions and target pests).

Disease Management: this section provides information on plant pathogens, management practices, and chemicals for the control of plant diseases of greenhouse crops.

Plant Growth Regulators (PGRs): this section provides general use information on PGR applications and how environmental and cultural conditions, plant genetics, and physical and chemical factors can affect plant response to PGRs.

Weeds, Algae and Liverworts: this section covers information to control weeds inside and outside of the greenhouse; algae on surfaces, water, and equipment; and liverwort management.

Appendices: provide additional information on responding to pesticide exposure, information about the NEF, Inc., Extension personnel, diagnostics clinics and soils testing laboratories, and additional references.

We welcome your feedback. Please send comments and suggestions about the Guide's editor, Dr. Rosa E. Raudales (, or 860 486 6043). Thank you.