Toxic

Knitbone — a legendary wound-and-bone poultice whose internal use is no longer defensible.

Cucumber-green and mucilaginous. Not a tea flavor to chase.

Harvest: 60–90 days to a leaf cut (external / compost only)

The bitter of absinthe — a powerful digestive bitter whose essential oil is a neurotoxin in excess.

Silver, resinous, and punishingly bitter. A sip, not a cup.

Harvest: 90–120 days to a silvery harvest

The garden poppy that also yields opium — a beautiful annual whose latex is the source of morphine, codeine, and a century of addiction medicine.

Culinary seed is nutty and bakery-sweet. Latex is not a flavor to seek.

The red fairy-tale mushroom — a deliriant poison with a folk-intoxicant history, not a gentle psychedelic.

Do not taste. Literature describes it as unpleasant and nauseating.

Jimsonweed — a roadside nightshade whose tropane alkaloids cause blind, hot, mad, dry delirium. Not a medicine for home use.

Do not taste. Tropane nightshades are bitter and burning.

Harvest: 70–90 days as an ornamental — do not harvest for medicine

The spotted thimble that became digoxin — a poison-garden teaching plant, not a homegrown heart tonic.

Do not taste. Bitter cardiac glycosides.

Harvest: Bloom in year 2 (~400 days) as an ornamental — never as a drug

Shiny black cherries on a dull purple bell — atropine in botanical form. Not a home medicine.

Do not taste. Sweetish berries are part of why children eat them.

Harvest: Fruit in year 2 as a poison-garden show — never as a drug

Hooded indigo flowers — beautiful, and poisonous to the touch in sap, let alone as a tea.

Do not taste. Immediate tingling is a warning, not a spice.

Harvest: Bloom in year 2 as an ornamental — never as a drug

A freeway-median flower whose leaves can stop a heart — including as a 'tea' in folklore that should have died.

Do not taste.

Harvest: Ornamental bloom in 1–2 years — never as a drug

Socrates' cup — a purple-spotted parsley that is still mistaken for fennel, carrot, and Queen Anne's lace.

Do not taste. Literature describes a mouse-urine, parsley rankness.

Harvest: Not a crop. Learn the purple-spotted stem in year 2 bloom.

The churchyard evergreen — a beautiful hedge whose seeds and foliage stop a heart.

Do not taste.

Harvest: A hedge in 3–5 years as an ornamental — never as a drug

A sweet May bell that is a foxglove cousin — perfume, not a homemade heart drop.

Do not taste. The flowers smell of sweetness; that is not an invitation.

Harvest: Bloom in spring from established pips — ornamental only

A tropical star-leaf with beautiful poisonous seeds — oil is a laxative, the mash is a biotoxin.

Do not chew the seeds. Castor oil is oily, bland, and notoriously unpleasant as a purge.

Harvest: Ornamental foliage in 40–60 days; seed is not a home crop