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How to tell the difference between different types of plant fertilizers
Use soluble fertilizer when you want to water in the fertilizer.
This fertilizer is usually added to the watering can.
This is best for helping boost growth when its growing season and for frequently fed container plants.
Use granular fertilizer when you need to supply a concentrated amount of nutrients. A plant may be lacking in a particular nutrient (this will be evident through such things as yellow leaves, , etc.