Perennial herbs are easy to grow and will come back year after year, giving you a long lasting supply of your favorite herbs.
Some herbs are only perennials in warm climates but they can be planted in pots and moved indoors over winter in cool climates.
Here are 12 low maintenance perennial herbs to plant in your garden. Most of these herbs can be dried or frozen for later use.
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12 PERENNIAL HERBS FOR YOUR HERB GARDEN
1. Mint (Mentha piperita)
Mint is one of the easiest perennial herbs to grow, but it can become invasive, so it’s a good idea to grow it in a pot to keep it contained or cut it back after flowering.
I planted mint in my backyard many years ago and it’s still thriving, despite heavy frosts, being mowed down by the lawnmower and generally neglected.
Mint will grow in full sun or partial shade and the leaves can be picked off as you need them.
2. Rosemary (Salvia rosmarinus)
Rosemary has leaves that look similar to pine needles and small blue flowers.
You can cut sprigs of rosemary throughout the year as required and the flowers are also edible.
Rosemary is cold hardy in areas with mild winters but it can also be grown in cold climates if it’s brought indoors over winter.
Rosemary should be cut back after flowering to avoid it becoming woody.
3. Echinacea (Echinacea purpurea)
Echinacea (Purple Coneflower) is one of my favorite perennial herbs and it’s very easy to grow.
The flower stalks can grow as high as 5 feet (1.5 metres) tall and bloom from summer to early fall. 
Echinacea grows well in full sun and is mostly free of pests and diseases.
The leaves and roots can be dried and used to make herbal tea, decoctions and tinctures.
4. Chives (Allium schoenoprasum)
Chives are part of the onion family and have a mild onion flavor. The flowers are also edible and can be added to salads.
They’re easy to start from seed and grow fast to form a clump, which will need to be divided every few years.
Chives can also be grown indoors on your kitchen windowsill where you can snip off a few leaves and add them to omelettes, mashed potatoes or soups.
5. Lavender (Lavendula)
Lavender is one of the prettiest and most fragrant perennial herbs.
English Lavender is best suited to cool climates, but other varieties of Lavender will tolerate hot temperatures and humidity.
Lavender can be grown from seeds or cuttings and when it’s ready to harvest it can be used to make flower arrangements or dried to make tea, essential oils or lavender sachets.
6. Oregano (Origanum vulgare)
Oregano is part of the mint family and it’s a Mediterranean herb, so it grows best in warm sunny climates.
The stems can be snipped off and the leaves added to sauces or soups.
Oregano should be cut back in fall and covered with thick mulch to protect the plant from frost and snow over winter.
It can also be grown indoors from seeds or cuttings.
7. Lemon Balm (Melissa officinalis)
Lemon Balm is similar in appearance to mint, with lemon scented leaves and small white flowers.
It can reach 1 to 3 feet (30 to 90 cm) tall and spread out to 3 feet (90 cm) wide.
To avoid Lemon Balm becoming invasive, remove the flowers when they first appear so that the seeds can’t spread.
Lemon Balm is commonly used to make a refreshing tea and it can also add a lemony flavor to recipes.
8. Sage (Salvia officinalis)
Sage is another popular perennial herb that is often added to sausages and meat dishes.
In warm areas with mild winters, sage will grow as a perennial but in cool climates it’s grown as an annual.
Sage can be cut back after flowering and covered with mulch to help it survive the winter months.
Pruning also prevents the plant becoming woody and encourages new growth.
9. Chamomile (Matricaria recutita)
Chamomile is an easy to grow perennial herb with beautiful daisy like flowers.
It’s drought tolerant and will grow in full sun or partial shade.
Once Chamomile plants are established in your garden, they need very little ongoing maintenance.
Chamomile flowers can be dried and used to make herbal tea.
10. Thyme (Thymus vulgaris)
Thyme is a fast growing perennial herb that can be used as a ground cover.
It grows best in full sun and can reach 15 inches (38 cm) in height. 
Thyme doesn’t like overly wet or waterlogged soil, so it needs to be planted in soil with good drainage.
Thyme is often added to meat, tomato or pasta dishes.
11. Lemongrass (Cymbopogon citratus)
Lemongrass is popular in Asian cuisine and has a citrus flavor that works well in stir fries and soups.
It’s a sub-tropical plant that doesn’t tolerate freezing temperatures, so if you live in a cool climate it’s best to grow it in a pot and bring it indoors over winter.
Lemongrass can be grown from seed or by dividing a clump. It also roots well in water.
12. Catnip (Nepeta cataria)
Catnip is best known for having a euphoric or calming effect on cats but it can also be consumed as a tea.
It grows 3 to 4 feet (90 to 120 cm) high and can easily spread and take over the garden if it’s left to grow out of control.
If you plant catnip you’re likely to have lots of neighbourhood cats visiting your yard, so you may want to grow it in a pot indoors.
So there are 12 easy to grow perennial herbs that you can add to your herb garden.