Calendula 'Radio' is a old variety that was first available to gardeners in the 1930’s and is now quite hard to find.
It blooms with shining orange blooms with quill-like petals. Crisply defined and almost quill-like, they resemble a cactus dahlia rather than a calendula. Some fully double, they will flower even in the poorest conditions.
The bushy plants grow close to 50cm (20in) in height and if you keep them deadheaded they will reward you by blooming until frost.
Calendula are considered by many gardening experts as one of the most versatile flowers to grow in a garden, especially since they are easy to grow, and tolerate most soils. Like most hardy annuals, it is easy to grow and can be simply sown where it is to flower. It is tolerant of any well-drained soil, even quite poor ones.
Cheerful and bright, use Calendula alone or in combination with other flowering annuals and perennials in beds, borders or containers. The tangy petals of are edible. Sprinkle salads and decorate cakes with the petals or feed them to chickens to produce dark coloured yolks. The plants are also an excellent companion plant because of their insect repelling properties.
Sowing: Sow directly in March to April or in August to September
Easily sown directly into soil in late summer or early autumn in milder climates. Will do well in moist soil, but requires good drainage. The optimum growing temperature is 18 to 20°C (65 to 70°F). Germination will usually take 14 to 21 days.
Sow thinly, 6mm (¼in) deep in drills 30cm (12in) apart in well-cultivated soil which has been raked to a fine tilth. Water ground regularly, especially in dry periods. When large enough to handle, thin out seedlings until they are finally 30cm (12in) apart in spring
As a Hardy Annual, it can also be sown August to September for an earlier spring flowering next year. Sow either directly as above in mild areas, or, for overwintering sow in pots. Use pots or trays of moist seed compost and cover with a very fine sprinkling of compost or vermiculite. After sowing, do not exclude light as this helps germination. Keep the surface of the compost moist but not waterlogged;
When transplanting Calendula, try not to damage the taproot.
When large enough to handle, transplant seedlings into 7.5cm (3in) pots or trays. Overwinter plants in cool, light, frost-free conditions before planting out the following spring, or grow on as greenhouse pot plants.
Sowing to flowering takes about 18 weeks, grow in full sun for best blooms. The flowers are perfect for cutting, pinch out the terminal buds to encourage more flowers. Keeping the plants dead-headed makes them practically perennial.
Lift the plants at the end of the year if you want to prevent self seeding, but when they add so much colour who cares!
The flowers can be harvested anytime they are in full bloom. If the stem, leaves and flower are to be dried for an arrangement, snip the stem near ground level. If only the flower is to be dried, snip it off from the stem just below its' base. Whole plants and flowers can be easily dried, especially in a dehydrator.
Whole plants should be dried separately from the individual flowers as the plants will take much more time to dry. Arrange the plants or flowerheads on a drying rack such they do not touch one another. Once dried, the flower petals will retain their bright colour indefinitely. If only the dried flower petals are desired, remove the petals from the head and store the petals in an airtight container away from bright light. The petals can then be used anytime for culinary purposes or for skincare products.
Calendula has a long history as a medicinal herb. Calendula was grown in monastery gardens throughout medieval Europe and was highly valued for its ability to heal wounds.
Historically, Calendula flowers have been considered beneficial in reducing inflammation, promoting wound healing and was used as an antiseptic. Externally, the flowers and leaves can be made into an ointment or powder to treat a variety of skin diseases and has been seen effective in treatment of skin ulcerations and eczema. Calendula has been effective in treating juvenile acne and dry psoriasis. Improvement has been seen in as little as 3 to 4 days of treatment according to the Universitatea de Medicina si Farmacie.
Try running bath water over a mesh bag full of Calendula flowers for a refreshing and stimulating bath that is good for the skin.
For bee stings, rub the fresh flowers directly on the sting to relieve the pain.
As a beauty aid, a Calendula rinse made of unsweetened tea brings out the highlights in blonde and brunette hair.
The flowers have a pungent, spicy flavour. Only the flowers petals should be eaten as the centre is quite bitter.
The petals are used to flavour fish and meat soups, to add flavour and interest to cakes, breads, puddings, egg dishes and salads and in rice as a substitute for saffron.
They make a bright and zesty addition to tossed salads or use them to decorate cakes
Note - Calendula should not be confused with the African or French Marigolds which are actually members of the Tagetes botanical family. Both the flowers and leaves of the Pot Marigold are edible while those of the African and French marigolds are not.
They are an excellent companion plant because of their insect repelling properties.
Plant liberally in the vegetable garden to deter pests.
Coastal, Flower Arranging, Flowers Borders and Beds, Container Plants.
Cut flowers last for about a week in a vase.
Calendula flowers can be fed to chickens to produce wonderfully dark-coloured yolks.
Marigold blossoms give shades of yellow and wheat, when used as a natural dye.
Calendula is probably native to southern Europe though its long history of cultivation makes its precise origin unknown. It is widely naturalised further north in Europe (north to southern England) and elsewhere in warm temperate regions of the world.
The genus name originated from the Latin calendae The species name 'officinalis' refers to it being officially recognised as a medicinal herb
The common name for the calendula is 'Pot Marigold' because the florets (outer petals of the flower) are used in cooking as both flavouring and colouring agent in soups, stews, cheeses, and margarine. The flowers are still used on the Continent in the kitchen for flavouring dishes. They were once used as a herbal remedy in broths “as a comforter of the heart and spirits”. It is currently one of the top herbs used for medicinal use.
Some say calendula received this name because it blooms every month of the calendar year.
Others say it's because it blooms once each month on the full moon or maybe it's the new moon!
- Additional Information
Packet Size 2 grams Average Seed Count 280 seeds Family Asteraceae Genus Calendula Species officianalis Cultivar Radio Common Name Double Marigold Hardiness Hardy Annual Flowers Shades of orange in spring to summer Foliage Herbaceous Height 45 to 50cm (18 to 20in) Spacing 15 to 22cm (6 to 9in) Position Full sun to part shade Aspect West or south facing. Exposed or sheltered. Soil Light, poor, free draining soil Time to Sow Sow in autumn or in spring Germination 14 to 21 days at 18 to 20°C (65 to 70°F). Uses Bedding, Containers, Medicinal Herb, Edible Flowers, Cut Flower, Companion Plant