Container Garden Soil Quantity Estimator
Calculate exactly how much soil you need for your pots, planters, and container gardens
Results
Container Volume:
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Soil Needed:
0
Number of Bags:
0
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FoxFarm Ocean Forest Potting Soil
Perfectly pH adjusted for container gardens, this premium blend is ready to use right out of the bag. Your plants will thrive with this nutrient-rich soil mix!
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Grow beautiful container plants with this specially formulated mix that feeds for up to 6 months. Lightweight and excellent for moisture control.
View on AmazonFrequently Asked Questions
How accurate is this soil calculator?
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Our calculator provides estimates accurate to within 5-10% for most standard container shapes. For irregular containers, we recommend adding 10-15% extra soil to account for variations in shape and settling.
Should I fill my container completely with soil?
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No, you should leave about 1-2 inches of space at the top of your container to allow for watering without overflow. This space is called “head space” and isn’t included in our calculations.
What’s the difference between potting soil and garden soil?
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Potting soil is specially formulated for containers with better drainage and aeration. Garden soil is heavier and may compact in containers, restricting root growth. Always use potting mix for container gardens.
How often should I replace soil in my containers?
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Most container gardens benefit from fresh soil every 1-2 years. Some fast-growing plants may need annual replacement. Our calculator helps you plan for these regular soil refreshes.