Basil Thyme: A Charming European Herb for North American Gardens
If you’re looking for a low-maintenance, aromatic ground cover that won’t demand much attention, basil thyme (Acinos arvensis) might catch your interest. This petite European herb has quietly made itself at home across much of North America, bringing a delicate beauty and pleasant fragrance to gardens willing to welcome it.
What is Basil Thyme?
Basil thyme is a small, herbaceous plant that belongs to the mint family. Despite its common name, it’s not actually a true thyme, though it does share that characteristic aromatic quality. This annual to short-lived perennial forb grows as a low, spreading plant without any woody stems—think of it as nature’s carpet rather than a shrub.
You might also encounter this plant under several scientific names in older gardening references, including Calamintha acinos or Satureja acinos, but Acinos arvensis is the currently accepted botanical name.
Where Does Basil Thyme Grow?
Originally hailing from Europe and western Asia, basil thyme has established itself across a wide swath of North America. You’ll find it growing in locations from British Columbia to Prince Edward Island in Canada, and throughout much of the northern United States, including states like Connecticut, Idaho, Michigan, Montana, and many others.
This non-native species has proven quite adaptable to North American conditions, reproducing and persisting without human intervention in many areas.
Why Grow Basil Thyme?
There are several reasons why gardeners might appreciate this unassuming little herb:
- Low maintenance: Once established, it requires minimal care and can thrive in poor soils
- Aromatic foliage: The leaves release a pleasant, thyme-like fragrance when brushed or crushed
- Delicate beauty: Tiny white to pale pink flowers create a subtle, naturalized look
- Pollinator friendly: Small flowers attract bees and other beneficial insects
- Drought tolerant: Perfect for dry, sunny spots where other plants struggle
Garden Uses and Design Ideas
Basil thyme works wonderfully in several garden settings:
- Rock gardens: Its low-growing habit and drought tolerance make it ideal for tucking between stones
- Herb gardens: Adds aromatic diversity alongside culinary herbs
- Naturalized areas: Creates a soft, informal ground cover in wild or meadow-style gardens
- Dry slopes: Helps stabilize soil while adding visual interest
Growing Conditions
Basil thyme is refreshingly easy to please:
- Sunlight: Thrives in full sun locations
- Soil: Prefers well-drained soils and actually performs better in poor to average conditions
- pH: Tolerates alkaline soils well
- Hardiness: Generally hardy in USDA zones 3-8
- Water: Drought tolerant once established; avoid overwatering
Planting and Care Tips
Growing basil thyme is wonderfully straightforward:
- Sow seeds directly in the garden in spring after the last frost
- Seeds are tiny, so scatter them lightly and barely cover with soil
- Keep soil moderately moist until germination occurs
- Once established, water only during extended dry periods
- No fertilizing necessary—this plant actually prefers lean conditions
- Allow some plants to self-seed for natural regeneration
A Word About Native Alternatives
While basil thyme isn’t considered invasive, gardeners interested in supporting local ecosystems might consider native alternatives that provide similar benefits. Depending on your region, native options like wild bergamot (Monarda species), native mints (Mentha arvensis), or local thyme species might offer comparable aromatic qualities and pollinator benefits while supporting native wildlife more effectively.
The Bottom Line
Basil thyme offers an easy-care option for gardeners seeking aromatic ground cover in sunny, dry locations. While it’s not native to North America, it’s not considered problematic either. Whether you choose to grow it or opt for native alternatives, the key is creating a garden that brings you joy while being mindful of your local ecosystem. This little herb certainly has its charms—just remember that sometimes the most beautiful gardens are those that celebrate the plants that naturally belong in our neighborhoods.
