Marigold Petals

These marigold petals come from Tagetes erecta, the African or Aztec marigold, not pot marigold (Calendula). Its petals are the main commercial source of lutein, the yellow carotenoid that forms part of the eye's macular pigment and is studied for skin. The flowers also contain polyphenols, and hot-water infusion has been shown to extract the petals' bioactive and aroma compounds. Human research on lutein uses concentrated supplements; published studies on marigold petals themselves are lab-based.

Benefits of Marigold Petals

A natural source of lutein

Provides antioxidant polyphenols

Lutein is studied for eye health

Lutein is studied for skin tone

Key Nutrients

No published data exist on the vitamin or mineral content of a marigold petal infusion. Its key compound, lutein, is a carotenoid rather than a vitamin, and is listed under Bioactive Components.

Bioactive Components

Lutein: The main carotenoid in the petals; commercially available lutein is derived from marigold petals.

Zeaxanthin: A related carotenoid found alongside lutein in marigold preparations.

Polyphenols: Most of the compounds identified in the flower extract were polyphenolic derivatives.

Why Drink Marigold Petals in Your Tea Blends?

Marigold petals add sunny colour and a source of lutein to a blend. Here's what the research does, and doesn't, show:

A Natural Source of Lutein: Marigold petals are the main source of commercial lutein, the carotenoid behind most lutein supplements.

Lutein Studied for Eye Health: In trials of people with age-related macular degeneration, 10 to 20 mg of lutein a day increased macular pigment and improved visual acuity and contrast sensitivity.

Lutein Studied for Skin Tone: In a 12-week trial, a marigold-derived lutein and zeaxanthin supplement improved overall skin tone and luminance compared with placebo.

Provides Antioxidant Polyphenols: The flower is rich in polyphenolic compounds, and a simple hot-water infusion extracts its bioactive and aroma compounds.

The lutein trials used 10 to 20 mg a day in capsules. How much lutein a cup of marigold petal tea delivers has not been measured in published studies, so the eye and skin findings belong to lutein, not to the tea itself.

Scientific Evidence

Source of lutein

Phytochemical study of Tagetes erecta flowers at different blooming stages: the petals are the source of commercially available lutein, an approved food colorant.

Phytochemical profiling of Tagetes erecta L. flowers at various blooming stages — Frontiers in Sustainable Food Systems, 2025.

"Commercially available lutein is derived from the petals of marigold flowers"

Antioxidant polyphenols

Lab analysis of Tagetes erecta flowers: most compounds identified in the extract were polyphenolic derivatives, and the extract showed antioxidant activity.

Phytochemical Profile, Antioxidant Activity, and Cytotoxicity Assessment of Tagetes erecta L. Flowers — Burlec A.F. et al. Molecules, 2021; 26(5): 1201.

"most were identified as polyphenolic derivatives"

Extraction by hot-water infusion

Lab study of six edible flower teas including Tagetes erecta: simple hot-water infusion extracted bioactive and aroma compounds, compared against ethanol extraction.

Hot-Water Infusion as an Efficient and Sustainable Extraction Approach for Edible Flower Teas — Applied Sciences, 2025; 15(23): 12730.

"simple hot-water infusion effectively recovers both bioactive and aroma-active compounds"

Eye health (lutein)

Meta-analysis of 9 randomized controlled trials in patients with age-related macular degeneration: 10 or 20 mg of lutein a day increased macular pigment, visual acuity, and contrast sensitivity. Supplement doses, not tea.

Effects of lutein supplementation in age-related macular degeneration — Feng L. et al. PLoS ONE, 2019; 14(12): e0227048.

"dietary lutein may be beneficial to AMD patients"

Skin tone (lutein)

Randomized, double-blind, placebo-controlled trial: a daily marigold-derived supplement of 10 mg lutein and 2 mg zeaxanthin for 12 weeks improved overall skin tone and luminance. Supplement dose, not tea; conducted by the supplement's maker.

Overall skin tone and skin-lightening-improving effects with oral supplementation of lutein and zeaxanthin isomers — Juturu V. et al. Clinical, Cosmetic and Investigational Dermatology, 2016; 9: 325-332.

"Overall skin tone was significantly improved in the L/Zi group compared to placebo"