Last year I grew about fifteen Lacinato or Dinosaur kale plants in 16" pots and had a good crop. I ate them regularly 3-4 times/week for about 9 months.
This year I removed the plants from the pots and it seems that the roots are only a fraction the size of the pots - about 6-8" diameter- suggesting that there are still lots of nutrients in the old soil.
Last year I bought all the potting soil and now I'm preparing to plant again and wondering if some of the old soil could be re-used this year with the new potting soil. Has anyone tried this before?
I now have a batch of 10 - week-old seedlings ready for transplanting. The previous plants had no diseases and the only bothersome things were whitefiles and white butterflies. I live in north California.
Comments appreciated.