This document lists 9 URLs providing information on plant and tree health, disease treatment, root systems, and community farms. The URLs cover topics like identifying and curing sick plants, dealing with root damage in red oak trees, issues with fig trees, the importance of healthy roots for trees, plant identification, root structure, reconnecting with one's roots, and small community farms in South Africa.

1. Lesson 18

10. • http://www.growsonyou.com/question/show/10084-how-to-cure-this-sick-plant
• http://kimsfirstveggiegarden.wordpress.com/2012/07/17/week-17-sick-zucchini/
• http://www.dirtdoctor.com/newforum/root/red-oak-roots-eaten-away-worth-saving-
t6668.html
• http://savingourtrees.wordpress.com/2012/10/05/something-is-wrong-with-the-fig-
trees/
• http://www.yourleaf.org/blog/erin-silverstein/2011-11-21/healthy-roots-mean-healthy-
trees
• http://npic.orst.edu/envir/plants.html
• http://en.wikipedia.org/wiki/Root
• http://russellaaron.wordpress.com/2013/01/07/post-185-or-how-im-getting-back-to-
my-roots/
• http://www.aromahead.com/blog/2011/02/28/community-farms-in-south-africa-a-
small-miracle/young-plant-growing-in-sunshine/