How to cut herbs - for basil don't pluck leaves off, instead trim stem. Leave two sets of leaves on stem (leaves grow in pairs across from each other). Cut immediately above the second set of leaves from the ground. Plant will then grow new branches from this cut.
The next time you have green onions, don't throw away the white ends. Simply submerge them in a glass of water and place them in a sunny window. Your onions will begin to grow almost immediately and can be harvested almost indefinitely. We just use kitchen scissors to cut what we need for meals. I periodically empty out the water, rinse the roots off and give them fresh water.
Simply set out purchased bags of topsoil, cut them open, and plant seeds and seedlings right into the topsoil. The bag garden in this plan will be brimming with more than 20 vegetables and culinary herbs by its third year!