Calendula Companion Plants
Flower50 days to maturity
Calendula, also called pot marigold, is an edible cool-season annual with bright orange and yellow daisy-like flowers that bloom for months. It is one of the most useful companion flowers in the garden: a sticky trap crop that lures aphids away from crops and a nectar-rich magnet for hoverflies, ladybugs, lacewings, and pollinators.
Companion Checker: what grows well with Calendula?
Tap any plant to see whether it pairs well with Calendula and why. Green means a beneficial companion, red means keep them apart.
Want to lay out a whole bed? Open the full drag-and-drop companion planting tool →
Companion Planting Strategy for Calendula
Calendula works as both a trap crop and an insectary plant, drawing aphids onto its own sticky stems while feeding the predators and parasitoids that clean up the rest of the bed. Scatter it among tomatoes, asparagus, and peas to recruit beneficial insects and add season-long color.
Best Companion Plants for Calendula
These plants grow well alongside Calendula — providing pest control, attracting pollinators, or making better use of your garden space.
Calendula acts as a trap crop for aphids and whiteflies and attracts hoverflies and ladybugs that prey on pests attacking tomatoes.
Calendula draws beneficial predators and is reputed to help deter asparagus beetles from the ferny spears.
Calendula's open flowers pull in hoverflies and ladybugs whose larvae feast on the aphids that commonly colonize pea shoots.
How to Grow Calendula
- Botanical name
- Calendula officinalis
- Family
- Aster/Daisy (Asteraceae)
- Sun
- Full sun to part shade; appreciates afternoon shade in hot climates
- Water
- About 1 inch per week; keep soil moderately moist
- Soil
- Average, well-draining soil, pH 6.0-7.0; tolerates poorer ground
- Spacing
- 8-12 inches apart
- Planting depth
- Sow seeds about 1/4 inch deep; they germinate best in darkness
- Germination
- 5-15 days at 60-70F
- Days to maturity
- About 45-60 days from seed to first bloom
- When to plant
- Direct sow a couple of weeks before the last spring frost; it tolerates light frost and can be resown in late summer for fall bloom
- Harvest
- Pick fully open flower heads in the morning for fresh or dried use; deadhead regularly to prolong blooming, which runs spring to frost
Common Calendula Problems
Powdery mildew (white powdery coating on leaves in humid or crowded conditions)
Space plants for airflow, water at the base, and remove affected foliage; treat with a potassium bicarbonate or neem spray if needed.
Aphids massing on stems and buds (calendula draws them as a trap crop)
Leave a few sacrificial plants to concentrate aphids, then hose off or prune heavily infested shoots and let resident ladybugs finish them.
Slugs and snails chewing seedlings and leaves
Hand-pick at night, set out beer traps, and ring young plants with crushed eggshells or iron-phosphate bait.
Fungal leaf spot and smut causing brown or black blotches
Remove and destroy infected leaves, avoid overhead watering, and clean up debris at season's end to reduce spores.
Calendula Companion Planting FAQ
What are the best companion plants for calendula?
Calendula pairs well with tomatoes, asparagus, and peas, where it acts as an aphid trap crop and draws in hoverflies, ladybugs, and lacewings. It is also a good neighbor for brassicas and most vegetables that benefit from extra pollinators and pest predators.
What should you not plant with calendula?
Calendula has no notable plant enemies and mixes freely throughout the vegetable garden. The only caution is that it self-seeds readily, so keep it out of beds where stray volunteers would crowd slow-growing crops.
Is calendula the same as marigold?
No. Calendula (Calendula officinalis) is the true pot marigold and is edible, while the common garden marigold is a different genus, Tagetes. Both attract beneficial insects, but they are not interchangeable in recipes or herbal use.
Does calendula come back every year?
Calendula is an annual that dies back after frost, but it reseeds so freely that it often returns on its own in the same spot. Let a few flowers go to seed if you want a self-sustaining patch.
More flower companions
Plan Your Calendula Garden
Use our interactive tools to design the perfect garden with Calendula and its companions.