Organic supplements for N-P-K

Healthy plants are not a coincidence, they are products of a well-chosen site with adequate sun, proper drainage, and nutrition.

To supplement your soil with fertilizer – the numbers on the package refer to N – P – K (Nitrogen, Phosphorus and Potassium).

Depending on what you are growing

In organic gardening, the labels aren’t quite obvious.
Here’s a summary to help:

Things you may have around the house: used coffee grounds (NPK - acid loving plants), egg shells (calcium/lime), fish tank fresh water (N):

The following is from http://txmg.org/hamilton/2014/06/18/ask-a-master-gardener-about-fertilizer/

Permission was requested for using the above.
Submitted by Barbara Bozek