City Of Somerville Departments
https://www.somervillema.gov/departments/departments-boards-commissions-and-authorities

Grow Native Massachusetts
http://www.grownativemass.org/

Groundworks Somerville
http://www.groundworksomerville.org/

Invasive Plants List – Massachusetts
https://www.mass.gov/info-details/massachusetts-prohibited-plant-list

Massachusetts Master Gardener Association, Inc.

The Massachusetts Master Gardener Association, Inc., located at the Elm Bank Reservation in Wellesley, MA, provides training and opportunities for camaraderie among individuals with a keen interest in horticulture in all of its many aspects, and who have a desire to share this interest and knowledge with others.

Simply put, Master Gardeners are experienced and trained volunteers who provide horticultural information and educational resources to the gardening public, and who offer technical support for horticulture projects and outreach programs.

One such resource is the Master Gardener Help Line email (MHSHelpline@MassMasterGardeners.org).  Typical topics of questions include: vegetables; annuals and perennials; lawn care; houseplants; organic gardening; insect pests; plant diseases; pruning; critter identification and control; water gardens; xeriscaping; native plants; composting and much more. For more information about their helpline: https://www.massmastergardeners.org/educational-resources/helplines

For more information about the Master Gardener program, go to http://www.massmastergardeners.org

New England Wildflower Society
http://www.newenglandwild.org/

Somerville Growing Center
http://www.thegrowingcenter.org/

UMass, Soil Testing
https://ag.umass.edu/services/soil-plant-nutrient-testing-laboratory