Growth Regulator for Arborvitae: Using Atrimec to Limit Height Near Utility Lines

Can You Chemically Stop Arborvitae Growth?

A homeowner wants to keep arborvitae below utility lines without frequent pruning.

Product: Atrimec

• Mix 1 fl oz per gallon of water.
• Spray entire plant after trimming to shape, leaving at least two pairs of expanded leaves per shoot.
• Apply within 3 days of pruning.
• Two treatments per season typically needed.

Availability

Check local nurseries or garden centers for Atrimec.

Note

Growth regulators reduce elongation but do not replace proper plant selection. For new plantings, choose naturally dwarf cultivars.