A year ago got 2 U. Pectinifera. One growing well, but the other shrinking and not growing. Decided to check the roots, roots not good. Reason of not growing. Need to re grow new roots.
Re grow roots test date 17Aug2017.
The setup water culture method.
Some water in the glass container. Clean roots. Any pvc cut round with a hole in the center big enough for the roots to go through.
And place the cap on the glass container mouth. And wait.
Today 25Aug2017, decided to check, wow roots and roots hairs grown. Will leave it there until more roots are established.
Actually roots hairs are the one that take in nutrients. Another cactus saved.
Hope this help growers with similar problems