Leaf Drop
Sudden or excessive leaf drop can be alarming. It is often a stress response to environmental changes.
考えられる原因
Environmental Shock
Why: Moving a plant to a new location with different light, temperature, or humidity can trigger leaf drop.
Signs to check: Leaf drop began shortly after moving or purchasing the plant, leaves fall while still green.
Overwatering
Why: Excess moisture stresses roots, causing the plant to shed leaves it can no longer support.
Signs to check: Soil is consistently wet, leaves yellow before dropping, lower leaves affected first.
Temperature Drafts
Why: Cold drafts from windows, doors, or air conditioning can cause rapid leaf drop.
Signs to check: Plant is near a door or drafty window, leaf drop is sudden and widespread.
Low Light Adjustment
Why: A plant moved from bright to dim conditions may shed leaves it cannot sustain with less light.
Signs to check: Interior leaves drop, plant was recently moved to a darker spot.
確認ポイント
- 1Note when the leaf drop started and any recent changes
- 2Check soil moisture and drainage
- 3Assess the plant's proximity to drafts or vents
- 4Evaluate whether light levels changed recently
対処法
- Stabilize the plant's environment — avoid further moves
- Adjust watering to match current conditions
- Move away from cold or hot drafts
- Give the plant 2-4 weeks to acclimate before making more changes
- Remove fallen leaves from the soil surface to prevent mold
専門家に相談するタイミング
- All leaves dropping within a few days
- Stems are becoming soft or discolored
- No new growth appears after several weeks of stable conditions
ポイント
Leaf drop is usually a temporary stress response. Stabilize the environment and give the plant time to adjust.
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情報源: RHS, Missouri Botanical Garden. 教育目的で公開されている園芸資料をまとめたコンテンツです。情報源の組織は透明性のためにのみ記載されており、推薦を意味するものではありません。