Herbs (general) care guide
Pets and children
Caution advised
Chives and other onion relatives are toxic to dogs and cats, and mint, oregano, and lavender can cause vomiting or diarrhea in quantity; keep herbs out of reach and consult a veterinarian (or a doctor, for a child) if eaten.
How often to water Herbs (general)
- Spring–Summer (Mar–Sep)
- Every 2 days
- Most are watered thoroughly once the topsoil is dry, as a guide; dry-loving rosemary and thyme can wait a day or two longer, while basil and mint should not dry out.
- Autumn (Oct–Nov)
- Every 3 days
- As it cools the soil dries more slowly, so water once it is dry, as a guide.
- Winter (Dec–Feb)
- Every 7 days
- Growth slows in winter: outdoor perennials get a sparing watering a few days after the soil dries, as a guide, and indoor herbs are watered by feel.
Light and placement for Herbs (general)
Generally herbs want sun and moving air, at least half a day of direct sun outdoors as a guide; mint, parsley, and lemon balm manage in part shade, while Mediterranean types lose fragrance in low light.
Overwintering Herbs (general)
Overwintering guide: 5°C (41°F) or above
Hardiness varies widely: rosemary, thyme, and mint generally overwinter outdoors, while basil and lemongrass, as a guide, come indoors below about 10°C or are treated as annuals.
Fertilizing and repotting Herbs (general)
Fertilizer
Feed lightly: a little slow-release fertilizer or diluted liquid feed about twice a month in spring and fall, as a guide; overfeeding weakens the aroma, and none in midsummer or midwinter.
When to repot
Spring–Summer (Mar–Sep), Autumn (Oct–Nov)
Common problems with Herbs (general)
- In the rainy season and summer, poor airflow lets the plant rot from the inside out.
- Dry-loving types are overwatered and the roots rot.
- Left unharvested, the plant flowers and the leaves turn tough and less fragrant.
Tips for growing Herbs (general)
- Keep dry-loving and moisture-loving herbs in separate pots and spots.
- Frequent picking encourages side shoots and a bushier plant.
- Cutting back before the rainy season improves airflow and helps the plant through summer.
These are AI-generated general guidelines. They vary with the variety, the placement and the pot size. For effects on pets or children, consult a veterinarian or a doctor.
Keep your plant log going
Greenery is a free app that keeps your plant care going, with watering reminders and photo records. Available on iOS and Android.
