Answer: To answer your direct question, a general purpose, balanced (eg 20-20-20) water soluble fertilizer such as MiracleGro used at a weak strength should be adequate for your seedlings. As you are beginning to discover, seed starting is always a bit of an experiment, in part because there is always some variation in the results from year to year. The key to producing good transplants is not only providing fertilizer, but also providing appropriate growing conditionsincluding very bright light, and then finally acclimating the plants to the outdoors and carefully planting them in the garden. You might find these two articles helpful
Seedstarting Made Easy at http://www.gardeners.com/gardeners/bgbseedstart.html and
Seedling Savvy at http://184.108.40.206/nga/articledetails.taf?id=514&kwd=seed&A... as you work with your transplants this spring.
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