4. Watering: Allow soil to dry out between waterings. Both plants are adapted to dry conditions and can suffer from root rot if kept too wet. Water thoroughly when the top inch of soil feels dry.

5. Humidity: Lavender and rosemary are adapted to lower humidity levels. Indoor environments are generally drier, which is beneficial for these herbs.

6. Pruning: Regularly trim to encourage bushier growth and to harvest leaves for culinary or aromatic use. Pruning also helps maintain a compact shape, especially for lavender.

7. Fertilization: Feed with a balanced, water-soluble fertilizer during the growing season (spring and summer). Follow the recommended dosage on the fertilizer packaging.

8. Container Size: Choose containers with drainage holes that are large enough to accommodate the root systems of these herbs. However, avoid using excessively large pots, as they can lead to overwatering.

9. Pest Management: Keep an eye out for pests like spider mites or aphids. If you notice any issues, address them promptly with insecticidal soap or neem oil.