Shoots appear more or less at random
on the surface, produced adventitiously.

Is there anything I can use to encourage the formation of shoots on a fleshy
root, such as elm, Ficus, or Crataegus? I need to make some root cuttings from
my hawthorn tree, as it doesn't root from branch cuttings. And the usual
tonics, like Superthrive, are to encourage root growth.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"When you come to a fork in the road, take it." Yogi Berra