Yes, as the plants mature they gain a "wood" like appearance. Clones, if really healthy, will be hollow up the stem like a straw. My older mothers are thick and more solid but the cuttings sent to flower grow with a hollow center. Looks like you are doing fine. I find that the roots start pure white but do kind of brown over time. I think I even have some mild root rot but I am at about week seven with one or so left. they still seem to be doing well. I enjoy The DWC quite a bit. Very quick growth.
Wow, you just put to rest all my worries.
Your right, my big mammas are 9 MONTHS OLD!!! I just realized how old they really are.
I remember my first grow and the main stem at the soil was hollow so it might have to do with age.
I was amazed my the growth in DWC, much faster than soil, I thought that my strain was slow growing but it looks like I was just buying cheap soil
I do buy the cheapest I can
I'm really glad you said that about the roots, they seem healthy now and they have gotten thick.
the roots nearly swallowed my bubble stone, with one plant I thought I could see that bowl shape that all the bubbles make on the surface etched in the root-mass shape.
Do you know if clones lose there strength if you take clones from clones?
I'm trying to decide whether or not to turn one of my clones in to another mother to take all of the next batches clones from, that way only one plant has to deal with scars
thats another thing that amazed me, the scars of my clones take only about 36 hours to heal.
I'll take a look at your grow now.