1. Organic fertilizers break down according to nature's rules, so they may not release nutrients as soon as you need them.
1.1. Point 1
1.2. Point 2
1.3. Point 3
2. Microorganims are required to break down and release nutrients into the soil.
2.1. Idea 1
2.2. Idea 2
2.3. Idea 3
3. Nutrients ratios are often unknown, and the over all percentage is lower than chemical fertilizers.However, some organic products are actually higher in certain nutrities.