Can rosemary, thyme, and basil coexist?
Written by
Michael Sullivan
Reviewed by
Prof. Charles Hartman, Ph.D.Rosemary and thyme both originated from the Mediterranean, and their histories make them a natural partner. Both grow well in dry soil and full sun. Basil, on the other hand, absolutely loves to be watered frequently and thrives in rich soil. So when I tried to grow them together, I thought they would perform similarly well. The basil eventually struggled while the rosemary thrived.
The primary issue is a conflict over water. Rosemary is growing in perpetually wet soil, which is causing root rot in the plant. Conversely, basil tends to wilt in hotter and drier conditions with herbs from the Mediterranean. I even lost basil plants that were growing next door to rosemary after a hot week. This plant is not competing for the same conditions, and the roots compete too, in earnest, for resources.
Container Solutions
- Plant rosemary/thyme together in terracotta pots
- Grow basil separately in plastic containers
- Elevate pots for better drainage control
Garden Layout Alternatives
- Group basil with parsley in moisture-rich beds
- Place rosemary/thyme in sandy, elevated sections
- Create separate irrigation zones
Compatible Basil Partners
- Parsley: shares moisture needs
- Oregano: similar sun requirements
- Tomatoes: mutual pest protection
Soil amendments help create microenvironments. For the rosemary/thyme zones, I add sand to aid with drainage. For the basil sections, I mix in compost to hold moisture. The soil zones in my raised beds are distinct and well-defined. This allows all herbs to flourish.
Using substitutes will yield better results than forcing incompatible combinations. For instance, rosemary is very compatible with lavender and sage, while basil has a complementary relationship with tomatoes and parsley. I use rosemary on bordering areas of the garden and place basil near plentiful water sources. You will achieve better harvest results if you learn to expand your plants' root systems.
Observation methods provide insight into early signs of stress. Inspect basil for wilting of leaves near rosemary. Check for rosemary leaves yellowing in wet areas. During the summer months, I check the plants every three days. Your modifications prevent damaging plants.
Container gardening is the ideal option for bringing the above three things together. Plant each in its own pot, but keep the pots together visually. You can water them separately according to their individual needs. I have all three on the patio in styled pots. You can share the look and beauty without sacrificing your health.
Read the full article: 16 Herb Companion Planting Pairs Revealed
