Do I need to replace the (soilless) mixture in my containers for a new year? I have some tomato starts I need to get transferred, but have been putting it off as I haven't had a chance to get new soil. Wondering if I can just go get my hands dirty, now, or if I need to replace what's in my pots?
FWIW, I'm planning to put the tomatoes in a pot that had watermelon last year. Also looking to start new cucumbers (which were attacked by whiteflies or something of the sort last year and finally succumbed), but in the same pot as they were in before.