Are Calendula and Costus Speciosus in the same botanical family?

No — Calendula is Asteraceae and Costus Speciosus is Costaceae.

Can you substitute Calendula for Costus Speciosus?

They come from different families (Asteraceae and Costaceae), so direct substitution is uncommon.

Compare · per-herb profile

Calendula vs Costus Speciosus

Calendula officinalis · Costus speciosus

Calendula

Calendula officinalis

T Traditional Use

Family: Asteraceae
Genus: Calendula
Primary use: medicinal

Calendula officinalis, Mary's gold, common marigold, the pot marigold, Scotch marigold, or ruddles, is a flowering plant in the daisy family, Asteraceae. It is probably native to southern Europe, but its long history of cultivation makes its precise origin unknown, and it is wide…

Costus Speciosus

Costus speciosus

T Traditional Use

Family: Costaceae
Genus: Costus
Primary use: medicinal

Hellenia speciosa, or crêpe ginger, is a species of flowering plant in the family Costaceae. It is a herbaceous perennial rhizomatous geophyte which is also known by Cheilocostus speciosus and other botanical names.

At a glance

· Different families — Asteraceae vs Costaceae.
· Both are primarily medicinal.
· Evidence tiers — Calendula: T; Costus Speciosus: T.