How to Grow Iron Marine
Matthiola incana
Your complete guide to growing Iron Marine.
📷 Wikipedia: FlowerWhen to Plant Iron Marine
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 Iron Marine
✓ Good companions
Attracts beneficial insects and repels harmful nematodes
Repels mosquitoes, ants, and various garden pests
Deters pests with strong scent and attracts pollinators
Repel nematodes and aphids while attracting beneficial insects
Act as trap crops for aphids and cucumber beetles
Repel aphids, tomato hornworms, and squash bugs
Attracts beneficial insects like lacewings and hover flies
Attracts butterflies and beneficial predatory insects
✗ Keep away from
Releases juglone toxin that inhibits growth of many flowering plants
Releases allelopathic compounds that suppress nearby plant growth
Inhibits growth of most garden plants through allelopathy
