Re-using previous year's potting mixture in containers

garyc1234 · June 18, 2016

Does anyone have advice on re-using a previous year's potting mixture when growing in containers? (The potting mixture was used for growing tomatoes in the past.) Basically, this is to save money on buying new potting mixture every year. (I used Miracle Grow Potting Mixture, and NOT the Moisture Control version).

I'm thinking for a 10 gallon container, 45% new potting mixture, 45% old potting mixture, 10% compost, and a scoop of perlite to help the drainage given the compost and old potting mixture. Then after these are mixed together and tomato plant is in the container, put a ring of TomatoTone fertilizer around the base. (larger containers would use this same ratio)

What do you think?

June 18, 2016	#1
garyc1234 Tomatovillian™ Join Date: Mar 2016 Location: Zone 10a (Alameda, CA) Posts: 67	Re-using previous year's potting mixture in containers Does anyone have advice on re-using a previous year's potting mixture when growing in containers? (The potting mixture was used for growing tomatoes in the past.) Basically, this is to save money on buying new potting mixture every year. (I used Miracle Grow Potting Mixture, and NOT the Moisture Control version). I'm thinking for a 10 gallon container, 45% new potting mixture, 45% old potting mixture, 10% compost, and a scoop of perlite to help the drainage given the compost and old potting mixture. Then after these are mixed together and tomato plant is in the container, put a ring of TomatoTone fertilizer around the base. (larger containers would use this same ratio) What do you think?