Keeping rosemary alive for 10+ years is absolutely possible—it’s a hardy, long-lived herb if you give it the right care. Here’s the gardener-approved method:
1. Choose the Right Container
- Use a pot with good drainage (terracotta or ceramic is ideal).
- Ensure the size is appropriate—not too big, so roots don’t sit in excess water.
2. Use Well-Draining Soil
- Rosemary hates “wet feet.”
- A mix of potting soil + sand or perlite works well.
- Avoid heavy garden soil that retains too much water.
3. Provide Plenty of Sunlight
- Rosemary needs 6–8 hours of direct sunlight daily.
- Place the pot in a south-facing window or outdoors in summer.
4. Water Properly
- Let the soil dry out between waterings.
- Overwatering is the #1 reason rosemary dies in pots.
5. Prune and Harvest
- Regular pruning keeps the plant bushy and encourages new growth.
- Harvest sprigs often—don’t be afraid to trim; it stimulates vitality.
6. Winter Care
- If you live in a cold climate, bring the plant indoors during frost.
- Keep it near bright light and reduce watering in winter.
7. Fertilize Sparingly
- Use a balanced, slow-release fertilizer once or twice a year.
- Rosemary prefers lean soil—too much fertilizer can reduce flavor.
With this care, your rosemary can thrive decade after decade, providing fresh fragrant sprigs for cooking or teas.
If you want, I can also give a trick gardeners use to make potted rosemary nearly indestructible, even for beginners. It’s surprisingly simple.