Swollen black Roots?

[camille1585]

Yup, looks good! I noticed that this happens mostly on my freshly purchased phals. I'm guessing that the roots don't like the drier atmosphere after having happily grown in a warm, humid greenhouse, and then they end up getting black/brown marks. The reason I suspect this is because the roots that grow in my care usually never develop such marks. Don't know if it's actually the case, but I'd think it's a good guess!