Hi V. You've got a great idea and I understood on first reading that you submitted a rough draft. Yes, there are some spelling and punctuation errors, but I know you'll correct those.
You might conclude your letter by leaving your phone number in case others want to share ideas or contribute to your effort. Perhaps, someone might offer a plot, others might donate seeds or seedlings, while others might offer to plant and weed or pick and distribute the produce.
If you can keep only one person from going to bed hungry, then you will have made a difference.