Please help!!! When do you fertilize?

Since you just planted the seeds they have yet to germinate. Keep the area moist but do not over water, otherwise the seeds may mildew or rot. Depending on where you are located my suggestion is to allow the seeds to germinate before adding fertilizer. When the seedlings reach a height of 3-6 inches then this would be the time to fertilize using Miracle Grow (follow the directions) for veggies. Be careful not to over fertilize the seedling otherwise they will die. I recommend fertilizing every 2 weeks.

Now should the plants begin to yellow near the base then you are over watering.

I hope this helps

The Seed Guru

Do not fertilize seeds. They do not need fertilizer until they have their third set of true leaves--the first set of leaves are seed leaves not true leaves. Fertilizing seeds or young seedlings is detrimental to their growth. When you set them outside sink them down to the leaves. Tomatoes grow roots along a buried stem.

It is a good idea to mulch. Tomatoes like to be constantly moist--not sopping wet just moist. Mulch keeps the moisture from evaporating. Do not water daily. A good soaking once a week is plenty.

It is rather late to be planting seed. It takes a week or even 2 for the seed to sprout and about 6 to 8 weeks to grow into a plant ready to be set out and that's if you have optimum conditions for their growth

i wouldnt other than using a very small amount of time release like osmocote in the transplant pots .. depends on your strategy. The final garden spot should be enriched with lots of well composted organic matter ie manure ect and the transplants should be planted very deep to promote a good root structure and this will yield a much more vigorous and productive plant than direct seeding and nuking with fertilizer .. ive found i really dont have luck doing it that way, fertilizing promotes lots of fast growth but little in the way of production ... for me anyway ... good organically enriched well drained soil, practically no fertilizer, and transplanting very deep is what works for me ... mulch, i wouldnt mulch until they are in the garden spot and up a foot or so ..