Herb · Amaranthaceae
Epazote
Dysphania ambrosioides
Hand it lean soil and full sun, keep pinching, and epazote pays you back with that one-of-a-kind Mexican kitchen flavor all season long.
Full sun
Every 3–7 days
50–86°F · 10–30°C
60–80 days
Overview
Ever wonder what gives a pot of black beans that unmistakable Mexican taste? A lot of the time it's epazote, the pungent green doing the heavy lifting. It's a cousin of amaranth and spinach, and it grows wild across much of the Americas as a fast, weedy annual. Tuck one plant into a sunny corner and you've got all the leaf a kitchen could want.
Honestly, it barely asks for a thing. Full sun, poor soil, and a drink or two early on are all it needs, and once it settles in it shrugs off dry stretches that would knock out fussier herbs. Here's the catch, though: leave the flowers to ripen and epazote self-sows everywhere, which is why most gardeners treat it as an annual and stay on top of cutting the spikes back.
There's one real caution worth flagging right away. A small amount of leaf is a kitchen herb, the way it's been used for generations, but it carries an essential oil called ascaridole that turns toxic in quantity. So cook with a pinch, never a handful, and steer clear of the concentrated oil completely.
Care
The short version: full sun, lean and well-drained soil, and steady water only while the plant's young. Pinch the tips for a bushy shape, keep the feeding light, and clip the flower spikes before they go to seed.
Light
Epazote loves full sun, and the more it gets the better, though it'll put up with a touch of afternoon shade. Bright light is what packs in those aromatic oils, so a plant baking in the sun ends up tasting sharper than one coddled in the shade.
Water
Keep the soil evenly moist while plants are young and getting rooted, watering every few days. Once it's settled in, epazote gets pretty drought tolerant and would much rather run dry than sit soggy, so back off and let the top of the soil dry out between drinks.
Soil
Give it well-draining loam, though honestly it's happy in poor, dry ground that would stump other herbs. A pH of 6.0 to 7.5 works nicely, and lean soil actually sharpens the flavor, while rich beds water it down.
Temperature
Warmth is what epazote loves, and it does best between 50°F and 86°F (10°C to 30°C). It's got no patience for frost, so hold off setting plants outside until the cold has truly cleared.
Humidity
Plain outdoor air is all it wants, and 40% to 60% humidity does the trick. There's no number to fuss over here, just give plants some elbow room so air moves freely and the leaves dry off quickly.
Feeding
Feed it lightly, or honestly not at all. One spring dose of balanced fertilizer covers it, and overfeeding backfires, growing a lush, leggy plant whose leaves lose the very punch you're growing epazote for.
Pruning
Pinch the growing tips regularly to keep the plant bushy and to harvest as you go. Just as key, cut the flower spikes the second they appear, which slows the bolting and heads off all that self-seeding before it gets started.
Repotting
Container plants are usually treated as annuals and repotted each year. Keep an eye out for roots circling the pot or pushing through the drainage holes, plus stunted growth and soil that dries out fast, all signs the plant has outgrown its home.
Size & spacing
Plants get to 2 to 4 feet (60 to 120 cm) tall and spread roughly 12 to 24 inches (30 to 60 cm) across. Give each one that kind of space so air can move through and the bushy growth has room to fill out.
When to plant
Epazote loves warmth and has zero tolerance for frost. You can start seeds indoors in late winter or sow them straight into warm spring soil, harvest leaves right through the warm season, and cut the flower spikes in summer before they scatter seed.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: 6-8 weeks before the last expected frost
- Plant: after all danger of frost has passed and soil has warmed
- Harvest: Harvest young leaves and tender stems through the warm season; small green flowers form in summer and should be deadheaded to prevent aggressive self-seeding.
Hardiness
USDA hardiness zones: 8–11
Temperature: down to -12°C
Troubleshooting
Epazote rarely causes a gardener much trouble, and the handful of issues that do crop up are easy enough to spot. Keep an eye on the stems, the seedheads, and the leaves, and you can jump in before a small thing turns into a chore. Find what matches below, then act while it still does some good.
A whole carpet of volunteer seedlings come spring
That is prolific self-seeding, what you get for letting the flowers ripen. Just one plant that goes to seed flings out thousands, and they pop up far past where you ever planted. Want to stay ahead of it? Trim the flower spikes before the seed ripens, tug stray seedlings while they are tiny, and keep any seedy clippings well away from the compost.
Fix:
- Pull or hoe volunteer seedlings while small
- Deadhead and remove flower spikes before seed set
Why your tall stems keep flopping and snapping
When the growth turns floppy and leggy, the soil is usually too rich for it. All that nitrogen drives up thin, top-heavy stems that lean and break, and forgetting the early pinch only adds to the problem. So plant epazote in poor ground, ease right off the feeding, and pinch those tips while the plant is young so it branches down low and holds itself up.
Fix:
- Pinch back growing tips to encourage branching
- Reduce or stop fertilizing
- Stake or space plants to improve support and airflow
Little holes and stippling showing up on the leaves
Speckled, nibbled foliage usually means leaf-feeding insects are around: flea beetles, the occasional caterpillar, or aphids piling onto the fresh growth. Good news is that the strong scent puts off most bugs, so the damage tends to stay minor. Knock aphids off with a sharp jet of water, pick the bigger ones off by hand, and only break out the insecticidal soap if things genuinely get out of hand.
Fix:
- Hose off aphids with a strong stream of water
- Hand-pick larger pests
- Use insecticidal soap if infestation is heavy
Toxicity
Epazote sits in a funny spot: a kitchen herb for people, yet a plant to keep clear of animals. In small culinary amounts the leaf is safe for people and has been used that way for generations, but pile it on and the ascaridole turns toxic, while the distilled essential oil is genuinely poisonous. So treat the foliage as a caution for cats, dogs, horses, rabbits, livestock, and birds.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds
Safe for
People
Cats Caution
Those fragrant leaves carry ascaridole, so a cat that nibbles them might drool, throw up, or lose interest in food. Better to keep the plant somewhere a curious cat can't reach than to trust the strong smell to do the job.
Dogs Caution
Chew the leaves and a dog can wind up with a sour stomach and loose stools. A tiny nibble usually does little, but a proper mouthful is worth a quick call to the vet.
Horses Caution
Keep horses away from epazote, because the ascaridole in those leaves can upset the gut and leave them dull and uninterested in feed. Fence it off from paddocks and the edges where they graze.
Rabbits Caution
Rabbits run on small, touchy digestive systems, so even a little of that oily foliage can trigger trouble. Just leave it off their plate and offer safe greens instead.
Livestock Caution
Cattle, goats, and sheep that tuck into much of the plant can get a sore stomach from that same essential oil. Most stock steer clear of the pungent leaves anyway, but don't bank on it when forage runs thin.
Birds Caution
All that concentrated ascaridole makes epazote a bad pick around pet birds and backyard poultry, since a small body weight turns a little into plenty. Keep it well away from wherever birds feed.
People Culinary herb, in moderation
Used as a seasoning in small amounts, the way Mexican cooks have done for generations, epazote is fine to eat. It all comes down to dose: a lot of leaf, or far worse the distilled essential oil, can poison you, and pregnant women are advised to skip it entirely.
Use only in small culinary amounts as a seasoning; never consume the concentrated essential oil. Pregnant women are advised to avoid epazote.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
United Kingdom
Animal PoisonLine: 01202 509000 (fee applies)
Australia
Animal Poisons Helpline: 1300 869 738
How to propagate
Epazote ranks among the easiest herbs to get going, and once it has a foothold it pretty much sows the next crop for you.
SeedEasy
Direct-sow after the last frost when soil is warm, or start indoors 6-8 weeks before last frost. · Germinates in roughly 1-2 weeks and establishes within several weeks; self-sows readily once established.
Starting epazote from seed couldn't be much easier. Begin it indoors 6 to 8 weeks before your last frost, or just scatter it right in the garden once the soil warms, pressing those tiny seeds onto the surface or barely covering them since they need light to wake up. Sprouts show in about 1 to 2 weeks and fill out over the weeks that follow, and once a plant gets comfortable it self-sows so freely that you'll rarely have to sow again.
Myths
Epazote is a harmless culinary herb you can eat freely in any amount.
A pinch of leaf stirred into a pot of beans is fine, and cooks have done exactly that for generations. The thing is, the plant holds ascaridole, and large amounts or the distilled essential oil are genuinely poisonous. Pregnant women are advised to leave it out altogether.
Epazote stays neatly where you plant it.
Let it flower and it tosses seed in every direction, turning weedy fast and coming up well past the bed where it began. Want to keep it in check? Snip the flower spikes before the seed sets.