- Author: Ann Edahl
There are hundreds of varieties of mint. The two most common are peppermint (Mentha piperata) and spearmint (Mentha spicata). Peppermint is used mostly for cooking, flavoring, and oils — for example, in gum, soaps and candy. Spearmint is often used fresh, such as in teas, other drinks and sauces (mint sauce, anyone?).
Other mint types that are usually easy to find include apple mint, pineapple mint and chocolate mint. And yes, chocolate mint, a type of peppermint, really does smell like a chocolate mint when you rub a leaf between your fingers!
Mint is a hardy perennial, meaning the plant comes back every year, and it can handle temperatures well below freezing. Depending on the variety, mint plants grow about one- to two-feet tall. They can grow in lots of different types of soil but prefer rich soil. Mint grows in full sun to part shade and needs moderate water. Its ability to thrive in part shade is a plus for many gardeners.
Although mint is often disease and pest free, it can be susceptible to rust and powdery mildew, two diseases caused by fungi. Some insects can also cause damage to mint, including aphids, leafhoppers, thrips, spider mites, mint caterpillar and mint root borer. See the University of California IPM (integrated pest management) mint page, linked below, for more information and tips on controlling these diseases and pests.
How do you grow mint? Mint spreads naturally by runners, by what we call “layering” — where the mint begins rooting where the horizontal stems you see growing above the soil surface touch the soil. You can also grow mint from seed, by dividing the plant and with root cuttings — mint roots in water quite easily and you might even have luck with rooting it by sticking a stem of mint directly into the soil. Which brings us to the biggest point to consider when deciding to grow mint: its tendency to spread easily and fast!
Mint is vigorous and will spread rapidly if there is no physical barrier to stop it. To help prevent mint from becoming a nuisance, the solution is to plant it in a container. The pot should be at least six inches deep, and placing a saucer or some type of paver between the pot and the ground will prevent the mint from eventually escaping through the drainage hole. You will want to give it a good watering when the soil is dry, especially during the heat of the summer. The smaller the pot, the faster the soil will dry out. But even if you wait too long and the mint wilts, chances are it will come back. It is one hearty (and hardy) herb!
Or you can grow mint in the ground but in a large pot buried in the soil. When burying the pot, do not bury it flush with the soil, but make sure to leave a one- to two-inch lip sticking out of the ground. This will help keep the mint contained. Even then, be on the watch for mint runners trying to escape over the lip since it really, really wants to spread! Also, if planting mint in a container in the ground, make sure it's a sturdy pot. Terra cotta is okay but may disintegrate over time. Five-gallon-size paint buckets are the perfect size, deep enough that the roots of the mint cannot easily escape. Be sure to add drainage holes on the bottom if you go this route.
Now that you've planted your mint, you'll soon be ready to harvest! It's best to wait to harvest after the plant has reached three to four inches. Young leaves will have the best flavor although you can harvest at any time. To conserve the flavor in the leaves, pinch off any flowers that form.
And you're set! On our next 100-degree day, go out in the morning, pick some of those mint leaves — spearmint and apple mint are two of my favorites — steep them for a few hours in a pitcher of ice water and get ready to be refreshed!
Read more:
UC IPM. Pests in Gardens and Landscapes: Mint — Mentha ssp.
UCANR Cooperative Extension–Sacramento County. Environmental Horticulture Notes: Culinary Herb Profiles. EHN 70.
Advice for the Home Gardener from the Help Desk of the
UC Master Gardener Program of Contra Costa County
Gardener's Request: Can I plant mint and thyme together? Thank you for your response.
Help Desk Response: Thank you for contacting the UC Master Gardener Program Help Desk.
Mint and thyme are wonderful herbs to have in the garden; both herbs have a lovely scent and their flowers are attractive to many beneficial insects.
Mint is considered a rather aggressive herb; therefore, it is best to plant mint by itself in a pot, not in the ground. You can try to plant both mint and thyme together in a pot; however, please realize over time the mint will probably take over the thyme. Mint and thyme also have different water requirements, thyme requires less water than mint.
Hope the above addresses your question. You can find further information regarding mint and thyme in the links below. Both links reference Sonoma County but the information should apply to Contra Costa County as well (we assumed you live in Contra Costa County).
Mint: http://sonomamg.ucanr.edu/The_Kitchen_Garden/Feature_Vegetables/Mint/
Thyme: http://sonomamg.ucanr.edu/Food_Gardening/Feature_Vegetables/Thyme/
Please let us know if you need further assistance with this or other herb gardening.
Happy Gardening!
Help Desk of the UC Master Gardener Program of Contra Costa County (mlk)
Note: Contra Costa's Help Desk is available almost year-round to answer your gardening questions. Except for a few holidays (e.g., last 2 weeks December), we're open every week, Monday through Thursday for walk-ins from 9:00 am to Noon at 2380 Bisso Lane, Concord, CA 94520. We can also be reached via telephone: (925) 608-6683, email: ccmg@ucanr.edu, or on the web at http://ccmg.ucanr.edu/Ask_Us/. MGCC Blogs can be found at http://ccmg.ignore.edu/HortCoCo/ You can also subscribe to the Biog.