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Q.Can We Use Potting Soil From Last Year Or Do We Need New Potting Soil Every Year?

Zone 80304 | wesleyjs37 added on May 17, 2023 | Answered

I typically grow tomatoes in a large pot and want to know if I can use the same soil I used last year to grow tomatoes this year. Can you recommend amendments to the soil that would make this possible? Also I typically grow petunias, geraniums, and veronica in large pots. Do these pots also need fresh potting soil every year, or can I just add 4″ to the top layer of soil?

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