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Garden

How Often to Fertilize Tomatoes

Penn State Extension

Fertilize in-ground tomatoes every 2-3 weeks during the growing season. Container tomatoes need feeding every 7-10 days with diluted liquid fertilizer because watering leaches nutrients from the limited soil volume. Side-dress with dry fertilizer by creating a shallow trench 6 inches from the stem, applying product, and watering in thoroughly.

What You Need to Know

Fertilize in-ground tomatoes every 2-3 weeks during the growing season. Container tomatoes need feeding every 7-10 days with diluted liquid fertilizer because watering leaches nutrients from the limited soil volume. Side-dress with dry fertilizer by creating a shallow trench 6 inches from the stem, applying product, and watering in thoroughly.

For personalized recommendations based on your specific garden size and fertilizer, use our fertilizer calculator.

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