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Ocimum basilicum
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- How to Grow Basil from Seed: Covering Depth and Soil Warmth
- How to Pinch Basil so It Bushes Out Instead of Bolting
- How to Stop Basil Bolting and When to Let It Flower for Seed
- How Often to Water Basil and When to Feed It
- Basil Growing Calendar: Sowing, Pinching, Picking and Clearing
- How to Harvest Basil and Keep It Fresh
Common problems
Start from what you can see on the plant.
Pests and diseases (14)
Problems recorded for this plant, most serious first.
Spider Mites
MajorPest
Fine white stippling spreads across the upper leaf surface, and the leaf eventually whitens and dies back. In heavy infestations fine webbing appears on leaf undersides and shoot tips.
Downy Mildew
MajorDisease
Pale yellow to yellow-brown angular lesions form on the upper leaf surface with a gray-purple mold in the matching spot underneath. Lesions merge, the leaves die back and the plant declines early.
Cabbage Armyworm
MajorPest
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.
Fusarium Wilt
CommonDisease
Lower leaves wilt during the day and recover morning and evening, and this cycle repeats as the plant dies back. Cutting the stem reveals characteristic browning of the vascular tissue.
Gray Mold
CommonDisease
Water-soaked brown lesions form on flowers, fruit and leaves, densely covered by a fuzzy gray mold. Fruit rots and drops, and decay continues in storage after harvest.
Waterlogging Root Decay
OccasionalDisorder
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.
Etiolation
OccasionalDisorder
Internodes stretch long, stems are thin and leaf color is pale. The plant topples easily and becomes vulnerable to pests and disease.
Fertilizer Burn
OccasionalDisorder
Leaf margins scorch brown soon after fertilizing and the whole plant wilts. Root tips turn brown and growth stops abruptly.
Sclerotinia Rot
Disease
The crown, stem or head rots in a water-soaked way and is covered in white cottony mycelium. Black sclerotia later form inside and on the surface, and the plant wilts and dies.
Root Rot
Disease
Fine roots rot brown to blackish brown, growth stops and the lower leaves yellow. The plant wilts easily in the daytime and eventually dies outright.
