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Calendula

Calendula officinalis

Flower

Calendula (pot marigold) is one of the most useful companion plants in the organic garden, repelling aphids and whiteflies with its sticky resinous stems while attracting hoverflies and beneficial wasps. Its edible flowers are also used in skin-care preparations.

Growing Conditions

Sunlight

Full Sun

Water Needs

Moderate

Soil

Well-draining loam; pH 5.5–7.0

Spacing

12–18 inches

Days to Maturity

45–60 days from direct sow to first flower

Growing Zones

1
2
3
4
5
6
7
8
9
10
11
12
13

Thrives in USDA Zones 3–10

Companion Planting

Good Companions

Keep Away From

No known antagonists

When to Plant

  • Direct Sow

    2–4 weeks before last frost; self-seeds readily

  • Harvest

    Deadhead spent flowers to maintain continuous bloom all season

Organic Growing Tips

  • Allow calendula to self-seed freely around vegetable beds for a self-maintaining companion planting system.

  • Sticky stems trap aphids and whiteflies physically — inspect and dispose of infested plants periodically.

  • Harvest flowers regularly in dry conditions for use in homemade skin salves, oils, and tinctures.

  • Succession sow in autumn in mild climates for winter and spring flowering when pollinators need early food.

Common Pests

  • Aphids
  • Powdery Mildew
  • Slugs

All pest management in Garden uses safe, organic, non-toxic methods only. No synthetic pesticides, ever.