I generally see three different types of roots on my cuttings. Do these different types have specific names or are roots just roots? Also, are the type of roots any predetermining factor of up potting success.

1) Thick roots that are bright white. Usually fewer in number but normally large. Also see more of these on thicker diameter cuttings.

2) Thin spindly roots. Usually more of them but they are usually tan/brown. Usually on thinner cuttings.

3) Roots that look like, for lack of a better term, ice crystals/teeth on a comb. They are tightly packed and always white

Steve, I came to conclusion that as soon as I see 1/4 inch white solid roots, sometimes even shorter and just ONE, I plant it directly ion One Gallon Nursery Pot with MG Potting mix. I have 0% loss in my cuttings so far, ( knock on wood).

I think it all depends on the energy left in the cutting and the conditions it roots in (perfect humidty level?).

The thick ones are always nice to see. That's what you want.  The thinner ones start out white, but easily turn tan.  Usually because of too much humidity or variation in humidity.  But if the cutting didn't have much energy to start with, then it might create the weaker roots.

I'm not sure I understand your third type.  Often some of the stronger roots in the right conditions will send out a lattice of side roots.  That's good!  When I see that, I know the cutting is healthy.

Edit: Also roots that come out the bottom of the cutting or through a score mark will usually be thicker and stronger roots than those that push out through the bark.

James,

I scored my cuttings like you mentioned. I believe what you call "lattice" is what I referred to as teeth in comb. I usually see these growing out of my side of cutting score. Are there specific names for the "type" of roots we are discussing. I am glad to hear lattice seems to equate to a barometer of healthiness.

Steve

Aaron,

I saw that others up potted sooner than I normally do. When I went from Tupperware with spaghnum moss directly to one gallon pots, I had some losses. When I went from Tupperware to clear cups to one gallon, I had much better success. The confined space of the cup seems to concentrate root growth for me. I appreciate the suggestion and congratulate you on your success.

Steve

The very fine roots tend are for nutrient absorption. Larger roots are more for structure/support/transport.  Imagine the roots like a road system, large roots are the interstate where semis move and the finer the roots are the local streets where the little guy gets on.

If I was motivated I'd find my old college notes from Plant Nutrition for the exact details. But I haven't finished my first cup of coffee yet.

Kelby,
I am so happy you put it that way, now I know when they start getting the fine brown they are ready to eat, am I understanding that correctly?

not sure what the thick ones are called. i heard someone calling it annual root or something. the thin hair roots are called feeder roots. the ones that look like hair comb.. i know what you are talking about, but i haven't heard anyone giving them specific names.