Texas A&M: Nursery/Floral Crops
- Provides information on topics such as different types of structures, heating requirements, irrigation and fertilisation requirements for plants growing in greenhouses.
- http://aggie-horticulture.tamu.edu/greenhouse/nursery/guides/

US Davis Rooting Database
- Provides propagation information, including required chemicals and timetables, for various species.
- http://rooting.ucdavis.edu/PCHOME.HTM

Germination Requirements - Perennials
- Document in PDF format listing the germination requirements and duration for several hundred perennials, sorted to genus level.
- http://horticulture.sfasu.edu/hrt416/notes/germination%20guidelines%20perennials.pdf

Washington State University, Cooperative Extension - Trees and Shrubs
- Propagating deciduous and evergreen shrubs, trees and vines with stem cuttings.
- http://cru.cahe.wsu.edu/CEPublications/pnw0152/pnw0152.html

Seed Propagation - The Basics
- Course notes for a class at Stephen F. Austin State University covering both basic and more advanced concepts in seed germination.
- http://horticulture.sfasu.edu/hrt416/notes/SEED%20PROPAGATION.pdf

Plant Production
- Collection of articles on plant production, equipment, and nursery practices, with illustrations. University of Florida IFAS Extension.
- http://edis.ifas.ufl.edu/TOPIC_Nursery_Propagation

Woody Plant Seed Manual
- Provides comprehensive information relating to the biology of tree and shrub seeds, including genetic improvement and germination.
- http://www.nsl.fs.fed.us/wpsm/

Rooting Data Base
- Online resource listing the rooting methods for hundreds of woody plant species. Searchable, alphabetically organized list.
- http://www.growit.com/Know/Rooting.htm

Weed Control in Nursery Crops
- Discussions on weed control, weed identification, and herbicide management in nursery crops. From Oregon State University.
- http://oregonstate.edu/dept/nursery-weeds/

Commercial Boxwood Production
- North Carolina State University factsheet. Propagation information and nursery practice.
- http://www.ces.ncsu.edu/depts/hort/hil/hil-407.html

Center for Applied Nursery Research
- Performs needs-driven research for the green industry in an operational nursery setting in Georgia. Overview of current projects and past results, staff, and event calendar.
- http://www.canr.org/