Companion Planting & Garden Value: Chile de Árbol Pepper

Capsicum annuum

Spacing: 1 per square foot. Mature height: 2-3 ft.

Plant these nearby

• Basil: Reputed to repel aphids and improve pepper growth nearby, but a controlled garden trial testing this same claim on a related crop found no pest-reduction benefit from basil, and found higher pest counts on the basil-companioned plants. Treat this pairing as unproven, not as a working pest deterrent. (source)
• Onion: Reputed to deter many common pepper pests, though this specific pairing hasn't been tested the way onion/carrot pest-masking has. Treat it as garden tradition.

Keep these apart

• Bush Beans: Beans can host bacterial blights that affect peppers.
• Tobacco: Tobacco mosaic virus survives in cured tobacco leaf and spreads by touch, so wash hands after handling tobacco (or smoking) before working with pepper plants. (source)
• Collard Greens: Commonly reported as a poor neighbor for collards.

Common pairings, answered directly

Can I plant chile de árbol pepper next to basil?

Yes. Reputed to repel aphids and improve pepper growth nearby, but a controlled garden trial testing this same claim on a related crop found no pest-reduction benefit from basil, and found higher pest counts on the basil-companioned plants. Treat this pairing as unproven, not as a working pest deterrent.

Can I plant chile de árbol pepper next to onion?

Yes. Reputed to deter many common pepper pests, though this specific pairing hasn't been tested the way onion/carrot pest-masking has. Treat it as garden tradition.

Can I plant chile de árbol pepper next to bush beans?

Better not to. Beans can host bacterial blights that affect peppers.

Can I plant chile de árbol pepper next to tobacco?

Better not to. Tobacco mosaic virus survives in cured tobacco leaf and spreads by touch, so wash hands after handling tobacco (or smoking) before working with pepper plants.

Can I plant chile de árbol pepper next to collard greens?

Better not to. Commonly reported as a poor neighbor for collards.

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

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