Since you are in Florida I wonder if your soil and/or water is high in salt. I've had problems with too much salt in our water and it kills a lot of the plants we've tried to grow.
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I would try going to a gardening center nearby and pick out plants that are already growing. Unless, you are planting heirlooms, there is no reason why you can't start with plants. I only plant a few things by seeds - zucchini, cucumber, peas, etc. Also, the gardening center (not Wal-Mart, but a local one) should carry plants that are viable for your area. As well, you should be able to ask for advice. Or reach out to the local extension office, they should be able to direct you to someone with an abundance of knowledge regarding plants in your area (look up master gardener for your area - you should be able to find someone willing to help).Soon2BChixMom: Thank you for the advice! I have been checking out the zone listed on the back of the packages of plants. I did check out the website, I made a list... then unfortunately never looked at it again. I want to grow vegetables (Soooo badly!).