Calendula

Calendula is a vigorous hardy annual from the daisy family, bearing single or fully double flowers in shades of orange, gold, yellow, and cream atop branching stems 40–60 cm tall. Native to the Mediterranean, it thrives in cool conditions and is equally valued as an ornamental cut flower, an edible garnish, and a medicinal herb rich in anti-inflammatory resins. It tolerates light frost, self-seeds freely, and performs well in borders, raised beds, and containers.

Growing

Sow seeds 1 cm deep directly in the ground once soil reaches 5 °C, spacing plants 20 cm apart in rows 30–45 cm apart. Seeds germinate in 8–14 days. For an earlier display, start transplants 6–8 weeks before the last frost risk, sowing 1/4 inch (approx. 0.6 cm) deep in trays; harden off before planting out once nights stay above 2 °C. Direct sowing is preferred and simpler — calendula dislikes root disturbance. Thin to final spacing once seedlings are established.

Care

Water regularly but avoid waterlogging; calendula tolerates drought better than wet feet. No feeding is needed in average garden soil, though a balanced liquid feed every 3–4 weeks boosts flower production on poorer soils. Deadhead spent blooms consistently to extend flowering — remove the entire flower head back to a leaf node. In very hot weather, growth slows; plants recover as temperatures drop. No staking required for most varieties.

Harvest

Harvest flowers when the petals are fully open but before the centre disc begins to shed pollen heavily — at this stage resin content and freshness are at their peak. Cut the stem cleanly just above a leaf node with scissors or a sharp knife to encourage side-shoot branching and continuous bloom. Harvest in the morning once dew has dried. The harvest window extends over many weeks; consistent picking prevents setting seed and prolongs the season.

In the kitchen

Use fresh petals scattered over salads, grain bowls, and soups for a mildly tangy, slightly resinous flavour and vivid colour. Petals can be used to decorate cakes and desserts or stirred into rice as a saffron substitute for colour. Dry petals are used to make herbal teas, infused oils, and salves; the whole plant is edible.

Storing

Fresh-cut stems last 7–10 days in a vase of cool water; re-cut the stems daily and change the water every two days. Dry petals spread on a rack in a warm, airy, shaded space for 1–2 weeks until crisp, then store in an airtight glass jar away from light for up to 12 months. Infused oils keep up to 12 months in a cool, dark cupboard.