Can I plant calendula next to tomato?

Yes. Penn State Extension confirms calendula attracts beneficial insects that prey on aphids — the more specific claim that it targets hornworm predators isn't what that research actually shows, so treat calendula as a general aphid-predator draw near tomatoes rather than a hornworm-specific one.

Companion Planting: Calendula

Calendula officinalis

Spacing: 1 per square foot. Mature height: 1-2 ft.

Plant these nearby

Tomato: Penn State Extension confirms calendula attracts beneficial insects that prey on aphids — the more specific claim that it targets hornworm predators isn't what that research actually shows, so treat calendula as a general aphid-predator draw near tomatoes rather than a hornworm-specific one. (source)

Keep these apart

No known antagonists recorded for Calendula.

Common pairings, answered directly

Can I plant calendula next to tomato?: Yes. Penn State Extension confirms calendula attracts beneficial insects that prey on aphids — the more specific claim that it targets hornworm predators isn't what that research actually shows, so treat calendula as a general aphid-predator draw near tomatoes rather than a hornworm-specific one.

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Companion planting for Calendula: which plants to grow next to it, which to keep apart, and the reason behind each pairing.

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