‘Resina’ was selected for flower heads especially rich in resinous substances. Sticky texture is therefore normal for the variety, particularly in warm dry weather or on fully opened flowers. Wear gloves when resin irritates skin and clean scissors after harvest. This resin content explains interest in infused oils and craft preparations but guarantees no therapeutic effect. Harvest only healthy flowers without mould, hidden insects, or residues from unauthorized products. For cooking, use mainly petals and remove the flower-head base. For drying, space flowers in one layer so moisture is not trapped. Label batches and discard any material that develops an unusual odour, softness, or visible mould.
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Flowering ornamental and edible annual
Asteraceae
Organic edible flower seeds
Organic ‘Resina’ calendula (Calendula officinalis ‘Resina’)
Calendula officinalis ‘Resina’
Organic ‘Resina’ calendula, Calendula officinalis, is a 45-to-60-cm annual bearing large bright-orange to golden-yellow flowers. Resin-rich heads are harvested for infused oils, craft dyes, and culinary petals without any therapeutic promise. Sow early in spring 0.5 or 1.5 cm deep in loose moderately fertile drained soil. Space plants 20 to 30 cm apart in sun or bright partial shade. Maintain steady moisture during establishment, then water during drought. Harvest fully opened heads in the morning, remove the base before culinary use, and dry remaining flowers promptly in a dark ventilated place. Deadhead frequently for continued bloom or allow selected heads to mature when seed saving is confirmed.
Quantity
Approximately 50 seeds
Exposure
Full sun
Difficulty level
Moderate
Discover the plant
Family
Asteraceae
Genus
Calendula
Species
officinalis
Cultivar
Resina
Type
Flowering ornamental and edible annual
Cycle
Annual
Organic ‘Resina’ calendula (Calendula officinalis ‘Resina’), also called pot marigold, is a robust annual grown for large bright-orange to golden-yellow flowers. The variety is recognized for especially resin-rich flower heads that feel sticky and are valued in infused oils, craft dyes, and external botanical preparations. This profile makes no therapeutic promise. Petals are edible when taken from correctly identified plants grown with products authorized for food crops; remove the flower base before adding them to salads, rice, soups, or garnishes. Flowers also support various visiting insects through a long season. Regular picking provides repeated material while keeping the planting colourful.
Direct-sow early in spring as soon as soil can be worked, or start seed indoors approximately four to six weeks before last frost. Place seed approximately 0.5 to 1.5 cm deep and keep the bed evenly moist until emergence. Space plants approximately 20 to 30 cm apart in full sun or bright partial shade. Choose loose moderately fertile well-drained soil. Excess nitrogen favours leaves over flowers. Water during establishment and prolonged drought, then allow the surface to dry slightly between irrigations. Sources indicate approximately 45 to 60 cm height and 55 to 60 days to first flowers. Successive sowings may extend the period of fresh bloom.
Harvest fully opened flower heads in the morning after dew dries. Wear gloves when resin irritates skin, use clean scissors, and place flowers in a ventilated basket. For drying, spread them in one layer in a dark dry ventilated place, then discard every mouldy or poorly dried flower. Cut faded blooms regularly to stimulate new buds, or allow several heads to mature when self-sowing is desired and lot provenance permits seed saving. Monitor aphids, slugs, and powdery mildew; provide spacing and water at soil level. Flowering may continue until frost. Keep culinary petals separate from material intended only for crafts or exposed to products unsuitable for food crops.
Planting guide
From planting to establishment.
Planting depth
Approximately 0.5 to 1.5 cm (1/4 to 1/2 in)
Spacing / density
Approximately 20 to 30 cm (8 to 12 in) between plants
Establishment temperature
27 to 29°C (80 to 85°F)
Establishment time
7 to 14 days
Best planting time
Transplant after the last frost, once the soil has warmed and nights remain above approximately 10°C (50°F).
Propagation
Seed
Growing method
Direct-sow after last frost in warmed soil. Soak the large seeds for four to eight hours if desired, without exceeding one night, then place them 1.5 or 2.5 cm deep. Keep soil moist until emergence. Thin to 20 or 30 cm without pulling neighbouring roots roughly. For indoor starting, use biodegradable pots only two or three weeks before planting and transplant the intact root ball. Grow in sun for abundant bloom or bright partial shade during severe heat. Pinch young stems lightly only when a more branched habit is desired. Remove faded flowers regularly, monitor aphids and slugs, and avoid nitrogen-rich fertilizer. For culinary use, harvest only healthy tissue from identified plants not treated with products incompatible with edible crops.
Soil and care
The right conditions.
Exposure
Full sun
Soil pH
Approximately 6.0 to 6.8
Minimum temperature
-2°C (28°F)
Watering
Keep the seedbed evenly moist until emergence, then water deeply when the upper few centimetres begin to dry. Once established, calendula tolerates short drier periods, but repeated wilting reduces bloom and makes leaves less tender. Avoid constantly waterlogged soil that encourages root rot. Water at soil level in the morning and allow foliage to dry promptly. In containers, check moisture daily during heat waves and empty saucers. Light mulch may limit evaporation without covering the crown. Adjust frequency to rainfall, pot volume, and exposure. Harvest edible flowers only after irrigation water has dried from the petals.
Soil type
Use light to medium loose very well-drained soil. calendula often flowers better at moderate fertility than in heavily enriched ground where nitrogen mainly stimulates leaves. Incorporate only a small amount of mature compost when soil is very poor and avoid fresh manure. Ground should retain enough moisture during establishment without remaining saturated. In clay soil, grow on a slight mound or in a freely draining container. A slightly acidic to neutral pH near 6.0 to 7.5 generally suits the crop. A soil test prevents unnecessary correction and excessive amendments. Do not reuse diseased container mix without sanitation.
Fertilization
calendula needs little fertilizer. In ordinary soil, a small amount of mature compost before sowing is often sufficient. Avoid high-nitrogen fertilizer that produces abundant foliage at the expense of flowers. When a test or very weak growth confirms need, apply a balanced organic fertilizer at a low labelled rate, never against stems or onto dry soil. Check light, irrigation, and drainage first. In containers, very dilute feeding may be used only when the mix is poor and flowering slows without another cause. Stop late applications before first frost. Record additions so the same nutrients are not supplied repeatedly without evidence.
Seasonal care
In spring, sow after last frost once soil warms and keep the bed moist until emergence. Thin early to limit competition and retain evenly distributed plants without selecting only by stalk colour. In summer, water deeply during dry periods, remove faded blooms, and harvest flowers and young leaves in the morning. Monitor aphids, slugs, and caterpillars beneath leaves. During heat waves, light afternoon shade reduces stress. In late summer, allow several pods to mature only when seed harvest is desired and permitted by lot provenance. After first frost, remove plants, discard diseased tissue, clean containers, and record colours actually observed to plan the next planting. Store unused seed cool, dry, and clearly labelled.
Container growing
A controlled environment.
Recommended pot size
Approximately 40 to 60 L, at least 45 to 50 cm (18 to 20 in) in diameter and depth
Choose a container at least 20 to 30 cm wide for one plant and wider for several, with many drainage holes. Fill it with light moderately fertile mix; overly rich media favours leaves. Direct-sow in the pot or transplant a very young intact root ball. Place the container in sun or bright partial shade. Water when the surface dries, then let excess drain. Compact stems may trail lightly over the rim. Rotate the pot weekly for balanced light and remove faded blooms. During heat waves, protect the container from scorching late-afternoon sun and check water daily. Use for cooking only flowers grown in a clean pot with products authorized for edible crops.
Bloom and dimensions
The complete profile.
Flower color
Bright orange to golden yellow
Foliage color
Medium green to blue-green
Foliage type
Annual deciduous foliage
Growth rate
Vigorous during the warm season
Bloom period
Resin-rich single to semi-double flower heads
Fruiting
Young seed pods after flowering
Harvest
Fully opened flower heads in the morning after dew dries
Garden associations
What to plant with it.
Good companions
Basil and early lettuce can occupy nearby space when light, water, air circulation, and root room remain sufficient.
Avoid planting with
Avoid waterlogged soil, overhead watering, crowding, and repeated rotations with calendulas, peppers, eggplants, or potatoes.
Table calendula for fresh eating, slices, sandwiches, salads, and sauces; suitable for vegetable gardens, edible beds, and large containers.
From the garden to inspiration.
Prepare cucumber and calendula salad with correctly identified flowers and leaves. For four servings, use one cucumber, four to six fresh flowers, four small leaves, two tablespoons oil, one tablespoon mild vinegar, and a pinch of salt. Harvest in the morning from plants grown without products incompatible with food use. Inspect every piece, remove insects, rinse gently, and dry. Slice cucumber, chop leaves finely, then combine with oil, vinegar, and salt. Add whole or separated petals immediately before serving to preserve texture and colour. Taste a small amount first because the peppery flavour may be pronounced. Refrigerate leftovers promptly and discard every wilted, spotted, mouldy, or uncertainly identified tissue. This recipe makes no medical claim and should be adapted for allergies or dietary restrictions.
Frequently asked questions
Everything toknow.
Freshly opened flowers, young leaves, buds, and young seed pods are commonly used in cooking. Their peppery flavour may be intense. Use only correctly identified calendula grown without pesticides or products unauthorized for edible plants. Harvest healthy tissue, remove insects, rinse gently, and eat a small amount the first time. Pods intended as caper substitutes should follow a reliable pickling recipe and remain refrigerated according to the chosen method. Never eat a plant merely because it resembles calendula. People with allergies, pregnancy, medication, or medical dietary restrictions should seek qualified guidance before a new concentrated food use. Discard every mouldy, contaminated, or uncertainly identified portion.
The most common cause is soil overly rich in nitrogen, sometimes combined with insufficient light. The plant then invests in large leaves instead of buds. Provide more sun where possible, stop nitrogen-rich fertilizer, and let the soil surface dry slightly between irrigations without severe wilting. Also verify that plants are not overcrowded. Extreme heat may interrupt flowering temporarily; provide light late-day shade and maintain steady moisture. Do not auttically add a “bloom” fertilizer before examining soil, light, temperature, and plant age. Remove faded flowers, but retain enough healthy foliage to power continued growth. Compare container and in-ground plants before changing every planting at once.
Harvest fully opened heads in the morning after dew dries. Inspect them, remove insects, and reject every spotted, wet, or damaged flower. Spread heads in one layer on mesh or a clean tray in a dark dry very well-ventilated place. Turn them regularly and avoid thick piles because the resinous centre retains moisture. Drying is complete when petals and base are dry and brittle with no cool or soft area. Store flowers in a clean dry opaque labelled container. Check the batch after several days; when condensation, unusual odour, or mould appears, discard the entire contents instead of attempting recovery. Keep culinary material separate from flowers intended only for external crafts.
Sow after last frost in a bright site, avoid excess nitrogen, and maintain steady moisture without saturating soil. Remove faded flowers two or three times each week before they all form seed, while retaining enough foliage to feed the plant. Harvesting several edible flowers has a similar effect when cuts are clean and stems are not torn. During heat waves, light afternoon shade and thin mulch reduce stress. Monitor aphids and slugs, then intervene early with physical methods. A new series sown in early summer may take over when enough season remains for bloom before frost. No maintenance can extend this annual beyond hard freezing. Keep dated notes to identify the best sowing window in the local microclimate.
Its strengths, naturally.
Attracts or supports pollinating insects
Pollinators
Plants that attract butterflies
Butterflies
