Drying nettles for tea is straightforward: wash them, spread them out or hang them in bundles, and wait until the leaves are completely crisp. The whole process takes one to two weeks if you air dry, or as little as a few hours in a food dehydrator set to 95°–115°F. Once dried, the stinging hairs lose their bite entirely, leaving you with a mild, earthy tea that’s rich in minerals.
Harvesting and Handling Safely
Stinging nettle leaves are covered in tiny hairs that inject formic acid, histamine, and other irritants into your skin on contact. Wear long sleeves and long rubber kitchen gloves every time you handle fresh nettles, from picking through washing. The sting disappears once the leaves are fully dried or cooked, so your finished tea is completely harmless to drink.
If you’re foraging, clip the top four to six inches of new growth in spring or early summer, when the leaves are most tender. Use scissors or garden shears and drop the cuttings directly into a bag or basket. Avoid plants growing near roadsides or areas that may have been sprayed.
Washing and Prepping the Leaves
Give your nettles a thorough wash before drying. Fill a sink with cold water, dunk batches of nettles in, and swish them around to dislodge dirt, bugs, and any residue. Keep your rubber gloves on for this step. After washing, you need to remove as much surface moisture as possible, since wet leaves invite mold. A salad spinner works well for loose leaves. You can also spread them on a clean towel or drying rack and let them air out until no visible water remains. This pre-drying step is especially important if you plan to bundle and hang them.
Air Drying: Hanging or Flat
You have two options for air drying, and both work well in a warm, dry room with decent airflow.
Hanging bundles: Gather five or six stems together, tie them at the base with twine, and hang them upside down. A kitchen, sunroom, or covered porch all work as long as humidity stays low. The bundles typically take one to two weeks to dry fully.
Flat drying on screens or racks: Strip the leaves from the stems and spread them in a single layer on a wire rack, mesh screen, or baking sheet lined with parchment. A rack with open airflow on all sides is ideal because it prevents moisture from getting trapped underneath. Turn the leaves every day or two so they dry evenly. This method also takes roughly one to two weeks, depending on humidity and room temperature. If any leaves feel leathery rather than crisp after two weeks, your space may be too humid. Move them somewhere warmer or switch to a dehydrator.
Using a Food Dehydrator
A dehydrator cuts the drying time down to hours instead of weeks and gives you more consistent results. Oregon State University Extension recommends setting your dehydrator to 95°–115°F. Spread the leaves in a single layer on each tray, using tongs if you prefer not to handle them with gloves. Check them after four to six hours. The leaves should snap cleanly when bent, not fold.
Keeping the temperature in that low range matters for quality. Research comparing drying methods found that higher heat causes greater losses of vitamin C and beta-carotene, the plant pigment your body converts to vitamin A. Minerals like iron, calcium, and magnesium hold up well regardless of drying method, but the gentler the heat, the more of those heat-sensitive vitamins you preserve.
How to Tell When They’re Done
Properly dried nettle leaves are brittle. They should crumble easily between your fingers with no bendiness or dampness. If any part of the leaf still feels pliable, it retains moisture and will mold in storage. Give those leaves more time. Once everything is crisp, strip the leaves from the stems if you haven’t already and crumble them into smaller pieces for easier storage and brewing.
Storing Dried Nettles
Transfer your dried leaves to airtight containers: glass jars with tight lids, resealable bags with the air pressed out, or tin canisters. Store them in a cool, dark spot. Light and warmth speed up the breakdown of flavor and nutrients. Label each container with the date. Dried nettles are best used within six months. If you want to extend that, move them to the freezer, where they’ll hold up for about a year.
Brewing Nettle Tea
For a quick cup, use about two teaspoons of dried nettle leaves per 250 mL (roughly one cup) of boiling water. Pour the water over the leaves, cover the mug, and steep for 10 to 15 minutes. The flavor is grassy and mild, similar to a light green tea. Strain and drink as is, or add honey or lemon.
For a stronger, more nutrient-dense infusion, pack about 30 grams of dried leaves (roughly one ounce, or a loose cup) into a one-liter glass jar. Fill it with boiling water, seal it, and let it steep for at least eight hours or overnight. This long steep draws out significantly more minerals. The resulting liquid will be darker and more full-bodied. Strain it in the morning and drink it throughout the day, cold or reheated.
What Nettle Tea Does in Your Body
Nettle is a natural diuretic, meaning it increases urine output. This is part of why it has a long history of use for urinary tract support and kidney stone prevention. That same diuretic effect can lower blood pressure. Animal studies using concentrated nettle extract showed blood pressure reductions between 15% and 38%, though those involved injected extracts at doses far beyond what you’d get from a cup of tea. Still, if you already take medication for blood pressure or use other diuretics, nettle tea may amplify those effects. It’s worth being aware of, especially if you’re drinking the concentrated overnight infusion regularly.
The mineral profile is one of the main draws. Nettle leaves contain iron, calcium, magnesium, and potassium, and research confirms that drying does not reduce these mineral levels. You do lose some vitamin C in the drying process (roughly 12% with gentle low-temperature drying, up to 22% with higher-heat oven drying), but the minerals carry through intact.