Pennyroyal Mentha pulegium

Pennyroyal (Mentha pulegium) is a low-growing herb with a strong minty fragrance. It's often used in traditional medicine and has insect-repelling properties. Here's a guide on how to grow Pennyroyal:

**1. Planting Time:**
- Pennyroyal can be planted in the spring or fall. It's a perennial herb, so once established, it will come back year after year.

**2. Soil Preparation:**
- Pennyroyal prefers well-draining soil with a pH between 6.0 and 7.0. It can tolerate various soil types but thrives in moderately fertile soil. Incorporate organic matter, like compost, to improve soil structure.

**3. Sunlight:**
- Plant Pennyroyal in a location that receives full to partial sunlight. It can tolerate some shade but prefers at least 4-6 hours of sunlight per day.

**4. Propagation:**
- Pennyroyal can be propagated from seeds, cuttings, or division. If growing from seeds, sow them directly in the garden or in containers. If using cuttings or division, spring is an ideal time.

**5. Spacing:**
- Space Pennyroyal plants about 12-18 inches apart to allow for their spreading growth habit.

**6. Watering:**
- Keep the soil consistently moist, especially during the growing season. Once established, Pennyroyal is somewhat drought-tolerant. Water when the top inch of soil feels dry.

**7. Fertilization:**
- Pennyroyal doesn't require heavy fertilization. A balanced, all-purpose fertilizer applied in the spring is usually sufficient.

**8. Mulching:**
- Apply a layer of mulch around the base of Pennyroyal plants to help conserve soil moisture and suppress weeds.

**9. Pruning:**
- Regularly prune Pennyroyal to control its spreading growth and maintain a more compact shape. You can trim it back after flowering to encourage bushier growth.

**10. Companion Planting:**
- Pennyroyal has insect-repelling properties. Consider planting it near vegetables or plants that are susceptible to insect pests.

**11. Harvesting:**
- Harvest Pennyroyal leaves as needed once the plant has reached a sufficient size. The leaves are often used for medicinal purposes or to make herbal teas. Harvest in the morning when the oils are most concentrated.

**12. Winter Care:**
- Pennyroyal is hardy in many climates but may die back in winter. Apply a layer of mulch for added protection. In colder climates, it may be grown as an annual or brought indoors during the winter.

**13. Pests and Diseases:**
- Pennyroyal is generally resistant to pests and diseases. However, it can attract beneficial insects, making it a good addition to a garden.

**Caution:**
- Pennyroyal contains pulegone, which can be toxic in large amounts. Pregnant women and individuals with liver conditions should avoid ingesting Pennyroyal. Consult with a healthcare professional before using Pennyroyal for medicinal purposes.

Growing Pennyroyal can be a delightful addition to your garden, providing both fragrance and potential pest-repelling benefits.