The following collection of websites is full of interesting and useful ideas for teachers and would-be teachers. Ideas include simple, often inexpensive experiments which will turn students on to plants!
Wisconsin Fast Plants
Science and Plants for Schools (SAPS)
The site includes a section on Supermarket Science ideas, and also amongst many other intriguing suggestions, a section on crop improvement, and the morals and ethics of genetic engineering.
On the practical side there are many suggestions for lab investigations, which are easy to carry out, without expensive equipment.
British Lichen Society
Royal Botanic Gardens at Kew, UK. Information sheets
Scott’s Botanical Links
Missouri Botanical Gardens Duckweed site
Each of the lessons in this program is interdisciplinary designed to introduce students to plant science and increase their understanding of how foods grow. Activities enhance student's math, science, language, arts, social studies, music and art. You have many options in this program. Choose any or all of the suggested activities for your class. Many activities are for students to work independently and some are for group work.
Educational materials and Programs on Wildflowers
US Water Conservation Laboratory Experiments
Canadian Museum of Nature
A very useful site full of ideas, links and suggestions.
For those interested in mentoring, the Wisconsin Program of Scientific Teaching provides useful information.