Can you prune a 30 year old tamarisk tree hard back to 4 feet?

Yes, you can hard prune a 30-year-old tamarisk tree back to 4 feet, but it's important to do so carefully. This type of severe pruning can stimulate new growth, but it may also stress the tree. Pruning should ideally be done in late winter or early spring before new growth begins, and be sure to monitor the tree for any signs of disease or stress afterward.