Cosmos Caudatus

Ulam Raja

Basic Information: 

Cosmos caudatus is an annual plant species of the genus Cosmos. It is originating from Latin America and later grown in Southeast Asia. The leaves and shoots of cosmos caudatus can be consumed raw. The unique taste makes it a flavorful, favored side dish.

Nutrition, Traditional Use and Research

The statements below describe nutrition facts, traditional use and published research. They are not health claims for our products.

• Cosmos caudatus (kenikir, ulam raja) is eaten as a fresh leaf vegetable (ulam) in Southeast Asia and is traditionally used in folk practice.
• The leaves contain high amounts of polyphenols and show a very high antioxidant capacity in laboratory tests. Epidemiological studies have found that a higher intake of vegetables rich in phenolic compounds is associated with a lower frequency of several chronic diseases. Such studies cannot prove cause and effect, and no health effect of Cosmos caudatus in people can be concluded from them.
• In laboratory (in vitro) experiments, extracts of Cosmos caudatus inhibited enzymes involved in the digestion of carbohydrates, such as alpha-glucosidase and pancreatic alpha-amylase. This is a test-tube finding only. It does not show an effect on blood sugar in people, and Cosmos caudatus is not a treatment for diabetes.
• In eastern Indonesia, the leaves are traditionally used in folk practice with the aim of influencing blood pressure. Animal studies and in vitro experiments (for example on the ACE enzyme and on diuretic properties) have examined this. Evidence in people is lacking, and Cosmos caudatus is not a replacement for medical care.
• In a study in mice, extracts of Cosmos caudatus were examined for effects on experimentally induced inflammation. The results are preliminary and cannot be transferred to people.
• Researchers have discussed whether the antioxidants in Cosmos caudatus may be relevant to bone metabolism, for example after the menopause, and whether calcium intake may play a role. This is a theory based on laboratory and animal data and is not proven.
• Extracts of Cosmos caudatus showed antimicrobial and antifungal activity in laboratory tests. No studies in living organisms have confirmed this, and further research is needed.
• In animal studies of acute and subacute toxicity, no toxic effects of Cosmos caudatus were reported. Further research is needed on chronic toxicity and on the safety of regular leaf intake in people.

Fun Facts:

• 100 gram cosmos caudatus contains 2400 mg of Vitamin C (L-Ascorbinacid- Equivalent)
• In Malaysia it is called ulam raja “the king’s salad”.

Also we make tea from the Cosmos Caudatus. You can buy the tea also online in our shop.

Here’s a step-by-step guide on how to grow cosmos caudatus:

1. Choose a Planting Location:

Cosmos caudatus thrives in full sun and well-drained soil. If your garden has poor drainage, consider amending the soil with organic matter like compost or aged manure to improve its texture and water-holding capacity.

2. Sow Seeds:

Cosmos caudatus can be grown directly in the garden or started indoors 4-6 weeks before the last frost. To direct sow, wait until the soil temperature has warmed to at least 65°F (18°C). Sprinkle the seeds thinly over the prepared soil, cover them with a thin layer of soil, and water gently. To start seeds indoors, fill seed trays with a seed-starting mix and sow the seeds 1/4 inch deep. Keep the trays moist and warm, and transplant the seedlings outdoors after the last frost.

3. Thinning and Spacing:

Once the seedlings have emerged and have two sets of true leaves, thin them to provide adequate spacing for growth. For cosmos caudatus, space the plants 12-24 inches apart.

4. Watering and Mulching:

Cosmos caudatus prefers moist but not soggy soil. Water regularly, especially during hot, dry periods. Mulching around the plants with organic material like shredded leaves or straw will help to conserve moisture, suppress weeds, and regulate soil temperature.

5. Fertilizing:

Cosmos caudatus is not heavy feeder, but it will benefit from occasional fertilization. Apply a balanced fertilizer every 4-6 weeks during the growing season.

6. Deadheading and Pruning:

Deadheading spent flowers will encourage continued blooming throughout the season. To promote bushier growth, pinch off the tips of the stems when the plants are young.

7. Pest and Disease Control:

Cosmos caudatus is relatively resistant to pests and diseases, but it can be susceptible to aphids, spider mites, and fungal diseases. If you notice any pests or diseases, treat them promptly with organic or least-toxic methods.

8. Harvesting:

Cosmos caudatus blooms from mid-summer to early fall. Harvest flowers when they are fully open and have a vibrant color. Cut the stems just above a set of leaves.

With its ease of care, long blooming season, and attractive flowers, cosmos caudatus is a wonderful addition to any garden. Follow these simple growing tips and enjoy the beauty of these charming blossoms.

Sources:

https://en.wikipedia.org/wiki/Cosmos_caudatus

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4746859/

https://pdfs.semanticscholar.org/84c3/05851f4390023be460566d345b09749f8346.pdf

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4746859/

https://www.researchgate.net/publication/281701474_Antioxidant_activity_of_herbal_tea_prepared_from_Cosmos_caudatus_leaves_at_different_maturity_stages

https://www.hindawi.com/journals/ecam/2015/405615/