Exactly HOW & WHEN should I start Container-gardening?

Hello Chas You can plant your onion seeds now. For the rest, since we don't know the temp in your garage, buy a cheap thermometer with a prong on the end that will read down to 40 degrees (From cooking aisle in grocery store). Insert it in the soil in your garage and when the temp gets to 70 degrees, plant the rest. Then take it outside a week or so after April 15th starting with a few hours a day and increasing it each day until the plants are hardened off. I think you are trying to put too much into one pot but give it a whirl and see what happens. Also, you'll need water and light inside your garage either from windows or bulbs. Hope this helps Johnny

I live in So. Georgia and I planted my seeds, in the garage, the first week of Jan. I grow only heirloom tomatoes and harvest my own seeds from the previous years fruit. I do the early seed planting to see how many will germinate. The plants are moved outside in containers in mid-March or when the last freeze is forecast. I suggest you do the same. Try an heirloom such as a Cherokee Purple tomato. You will never plant another hybrid tomato. Your climate is much like ours. Plant in 5 gallon buckets or containers. Go to YouTube .com and you can learn all you need to know.

i would place the containers in a place to receive sunlight.indoors ofcourse.i start mine 4 to 6 weeks before the last frost.i am in the carolinas we plant unions and potatoes in the garden the weekend after valentines day.every thing else is after easter.good luck,hope i helped