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Brassica oleracea var. italica
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- Broccoli Seedlings: Raising Them and Knowing When to Plant Out
- How to Plant Broccoli: Spacing, Soil Preparation and Firming In
- How to Water and Feed Broccoli for a Solid Central Head
- Broccoli Growing Calendar: Timing the Crop Around Cool Weather
- Broccoli Pests and Problems: Caterpillars, Aphids, Clubroot and Buttoning
- Broccoli Side Shoots: How to Keep Picking After the Main Head
Common problems
Start from what you can see on the plant.
Pests and diseases (25)
Problems recorded for this plant, most serious first.
Cabbage White Caterpillar
MajorPest
Irregular holes appear in the leaves and eventually only the veins remain. Dark green pellets of frass are conspicuous at the crown and on leaf undersides.
Diamondback Moth
MajorPest
Larvae graze the leaf tissue from below, leaving the upper skin as white window-like patches. As they grow they chew many small holes and also attack the growing point.
Black Rot
CommonDisease
V-shaped yellowing spreads inward from the leaf margins and the veins darken into a black network. As it advances the whole plant wilts and dies.
Clubroot
CommonDisease
Leaves wilt during the day and recover morning and evening, and growth is markedly poor. Pull the plant and the roots carry many spindle-shaped or irregular galls.
Cabbage Armyworm
CommonPest
Young larvae feed in groups on the leaf underside, eating only the tissue so the leaf turns translucent white. Larger larvae chew big holes and can strip a plant bare in a single night.
