Organic vs. Synthetic
Organic fertilizer is derived from plant, animal, and mineral sources. Synthetic fertilizer is lab-created and can be tailored to specific plant needs, but it might not help your overall soil health.
Liquid vs. Granular
Liquid fertilizer is used to boost nutrients directly to the plant via roots or leaves. Granular fertilizer is sprinkled on the soil to breakdown over time, and will supply nutrients over weeks or months.
When to Fertilize
For quick release fertilizer, every 2-4 weeks as needed. For slow release fertilizer, once at the beginning and then again midway through the season.
Fertilizer Application
For granular, apply on top of soil avoiding the stems of your impatiens. For liquid, mix your formula and apply directly to the root by drenching the soil.