Question
I am working in inner city Baltimore. I am starting a vegetable garden in containers, small through large, and have never done any gardening before. My questions are:

1. how many seeds should I plant to provide for a margin of error? I am asking for donations because it is a non-profit project and have no idea how much to ask for. I want about 30 containers with a diversity of vegetables.

2. soil:  is there a special type to consider for vegetables?

really, i am completely lost. so if you can tell me anything about ensuring seeds grow when you plant them, please tell me. Thank you very much!

Answer
Amanda, seed germination is dependent solely on the age of the seed.  New seed has a germination rate of about 90%.  These odds diminish by about 10% every year after.  So if you're planting fresh seed purchased this year, practically every seed will germinate.  Just be sure not to plant the seeds too deep.  This is a common error with new gardeners.  Most seeds should be planted the same depth as their diameter, which means most seeds should be planted one inch or less.  Use a mulch to keep the soil moist to ensure quicker germination.

Soil is the the most important factor in gardening.  It doesn't matter if you're planting in containers or in garden beds.  I always recommend an organic mix which includes compost, peat moss, aged manure, and shredded leaves.  Many garden centers will deliver a product including these materials or sell them in bags.  Organic soil provides a steady supply of nutrients to the plants for months and also drains very well due to its loamy texture.  Plants grown in organic soil tend to be less susceptible to disease and insects.  Once again, just be sure to mulch the soil with straw or dried grass clippings to retain moisture.

I hope this answered your question.  Please write again if I can ever be of assistance.

Regards,

Mike