What kind of bulb?

When I plant bulbs I trowel in a tsp. of granular low nitrogen fertilizer and cover with a couple inches soil, then place bulb/s. I use what is on hand such as tomato fertilizer, rose fertilizer, bone meal, superphosphate, or a combo. Sparingly! Or follow the directions :-) given.

If bulbs are planted: when growth shows potted ones may be given diluted per directions liquid or in ground ones may be sprinkled with granular which is watered in. I have read not to fertilize again. No rationale was given.