Varieties of mint (Mentha) are some of the easiest and most popular herbs to grow. Plants in the mint family are very hardy perennials with vigorous growth habits. Mint, left to its own devices, will spread quickly and become a nuisance. However, it is very useful as a flavorful culinary herb and the plants can certainly be grown without much care. Just try to choose a spot where you will not mind the rampant growth or grow it in a confined space like a container or between paved areas.
So, how often to water mint plants? In a nutshell, you should water garden mints once every 1-2 days in summer and once every 2-4 days in autumn, fall and spring. For potted plants(indoor and outdoor), the schedule is to water 1-2 times a day. In winter, both types hardly need any watering.
The partial sun generally means less than six and more than four hours of sun per day. Plants for the partial sun will do well in a location where they receive a break from the sun each day. They like the sun but will not tolerate a full day of it and need at least some shade each day.
Mix the recommended amount of liquid fertilizer and water in a watering can. Then simply pour the mix into the soil as if you're watering the plant.
It is important to never remove more than a third of the foliage in any one year and to cut just above a node on the stem.
Peppermint (Mentha piperita) is very cold hardy able to withstand the cooler temperatures in USDA hardiness zone 3.
As an edible herb, it is non-toxic to humans. However, according to the ASPCA, the essential oils in mint are toxic to dogs, cats, and horses. If a lot is ingested, it can cause vomiting and diarrhea.