Pot Marigold Care
Calendula officinalis
An easy-to-grow annual flower that likes cool weather and can be sown in autumn or spring. It prefers full sun and well-drained soil; removing faded flowers encourages continuous new blooms.
Half-hardy · -5 °C / 23 °F
Monthly care calendar
Timings are for a temperate Northern Hemisphere climate. In warmer areas tasks start earlier, in colder areas later; in the Southern Hemisphere shift them by six months.
January
- Watering: Not needed if winter precipitation is sufficient; if it turns dry, every 15 days (10 L/m²).
- Pruning: If flowers open, remove them once they fade (deadheading).
- Plant protection: Pest activity is low.
- General care: It may continue to bloom in winter.
- Pests & diseases: Watch for root rot caused by excess moisture.
- Frost risk: In hard and prolonged frosts, cover the root zone with mulch or dry leaves; also protect young plants. It is damaged below about -5 °C.
February
- Watering: If there is no rainfall, every 10-15 days (10 L/m²).
- Pruning: Encourage new bud formation by regularly cutting faded flowers.
- Plant protection: Check for aphids.
- General care: Flowering speeds up toward the end of winter.
- Pests & diseases: Check for aphids.
- Frost risk: In hard and prolonged frosts, cover the root zone with mulch or dry leaves; also protect young plants. It is damaged below about -5 °C.
March
- Watering: Water once a week as the weather warms (10-15 L/m²).
- Fertilizing: Apply a balanced fertilizer or well-rotted organic fertilizer once when it wakes from dormancy.
- Pruning: For continuous flowering, deadheading is very important this month.
- Plant protection: The riskiest period for aphids. If necessary, use neem oil or soapy water made with Aleppo soap.
- General care: The plant is in its most productive flowering period.
- Pests & diseases: Be watchful for aphids and powdery mildew (white powder on the leaves).
April
- Watering: If there is no rainfall, water every 15 days.
- Pruning: Keep picking off spent flowers.
- Plant protection: Continue checking for aphids and powdery mildew. If you see powdery mildew, pick off the affected leaves and increase air circulation.
- General care: If you want to collect seeds, let some flowers fade.
- Pests & diseases: Aphids and powdery mildew are the most common problems.
May
- Watering: If there is no rainfall, water once a week.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- Plant protection: Pest populations may increase, especially aphids.
- General care: Spread a 5-7 cm layer of mulch over the root zone; it retains soil moisture and suppresses weeds. Do not pile mulch against the trunk.
- Pests & diseases: As the plant comes under stress, it becomes more vulnerable to pests.
June
- Watering: Water deeply twice a week; prefer infrequent and generous watering over small and frequent. Water so that the soil is wetted 10-15 cm down from the surface.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: The plant sets seed and dies back. Collect seed for next year or let it self-sow. Pull up plants whose appearance has deteriorated.
- Pests & diseases: It is at the end of its life.
July
- Watering: Water deeply twice a week; prefer infrequent and generous watering over small and frequent. Water so that the soil is wetted 10-15 cm down from the surface.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: Care for the summer annuals. Start preparing the site for autumn sowing.
August
- Watering: Water deeply twice a week; prefer infrequent and generous watering over small and frequent. Water so that the soil is wetted 10-15 cm down from the surface.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: At the end of the month, clear out summer plants, aerate the soil and enrich it with compost to prepare for autumn sowing.
September
- Watering: If there is no rainfall, water once a week.
- Fertilizing: Mixing a little compost into the soil before sowing is sufficient. Do not over-fertilize.
- Pruning: Regularly remove spent flowers at the base; this encourages new flowering.
- General care: Sow the seeds directly into prepared soil at a depth of 1 cm. Clear the weeds.
- Pests & diseases: Watch for slugs and snails around newly germinated seedlings.
October
- Watering: If there is no rainfall, water every 15 days.
- Pruning: When seedlings reach 10 cm, pinch out their tips to encourage a bushier structure.
- Plant protection: Check the young leaves for aphids.
- General care: It is removed at the end of the season; it is replaced with seasonal planting.
- Pests & diseases: Check for aphids.
November
- Watering: Watering once a week is usually enough (10 L/m²); monitor rainfall.
- Pruning: If needed, remove yellowing lower leaves.
- Plant protection: Pest activity decreases.
- General care: Plants strengthen for winter.
December
- Watering: Winter precipitation is sufficient. If there is a dry spell, water every 15 days (10 L/m²).
- Pruning: If there are flowers that open in winter in mild regions, cut them when they fade.
- General care: The plant continues to develop slowly.
- Pests & diseases: Excess moisture and poor drainage can cause root rot.
- Frost risk: In hard and prolonged frosts, cover the root zone with mulch or dry leaves; also protect young plants. It is damaged below about -5 °C.
The care advice on this page is general and for information only; it is not professional advice. Plant age, soil and your garden’s microclimate can change the outcome. Plant protection products are mentioned only as general information; they are regulated, and the choice, dose and timing must be decided by a qualified professional under local rules. Consult a landscape architect or agronomist before applying.
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