I am doing a project and need to know what is important to garden club members in order to send them an email?

Question:I am a co-op student and my marketing project is to email garden clubs and offer them free samples of the garden products the company I work for makes. I need to know how to approach the clubs in my initial email so I want some insight into what they value most (ie free products, education, etc). This will help me choose my approach in order to get the largest response for my campaign. Any insight from gardeners/club members would be appreciated!

Answers:
Well try 4 different seasons worth of stuff, and a choice of 2-3 items each season. Like for spring, gloves, hand trowel, seed packs ect.