Marigold - Calendula officinalis (LINN.)                                     General, Cultivation, Products, Applications, Company Profiles, Suppliers, Market, Report                                             Primary Information Services                                                        Home. Ordering Information. Contact

Information @ a Glance

General

  • Calendula (Ca-lén-du-la, pot marigold) is a genus of about 12-20 species of annual or perennial herbaceous plants in the daisy family Asteraceae, native to the area from Macaronesia east through the Mediterranean region to Iran.
  • The leaves are spirally arranged, 5-18 cm long, simple, and slightly hairy. The flower heads range from pastel yellow to deep orange, and are 3-7 cm across, with both ray florets and disc florets.
  • Marigolds are considered by many gardening experts as one of the most versatile flowers to grow in a garden, especially since it is easy to grow.
  • Marigold petals are considered edible. They are often used to add color to salads, and marigold extract is commonly added to chicken feed to produce darker egg yolks

Cultivation

  • Seeds may be sown directly in the bed, border, or flower box throughout spring and summer.
  • The plant prefers a rich, light soil and a sunny location.
  • Add compost to the soil if necessary, then sidedress with additional compost when the plants are well extablished.
  • Water deeply during dry spells. It will seed itself readily.

Application

  • Calendula heals wounds as well as internal and external ulcers.
  • It is an antiseptic, and improves blood flow to the affected area. As an antifungal agent, it can be used to treat athlete's foot, ringworm, and candida.
  • An infusion of the petals can be used as a rinse to lighten and brighten hair. The petals also make a nourishing cream for the skin.
  • Pot marigold makes an attractive cut flower and can be grown in the vegetable garden to help with insect control.

Report

  • Developments with Calendula oil offer a European replacement for tung oil. Tung oil is most commonly used in paints and inks as it contains high levels of polyunsaturated fatty acids.
  • Calendula has the potential to replace the 5,000t of tung oil imported annually into the UK from China and South America at prices between $1,200 and $2,300.
  • Results from trials carried out in the UK in 1997 indicated a yield potential of at least 2 t/ha at an average 20% oil content. This straight substitution for the somewhat erratic supply of tung oil would represent about 10,000 ha of production in the UK alone.
     

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