How Long to Wait Before Planting After Roundup Application

After spraying glyphosate (Roundup) on a vine near the house, wait 7–14 days before planting a shrub. Glyphosate binds tightly to soil particles and breaks down via microbial activity; it has no residual pre-emergent act

Designing a Shade Garden in Cleveland, Ohio

A homeowner near Cleveland plans landscaping for a west-facing front yard (partial shade) and a shadier east-facing backyard. The proposed plant list includes dogwood, boxwood, holly, rhododendron, Japanese maple, river

Why Isn't My Dogwood Tree Blooming?

A homeowner in Connecticut planted a pink dogwood three years ago. Although the tree produces flower buds each winter, they never open—leaves emerge instead, and the buds simply drop off. The tree receives full sun, appe

Euonymus Scale and Holly Sooty Mold: Soil Drainage and Air Flow Solutions

Cheryl lost two Euonymus to white scale and a holly to black sooty mold. Asks how to prevent recurrence in the same area. Root Causes Poor drainage creates stress, making plants susceptible to pests/diseases. Poor air

New Hydrangea Wilting and Leaf Scorch: Transplant Shock Recovery

A hydrangea planted 3 weeks ago shows wilting blooms and scorched leaves despite fertilizer and regular watering. The gardener asks whats wrong. Diagnosis: Transplant Shock Common causes: Overwatering: Regular watering

Transplanted Oak Tree with Top Dieback: Assessment and Care

A 15-ft oak transplanted 3 years ago leafed out only on lower 2/3 this spring. Upper third has dead branches. Gardener in zone 5 (NW Missouri) asks if it will recover, prune now, or replace. Oak Transplant Challenges 2

Pruning Evergreen Shrubs in Zone 5: New Growth Timing for Shape and Size Control

Paul in zone 5 has evergreen shrubs with new growth and wants to prune for a rounded shape. Asks best time. Pruning Strategy by Goal Maintain current size: Prune now (spring), removing most new growth (candles). This k

Pruning Japanese Maple in Northern Kentucky: Timing and Technique

Barb in northern KY asks if its okay to prune a 2.5 ft Japanese maple bush now (spring), missed fall pruning. Also wants to know where to cut and how to handle perimeter trimming. Cicada emergence is expected. Pruning T

Killing Buddleia (Butterfly Bush) Roots to Protect Neighbor's Patio

Steve needs to kill a Buddleia davidii whose roots are lifting a neighbors patio. Asks if cutting at ground level suffices or if root treatment is needed. Why Cutting Alone Fails Buddleia resprouts vigorously from the r

Reviving a Leggy Hedge: Light, Pruning, and Species Matters

Lisa has an 8-ft wide hedge under a window. Top is green; front is bare sticks after trimming. She wants to restore it. Cause Self-shading. The top growth blocks light from reaching lower branches. Most hedges need a ta

Substitutes for 'Otto Luyken' Laurel in Richmond, VA

Karen needs alternatives to Otto Luyken cherry laurel for planting in front of Annabelle hydrangeas and under windows. Supplier has difficulty sourcing. Why Otto Luyken? Compact (3–4 ft), glossy evergreen leaves, white

Transplanting Potentilla Near a Salted Road: Survival Tips

C.C. wants to move potentilla shrubs to a sunnier spot 15–20 feet from a salted road. Asks about survival chances and alternatives. Potentilla & Salt Tolerance Potentilla (Cinquefoil) is tough, sun-loving, and moderate

Mock Orange Defoliation: Frost, Wind, or Pests?

Lizs mock orange was nearly stripped of leaves in days. She suspects Japanese beetles but saw none. Expert suggests weather, not pests. Rapid Defoliation Causes Late frost/freeze: Tender new leaves killed and drop. Hig

Cypress Decline in North Carolina: Need for Local Expert Diagnosis

David in Cary, NC has several cypresses turning brown and dying. He provided a photo link (inaccessible). The expert (in Minnesota) is unfamiliar with cypress issues in the Southeast. Recommended Steps Contact your cou

Removing Trunk Wrap from Newly Planted Trees: When and Why

Trees planted last fall have felt wrap on trunks. The gardener asks when to remove it and its purpose. Purpose of Trunk Wrap Shipping protection: Prevents bark damage during transport. Winter protection: Guards against

Pruning Overgrown Variegated Weigela and Arrowwood Viburnum

Marguerite in Chicago cut 50% of her overgrown variegated weigela (lots of dead wood) and wants to cut 4 feet off an arrowwood viburnum blocking a walkway. Shes a novice and fears damage. Weigela Assessment Removing dea

Holly Tree Decline: Yellow Leaves, Gray Mold, and Soil Solutions

Three large hollies (20–35 ft) have yellowing leaves, leaf drop, and grayish bark mold. The gardener seeks treatment. Diagnosis Yellow leaves + leaf drop: Classic signs of root stress—poor drainage, wrong pH, or root r

Hydrangea Flower Form Change: Mophead to Lacecap Explained

A gift hydrangea bloomed as a mophead (all sterile flowers) last year. This year its a lacecap (fertile center, sterile ring). The gardener asks how this happened. Explanation This is a natural variation in Hydrangea ma

Crab Apple Defoliation from Mold: Fungicide Spray — Prevents Repeat

Albany, NY: 17-yr crab apple defoliated last year after cool damp spring — mold on trunk again this spring. Solution Fungicide spray (per label) — controls mold/mildew. Natural cycle — wont kill tree unless repeated ann

Pruning Young Boxwoods for a Tall, Narrow Hedge

A gardener planted boxwoods 6–8 months ago and wants a tall, skinny hedge. Conflicting advice: crop low (5–6 inches) vs. risk of shock. Correct Approach Do not crop low. Thats for rejuvenating old plants, not training