My grissilinia hedge was badly dmged by frost, but is showing signs of life now. I have pruned all the dead wood. I now have 1/2 hedge with spindly limbs, & the other 1/2 is cut down to the ground as new shoots are coming. Should i leave these long spindly (but healthy) limbs, & wait for the new shoots to “catchup” or cut them back too …ie start the hedge from scratch?