How to Grow Potomac Ivory
Antirrhinum majus
Your complete guide to growing Potomac Ivory.
📷 Wikipedia: Antirrhinum majusWhen to Plant Potomac Ivory
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 Ivory
✓ Good companions
Repels ants, aphids, and rodents while attracting beneficial pollinators
Provides habitat for beneficial insects and adds vertical interest
Deters pests with strong fragrance and attracts pollinators
Repel nematodes and aphids while attracting beneficial insects
Act as trap crops for aphids and cucumber beetles
Repels cabbage moths and carrot flies with aromatic oils
Attracts beneficial insects and provides ground cover to retain moisture
Attracts butterflies and beneficial insects for pollination
✗ Keep away from
Produces juglone toxin that inhibits growth of many flowering plants
Releases allelopathic compounds that suppress nearby plant growth
Inhibits growth of most garden plants through allelopathic effects
Competes aggressively for nutrients and water, may stunt smaller plants
