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Prunus armeniaca
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- Planting an Apricot Tree: Choosing a Site That Beats the Frost
- How to Prune an Apricot Tree: Summer Only, and Why Winter Cuts Kill
- Apricot Tree Care: Watering, Feeding, Hand Pollination and Thinning
- Apricot Tree Year: Season by Season Jobs and the Decisions Behind Them
- Apricot Tree Problems: Dieback, Canker, Silver Leaf and Brown Rot
- When Is an Apricot Ripe? How to Pick and Why It Must Ripen on the Tree
Common problems
Start from what you can see on the plant.
Pests and diseases (29)
Problems recorded for this plant, most serious first.
Powdery Mildew
Disease
White patches appear scattered on the upper leaf surface at first, then the whole leaf is coated in a white powder. Leaves later yellow, brown and die back, and reduced photosynthesis cuts growth and yield.
Late Blight
Disease
Dark green water-soaked lesions appear on the leaves and expand quickly into brown dead tissue. White mold forms on the underside and at the lesion edge, and dark brown lesions spread to stems and fruit.
Black Spot
Disease
On roses, dark brown lesions with radiating edges form on the leaves, which yellow around them and drop. On pear, sooty black lesions appear on leaves, fruit and the calyx of young fruit, deforming the fruit.
Crown Gall
Disease
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.
Peach Leaf Curl
Disease
New leaves thicken and pucker into waves and turn red to pale pink. They later bloom with a white powder, brown, and drop, weakening the tree.
Anthracnose
Disease
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.
Brown Rot
Disease
Blossoms brown and die, and round brown lesions on fruit expand rapidly. Grayish white powdery mold forms in concentric rings on the lesion and the fruit finally dries into a hard mummy.
Leaf Spot
Disease
Small round brown to gray-white lesions appear on the lower leaves, the centers turning gray with tiny black specks. As they multiply the leaf yellows and drops early.
Ring Rot
Disease
The bark of branches and trunk becomes rough and warty, serving as the inoculum source. Fruit develops round brown lesions that soften and rot in concentric rings.
