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Vaccinium spp.
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- Blueberry Soil pH: How to Acidify Soil and Fix Yellow Leaves
- How to Plant Blueberries: Bed Preparation, Spacing and Depth
- How to Prune Blueberries: Which Canes to Cut and When
- Watering Blueberries: How Much, How Often and Reading the Leaves
- Blueberry Growing Calendar: What to Do Season by Season
- When to Pick Blueberries: Judging Ripeness and Getting the Sugar Up
Common problems
Start from what you can see on the plant.
Pests and diseases (27)
Problems recorded for this plant, most serious first.
Iron Deficiency
MajorDisorder
Yellow-white interveinal chlorosis begins on the new leaves with only the veins staying green. In severe cases the new leaves bleach entirely white and growth stops.
Scale Insects
CommonPest
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.
Waterlogging Root Decay
CommonDisorder
The plant wilts even though the soil never dries, and the lower leaves yellow. Pull it up and the roots have turned brown to black with a distinctive rotten smell.
Longhorn Beetles
CommonPest
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.
Scarab Grubs
CommonPest
The plant wilts despite watering and growth halts abruptly. Lift the plant and there are almost no roots; dig into the soil and white C-shaped grubs appear.
Root Bound
CommonDisorder
Leaves wilt even right after watering and roots push out of the drainage holes. Water runs off the surface instead of soaking in, foliage pales and growth stops.
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.
