I am very new to growing a garden as a matter of fact this is the frist time I have done it. So far everything is doing well. But I do have a few questions I hope someone can help me with.

1- why are my tomatos geting blooms but no fruit,the blooms stay for a while then die and fall off.(these are the frist blooms) My plants are very green and bushy. I was just wondering if this is normal ?

2-Can I use some old Prenatal vitamins on my pea,suash,okra,cucumber,sweet bell pepper,and tomato plants ?

At this time I am useing Miracle Grow on them once a week like the directions say.

Thank you for any and all help in this matter