How to use fertilizer? I have a sack of Agway 10-20-20 fertilizer in my crypt. I...

I have a sack of Agway 10-20-20 fertilizer in my crypt. I believe it is a granular fertilizer. It is pellet like. I know the 10-20-20 is the NPK ratio. I am wondering, though, how i actually use fertilizer approaching this? How much per X. amount of soil? Toss on top of soil or dissolve in marine? I have not a clue. I plan on using on potted house plants. WHAT SHALL I DO??
Planting grass seed?
Answers:    Fertilizer is used at pounds per 100 square feet (or acres). The ratio is going to depend on the fewer of the soil (or what soil conditions your are trying to achieve). 10-20-20 is a general purpose fertilizer, but I (personally) would be hesitant to use it within small containers- it is very easy to obtain too much. Remember, fertilizer is a type of salt- too much will burn (and kill) your plants. It¡¯s just my too cents, but in a pot or container, I would use something beside a little more ¡°wiggle room¡± like Miracle Grow. If you do use it on the house plants, I would use a couple tablespoons over the soil and water it in.
-K
Grape plant assistance..?
That type of fertilizer is designed to be used more for outdoor gardens than houseplants. The NPK ratio shows that it is for enhancing fruiting and blooms more than green growth. It is to be spread resting on the soil and watering/rain dissolves it over time to let it sink into the soil.

It can be used on house plants, but it will not always accomplishment as you might expect. The reason is that the different color pellets you see surrounded by the bag are the different components of the fertilizer. Putting them in a small houseplant pot will not distribute the different materials equally, as when they are broadcast into a immense garden area. You may end up overdosing your houseplant on N, P or K.

You'd be much better rotten with a liquid soluble fertilizer (Peeters, Miracle-Gro, etc.) or a time release pellet (Osmocote) designed for your houseplants.