Durham, NC arborvitae (planted 2004) dropping green needles after new mulch application during hot, dry period.
Non-organic mulch (rock, rubber) reflects heat, causing wilting. Organic mulch >3 inches deep or piled on trunk also causes problems.
Remove non-organic mulch immediately. Ensure organic mulch ≤3 inches, not touching trunk. Water deeply: 1 inch every 3rd day for a week, then weekly (pan method).
Arborvitae 'Green Giant' Interior Browning: Likely Shading, But Get Extension Diagnosis
Key Lime Seasonal Leaf Drop and Leafminer: Normal Cycle and Organic Management
Green Giant Arborvitae in Partial Shade: Will They Work?
Winter-Damaged 'Red Beauty' Hollies: Will They Recover?
Mulching a Wildflower Meadow for Moisture Conservation and Reseeding
Leaves Dropping at Base: Need Plant ID and Clarification
Hibiscus Leaves Turning White: Variegation or Root-Bound Stress?
Green Giant Arborvitae for Shade Under Loblolly Pines
Sudden Leaf Drop on Healthy Rose: Root Zone Investigation
Miniature Rose Leaf Drop: Reaction to Spraying and Transplant Shock
Crimson Maple Leaf Scorch After Frost and Drought in Nova Scotia
Why Your Mature Magnolia Drops Excessive Leaves in Spring
Understanding Normal Leaf Drop in Magnolia Trees
Green vs. Purple Leaf Backs on Same African Violet: Maturity Difference
Copyright © www.100flowers.win Botanic Garden All Rights Reserved