Make sure that you have lots of options available so they can get started immediately and stay busy. Digging holes has endless fascination.

Instant gratification helps. Plant radishes or grass seed. Results will be faster.

Growing their own will generally get kids to try eating things they otherwise wouldn't .

Getting dirty is part of growing up and having fun.

Act as a facilitator, rather than a leader who imposes direction. Be a good model.

When giving out supplies, try to keep seeds, tools, etc. as similar as possible to avoid the inevitable squabbles.

After an activity, do something to reinforce what everyone has learned. Talk about what went on, who did what, who saw what. If you can, have them write things down or draw pictures. If they're too young, take dictation.

When working with older children try to add responsibility and ownership to projects. ("Kasey is in charge of the wheelbarrow today.") Try pairing up older children with younger ones.

If you give children a healthy respect for gardens and plants when they are young, it will stay with them throughout their lives.