How to Grow Potomac Plumblossom
Antirrhinum majus
Your complete guide to growing Potomac Plumblossom.
📷 Wikimedia CommonsWhen to Plant Potomac Plumblossom
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 Plumblossom
✓ Good companions
Repels ants, mice, and mosquitoes while attracting pollinators
Deters aphids and other soft-bodied insects with sulfur compounds
Attracts beneficial pollinators and repels pests with aromatic oils
Natural pest deterrent, repels nematodes and aphids
Acts as trap crop for aphids and adds nitrogen to soil
Repels cabbage moths, carrot flies, and other garden pests
Ground cover that attracts beneficial insects and conserves soil moisture
Attracts predatory insects and improves soil health
✗ Keep away from
Produces juglone toxin that inhibits growth of sensitive plants
Releases allelopathic compounds that suppress nearby plant growth
Allelopathic effects inhibit germination and growth of smaller plants
