Full text of journals and monographs in agriculture, ecosystem ecology, energy, natural resources, marine and freshwater science, geography, pollution and waste management, and environmental technology and law.
Local Web pages: town, city, county agencies (water, history)
Local Audubon Society, birding or wildlife groups
Local nursery or landscaper's Website (plants, hardiness zone, growing season)
Local historical society
State website: native flora, fauna; state department of wildlife
State University Extension service (plants, trees, invasives, growing season, possibly rainfall)
Ask research librarians for help and other ideas
Outside the US
Information for foreign countries. Sources will vary. Look for similar types of organizations as those mentioned above, see what is available on the Web from your local area. What information might your family be able to provide?