Portable Gardening

The secret to growing large vegetables is providing the proper nutrients to the soil.  Potting mixes are not always composed of the correct ratio of nutrients.  For fruit-bearing vegetables such as tomatoes and peppers, you need a high concentration of phosphorus, magnesium, and calcium.
To correct the soil imbalance, I would recommend supplementing the potting mix [...]

TEN TIPS ON HOW TO GROW YOUR BEST TOMATOES EVER:
1. Start your seeds early with the freshest highest quality seed,
preferably organic, in a peat-based, sterilized potting medium.
2. Do not allow your seedlings to get stressed by getting root bound.
Pot them onto 4″pots when the first set of true leaves appear.
3. Fertilize your potted seedlings weekly [...]