American Black Nightshade
✓ Edible
✓ Medicinal
Solanum americanum
Plant Family: Solanaceae (Nightshade Family)
Other Names
Common Nightshade, Black Nightshade, Small-flowered Nightshade, Glossy Nightshade — Spanish: Yerba Mora, Hierba Mora, Tomatillo Negro — Nightshade Complex also includes Solanum douglasii (Douglas Nightshade — common in Southwest Arizona)
✓ None
⚠ High
⚠ Moderate
⚠ Low
Berries — RIPE ONLY (fully black, soft), Leaves (cooked — see cautions)
Edible Parts
How to Identify
American Black Nightshade is one of the most common weedy plants in Arizona — growing in yards, gardens, roadsides, disturbed ground, and desert washes with equal ease. Knowing it is both practically useful and essential for safety given the toxicity of its unripe fruit.
Size & Form: A herbaceous annual or short-lived perennial, typically 1–3 feet tall with upright, branching stems. Soft and non-woody. Often sprawling under favorable conditions. The stems are green to slightly purplish — smooth or lightly hairy.
Leaves: Alternate, roughly oval to diamond-shaped, 1–3 inches long. Margins are irregularly toothed to wavy — teeth are large and blunt. Leaves are soft, slightly sticky, and strongly aromatic when crushed — a pungent, slightly unpleasant smell. The texture is reminiscent of a tomato plant leaf — which makes sense given they are close relatives.
Flowers: Small, white, star-shaped with five petals and a prominent yellow cone of anthers at the center — exactly like a miniature tomato flower. Flowers appear in small clusters of 3–8 blooms on short stalks arising from the stem between leaf nodes. Bloom period is summer through fall — nearly year-round in frost-free Arizona lowlands.
Berries — The Critical Identification Feature: The berries go through a color progression that is the single most important thing to understand about this plant:
Green — immature, toxic, do not eat
Translucent/pale purple — partially ripe, still toxic, do not eat
Fully shiny black, soft — fully ripe, edible
Ripe berries are pea-sized to slightly smaller, clustered in groups of 3–8, and glossy black with a shiny surface. They yield clearly to light pressure. The interior contains numerous small flat seeds in a juicy pulp — exactly like a tiny tomato. Unripe green berries are firm, dull, and smaller.
Milky or Clear Sap: Break a stem — the sap is clear to slightly sticky. No milky latex like Dandelion.
The Most Important Rule: If the berry is not fully, completely, unmistakably black and soft — do not eat it. There is no middle ground with this plant.
Distinguishing from Deadly Nightshade (Atropa belladonna): True Deadly Nightshade is rare in Arizona and looks quite different — larger plant, larger dull purple-black berries, and large bell-shaped flowers. American Black Nightshade has small white star-shaped flowers and small shiny black berries in clusters. Deadly Nightshade berries are solitary, not in clusters. If in doubt, do not eat.
Where and When to Gather
Grassland
Desert
Forest
Habitat: Highly adaptable — found in disturbed ground, roadsides, gardens, yards, desert washes, riparian areas, agricultural edges, and canyon floors. One of the most common volunteer weeds in Arizona lowland gardens and yards. Thrives in disturbed soil with some moisture.
Elevation: Sea level to approximately 6,000 feet in Arizona. Most common and abundant at lower elevations in the Sonoran Desert zone — below 4,000 feet.
Range in Arizona: Statewide — extremely common across Maricopa, Pima, Pinal, Yavapai, Yuma, La Paz, and Mohave counties. Found growing spontaneously in yards and gardens throughout the Phoenix, Tucson, and Verde Valley areas. Common along the Salt River Canyon and Roosevelt Lake corridor at lower elevations.
When to Gather:
Ripe berries: Late summer through fall — peak harvest August through October following monsoon rains. In frost-free lowland Arizona plants may produce year-round.
Leaves: Spring and early summer — young leaves before full heat of summer for cooked preparations.
Always gather only fully ripe black berries. Never gather green berries regardless of season.
Elevation Range: Sea level to 6,000 feet in Arizona
Seasons
Dry Summer
Wet Summer
Fall
✓ Seen / Harvested
Currently growing in the my yard (2026) — showed up uninvited as this plant commonly does in disturbed garden soil. Also seen at Roosevelt Lake in May 2024 at the lower desert elevation of the Salt River Canyon corridor. The May Roosevelt Lake timing would have caught the plant in flower or with unripe green berries — the ripe black harvest window at that elevation is late summer through fall. The yard plant is the perfect opportunity to observe the full berry ripening cycle from green through black without making a trip — a living demonstration of exactly why ripeness matters with this plant.
How to Gather
⚠️ Ripeness is everything with this plant. Inspect every berry individually before harvesting. Do not harvest clusters that contain any green or partially ripe berries — the risk of accidentally including an unripe berry is not worth it.
Berries:
Select only fully, completely black berries — shiny, soft, and yielding to light pressure
Pick individual berries by hand — do not strip whole clusters unless every berry in the cluster is fully ripe
Place in a small container — berries are soft and crush easily
Rinse thoroughly before use
Use fresh or process quickly — ripe berries do not keep long at room temperature
Refrigerate and use within 2–3 days of harvest
Leaves:
Gather young spring leaves — smaller, more tender, less bitter
Boil in at least two changes of water before eating — this reduces solanine content
Never eat leaves raw
HOW TO USE
Edible Uses
American Black Nightshade has been eaten by cultures across North America, Africa, Asia, and Europe for centuries. The worldwide tradition of eating these berries when fully ripe is well documented — it is the Western assumption of universal toxicity that is the outlier, not the tradition of eating them.
Ripe Berries — Raw: Fully ripe black berries eaten fresh — mildly sweet, slightly earthy, faintly reminiscent of blueberry with a hint of tomato. The flavor is subtle and pleasant when fully ripe. Small size means you need a quantity to make a meaningful snack. Best eaten in moderation.
Ripe Berries — Cooked: The berries improve with cooking — heat reduces any residual bitterness and concentrates flavor. Used in pies, jams, and sauces across multiple traditional food cultures. In parts of the American South and Midwest, Black Nightshade berry pies have a long history. In Africa and Asia the berries are a valued cooked fruit.
Leaves — Cooked Only: Young leaves boiled in two changes of water are eaten as cooked greens in many cultures — particularly in Africa, India, and parts of Latin America. The leaves are nutritious — similar nutrient profile to spinach. Never eaten raw.
Medicinal Uses
American Black Nightshade has a long documented medicinal history across multiple cultural traditions — primarily topical and anti-inflammatory applications rather than internal use.
Active Compounds: Solanine and solamargine (glycoalkaloids — toxic raw, reduced by ripening and cooking), steroidal saponins, flavonoids, tannins.
Anti-inflammatory / Skin: The primary traditional medicinal use — leaf poultice or juice applied topically for skin inflammation, rashes, burns, sores, and swellings. Documented across Native American, Ayurvedic, and traditional African medicine traditions.
Fever Reduction: Leaf tea used traditionally for fever in multiple cultures — the alkaloids have mild antipyretic properties. Not recommended for internal use without qualified guidance.
Liver Support: Used in Ayurvedic medicine as a liver tonic and hepatoprotective agent. Some modern research has investigated Solanum nigrum complex extracts for liver-protective properties.
Topical Pain Relief: Crushed leaves applied to headache, joint pain, and sore muscles in traditional practice.
Antifungal / Antimicrobial: Leaf extracts have shown antifungal and antimicrobial activity in laboratory studies — supporting traditional use for skin infections and wound healing.
Native American Uses
Young stems and leaves or fully ripened fruit of various species are cooked and eaten by native people in North America, Africa, and Asia. The Solanum nigrum complex — which includes Solanum americanum — has documented food and medicinal use across multiple Native American nations.
O'odham and Southwest Peoples: Berries eaten fresh when fully ripe. Leaves used medicinally as a topical poultice for skin conditions, swellings, and inflammation. A plant encountered regularly in disturbed ground around settlements and agricultural areas.
Widespread Topical Use: Across numerous Native American nations the crushed leaves were applied topically for skin conditions, burns, insect stings, and headaches. The anti-inflammatory compounds in the leaves made this a reliable and accessible remedy wherever the plant grew.
Food Use Across Cultures: Beyond Native American use — Black Nightshade berries have been eaten in traditional European cuisine (particularly Eastern Europe), throughout Africa where the plant is cultivated as a vegetable, across South and Southeast Asia, and in Mexico and Central America. The worldwide distribution of this food use is the strongest argument against the universal toxicity assumption.
How to Prepare | Recipes
Ripe Berry Jam
Gather fully ripe black berries only — inspect every berry, discard any that are not completely black and soft
Rinse thoroughly
Combine 2 cups ripe berries with ¾ cup sugar and 1 tablespoon lemon juice in a saucepan
Bring to a gentle boil over medium heat — mash berries as they cook
Simmer 15–20 minutes until thickened — stir frequently
Test for set on a cold plate
Pour into sterilized jars and seal
The flavor is mild, earthy-sweet — similar to a subdued blueberry jam
Ripe Berries with Balsamic Reduction
Gather fully ripe black berries — rinse thoroughly
Combine ½ cup balsamic vinegar with 1 tablespoon honey in a small saucepan
Simmer over medium-low heat until reduced by half and slightly syrupy — about 8 minutes
Add berries — toss gently to coat
Serve over grilled meat, cheese, or as a dessert sauce over vanilla ice cream
The balsamic brings out the earthy-sweet berry flavor beautifully
Cooked Nightshade Greens
Gather young leaves only — spring or early summer
Rinse thoroughly
Bring a pot of water to a boil — add leaves and boil 5 minutes
Drain and discard water — this removes the first round of solanine
Cover with fresh water — bring to a boil again and cook 5 more minutes
Drain and discard water
Sauté drained greens in olive oil with garlic and salt
The double-boiling process is not optional — do not skip it
Cautions
⚠️ THIS PLANT REQUIRES CAREFUL ATTENTION TO RIPENESS. READ BEFORE HARVESTING.
Green and partially ripe berries contain solanine and related glycoalkaloids — genuinely toxic. Green berries have caused serious illness and deaths in children and livestock. The unripe berry toxicity is real and must be respected.
Only fully, completely black, soft, shiny berries are edible. If there is any doubt about ripeness — do not eat.
Never eat leaves raw — always boil in two changes of water before eating cooked greens.
Children are at highest risk from accidental green berry consumption — the green berries can be mistaken for edible plants. Supervise children around this plant.
Caution Level is listed as High not because the ripe berries are dangerous but because the consequences of consuming unripe fruit are serious and the plant is widely misunderstood. Treat this plant with respect and attention.
Not recommended for internal medicinal use without guidance from a qualified herbalist or healthcare provider — the alkaloid profile makes dosage critical.
Do not confuse with Deadly Nightshade (Atropa belladonna) — Deadly Nightshade has larger dull purple-black solitary berries and large bell-shaped flowers, not small white star-shaped flowers and clustered berries.
Harvest only from clean areas — never from treated lawns, roadsides, or agricultural edges where herbicides may have been applied.