How to Grow Potomac Orange
Antirrhinum majus
Your complete guide to growing Potomac Orange.
📷 Wikipedia: Antirrhinum majusWhen to Plant Potomac Orange
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | May – June | July – September | — |
| Zone 2 | April – May | June – August | — |
| Zone 3 | April – May | June – August | — |
| Zone 4 | March – April | June – July | — |
| Zone 5 | March – April | May – July | — |
| Zone 6 | March – April | May – July | — |
| Zone 7 | February – March | April – June | — |
| Zone 8 | February – March | April – June | — |
| Zone 9 | January – February | March – May | — |
| Zone 10 | January | February – April | — |
| Zone 11 | January | January – March | — |
| Zone 12 | January | January – March | — |
| Zone 13 | January | January – March | — |
Companion Plants for Potomac Orange
✓ Good companions
Improves soil health and attracts pollinators while repelling pest insects
Attracts beneficial insects and provides structural support without competing for nutrients
Repels moths, fleas, and mosquitoes while attracting pollinators like bees
Repel aphids, whiteflies, and nematodes while attracting beneficial insects
Act as trap crops for aphids and cucumber beetles, protecting nearby flowers
Natural pest deterrent against aphids, tomato hornworms, and squash bugs
Attracts beneficial predatory insects and provides ground cover to retain moisture
Attracts beneficial predatory insects and butterflies, complementary bloom times
✗ Keep away from
Produce juglone toxin that inhibits growth and causes wilting in sensitive plants
Releases allelopathic compounds that suppress growth of nearby flowering plants
Compete aggressively for nutrients and water, may stunt growth of smaller flowers
