Are Oregano and Tropaeolum Majus in the same botanical family?

No — Oregano is Lamiaceae and Tropaeolum Majus is Tropaeolaceae.

Can you substitute Oregano for Tropaeolum Majus?

They come from different families (Lamiaceae and Tropaeolaceae), so direct substitution is uncommon.

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Oregano vs Tropaeolum Majus

Origanum vulgare · Tropaeolum majus

Oregano

Origanum vulgare

D No Clinical Evidence

Family: Lamiaceae
Genus: Origanum
Primary use: culinary

Oregano is a species of flowering plant in the mint family, Lamiaceae. It was native to the Mediterranean region, but widely naturalised elsewhere in the temperate Northern Hemisphere.

Tropaeolum Majus

Tropaeolum majus

D No Clinical Evidence

Family: Tropaeolaceae
Genus: Tropaeolum
Primary use: culinary

Tropaeolum majus, the garden nasturtium, nasturtium, Indian cress or monk's cress, is a species of flowering plant in the family Tropaeolaceae. An annual or a short-lived perennial with disc-shaped leaves and brilliant yellow, orange or red flowers, it is of cultivated, probably …

At a glance

· Different families — Lamiaceae vs Tropaeolaceae.
· Both are primarily culinary.
· Evidence tiers — Oregano: D; Tropaeolum Majus: D.