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Olea europaea
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- Planting an Olive Tree: Drainage, Spacing and a Second Tree for Fruit
- How to Prune an Olive Tree: Cut for Light, Air and Next Year's Fruit
- Olive Tree Care: Why a Warm, Sheltered Tree Never Sets Fruit
- Olive Tree Year: What to Do Each Season From Chill to Curing
- Olive Tree Problems: Gray Leaves, Sudden Dieback and Fruit With Holes
- When to Pick Olives, and Why You Cannot Eat Them Off the Tree
Common problems
Start from what you can see on the plant.
Pests and diseases (15)
Problems recorded for this plant, most serious first.
Scale Insects
MajorPest
Small white or brown shell-like insects dot the shoots and leaves. The plant loses vigor and honeydew-fed sooty mold blackens the shoots and foliage.
Longhorn Beetles
MajorPest
Sawdust-like frass is pushed out at the trunk base or branch crotches. The wood is hollowed out, the tree loses vigor, and the trunk may snap in strong wind.
Anthracnose
MajorDisease
Light brown to dark brown round lesions with sharp margins form on leaves and fruit, slightly sunken in the center. In wet weather salmon-pink slimy spore masses ooze out on the lesions.
Crown Gall
CommonDisease
Irregular galls form at the crown and on the roots, gradually enlarging and turning woody. They block the flow of water and nutrients, so the plant loses vigor and may die.
Leafrollers
CommonPest
Leaves are webbed into tubes or folded in half, with a green or brown caterpillar inside. Shoot tips and fruit surfaces are also gnawed, disrupting growth.
