Purple dead nettle tea is a simple herbal infusion made by steeping the leaves and flowers of the plant in hot water for 5 to 10 minutes. The whole above-ground part of the plant is edible and safe to use, making it one of the easier wild teas to prepare. Here’s everything you need to know, from identifying the right plant to brewing your first cup.
Identifying Purple Dead Nettle
Before you harvest anything, you need to be sure you’re picking the right plant. Purple dead nettle grows abundantly in lawns, garden edges, and disturbed soil across much of North America and Europe, typically appearing in late winter and early spring. It’s a member of the mint family, which means it has the characteristic square stem you can feel by rolling it between your fingers.
The leaves are triangular with shallow lobes and sit on short stalks (petioles) that connect them to the stem. The upper leaves near the top of the plant take on a distinctive red-to-purple tint, which is the easiest way to spot it from a distance. Small pink-purple tubular flowers cluster between those upper leaves. The plant rarely grows taller than about 8 to 12 inches.
The most common lookalike is henbit, a close relative that’s also edible and non-toxic. You can tell them apart by looking at how the leaves attach to the stem. Henbit leaves connect directly to the stem without a stalk, and they’re rounder with deeper scalloped edges. Henbit also lacks the purple-tinted upper leaves. If you accidentally pick henbit instead, it won’t hurt you, but it does taste slightly different.
Where and When to Harvest
Purple dead nettle thrives in cool weather. In most climates, it’s at its peak from late February through May. You’ll find it growing in patches along fence lines, in garden beds, at the edges of fields, and in any partially shaded spot with moist soil. It sometimes makes a second appearance in fall.
Pick from areas you’re confident haven’t been sprayed with herbicides or pesticides, and avoid roadsides where exhaust fumes settle on the leaves. Your own yard (if untreated), organic farms, and rural meadows are good choices. Snip the top few inches of the plant, which includes the purple-tinted leaves and flowers. These upper portions are the most tender and flavorful. Harvest in the morning after the dew has dried for the cleanest pick.
Drying Purple Dead Nettle for Tea
You can brew tea with fresh leaves, but drying them lets you store a supply for months. To dry, remove the leaves from the stems by hand or by running a sharp knife down each stem. Spread the leaves in a single layer on a dehydrator tray and dry on the lowest setting for 6 to 8 hours. If you don’t have a dehydrator, use a baking sheet in the oven at 175°F or lower for 8 to 10 hours.
You can also air-dry the plants by bundling small bunches together with string and hanging them upside down in a warm, dry room with good airflow. This takes several days to a week depending on humidity. The leaves are ready when they crumble easily between your fingers. Store dried leaves in a sealed glass jar in a cool, dark place. Like most dried herbs, they’ll keep their flavor best if used within about a year.
Brewing the Tea
The basic ratio is 1 tablespoon of dried purple dead nettle leaves per 10 ounces of water. If you’re using fresh leaves, roughly double the amount since fresh plant material contains water weight. Bring your water to a full boil, then remove it from the heat.
Add the leaves to the hot water (a tea infuser, French press, or simple mason jar all work well) and let them steep for 5 to 10 minutes. A shorter steep gives a milder, lighter tea. A longer steep pulls out more of the plant’s compounds and produces a slightly earthier, more robust flavor. Strain out the leaves and pour.
The tea has a mild, slightly grassy taste that’s gentler than many herbal teas. It’s not bitter unless you steep it well past 10 minutes. Many people add honey, lemon, or a slice of fresh ginger to complement the flavor. You can also blend it with other foraged herbs like clover, violet leaves, or bee balm for a more complex cup. For iced tea, brew it at double strength and pour over ice.
What’s in the Cup
Purple dead nettle contains a range of plant compounds that have attracted scientific interest. The plant is rich in flavonoids, which are the same class of antioxidants found in berries and green tea. It also contains compounds in the hydroxycinnamic acid family, which have documented antioxidant and anti-inflammatory properties in lab studies. A comprehensive review published in the journal Molecules noted that plants in the Lamium genus (the botanical group purple dead nettle belongs to) have demonstrated antioxidant, anti-inflammatory, and antimicrobial activity in laboratory testing.
In folk medicine traditions, purple dead nettle tea has been used to soothe seasonal allergy symptoms, support kidney function, and ease mild joint discomfort. The plant also contains allantoin, a compound widely used in skincare for its ability to promote cell regeneration, and rutin, a flavonoid associated with blood vessel health. These traditional uses haven’t been tested in human clinical trials specific to purple dead nettle, so the evidence remains preliminary.
Taste Variations and Recipes
A straight infusion is the simplest approach, but you can experiment with a few variations:
- Honey-lemon purple dead nettle tea: Steep 1 tablespoon dried leaves for 7 minutes, then stir in a teaspoon of raw honey and a squeeze of lemon. The acidity brightens the tea’s mellow flavor.
- Spring forager’s blend: Combine equal parts dried purple dead nettle, dried violet leaves, and dried red clover blossoms. Use 1 tablespoon of the blend per cup.
- Iced purple dead nettle tea: Brew 2 tablespoons of dried leaves in 10 ounces of boiling water for 10 minutes. Strain, add honey while warm, then refrigerate or pour over a full glass of ice.
The flowers are completely edible and add a slightly sweet note, so there’s no need to separate them from the leaves before brewing. Including the purple-tinted upper leaves gives the tea a faint pinkish hue.
Safety Considerations
Purple dead nettle is not a true nettle and does not sting. It has no known toxicity and has been eaten as a wild green and brewed as tea for centuries across Europe. That said, it belongs to the mint family, so if you have a known allergy to plants in that group (which includes basil, rosemary, sage, and lavender), proceed cautiously.
There’s very little formal research on purple dead nettle tea during pregnancy or while breastfeeding, so most herbalists suggest avoiding it during those times simply out of an abundance of caution. If you’re on blood-thinning medications, the rutin content is worth noting since rutin can influence blood vessel function, though the amounts in a cup of tea are quite small. Starting with one cup a day and seeing how your body responds is a reasonable approach for anyone trying it for the first time.