Saving Waterlogged Arborvitae: Drainage and Recovery

Arborvitae browning from the bottom up after heavy rain signals root suffocation in poorly drained clay.

Immediate Actions

• Dig a shallow trench at the base of the slope to divert runoff.
• Do not add more soil over roots—this worsens drainage.
• If trees are small, lift and replant higher with amended soil.

Assessing Viability

If >30% of foliage is brown, recovery is unlikely. Replace with a more tolerant species (e.g., Eastern red cedar) or improve drainage first.

Long-Term Fix

Amend the entire planting area with compost, create a berm to shed water, and ensure downspouts direct water away.