Sounds like a piece of mulch. Citrus tree roots are whitish and round. If you feel you need to report, I would search this forum for either "gritty mix" or "511 mix". Or, you can try to find Farfad commercial mixes (search our forum for the correct number - their potting soils are numbered, and there are 2 that are very suitable for potted citrus). None of what you're thinking of using are really very suitable for potting mix for citrus. No rocks and definitely no sand at the bottom of the pot, it does nothing to help with drainage, and in fact sand can present drainage and oxygenation issues. There are just tons of discussions on this forum regarding potting mixes, so search for the above and you'll find the messages that talk about how to mix up these two potting mixes. I would save the instructions in My Clippings on GW for future reference.

Patty S.

sounds like good advise. Thanks