How to Grow Katz Purple
Matthiola incana
Your complete guide to growing Katz Purple.
📷 Wikipedia: FlowerWhen to Plant Katz Purple
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 Katz Purple
✓ Good companions
Repels ants, aphids, and rodents while attracting pollinators
Attracts beneficial insects and provides habitat for predatory insects
Deters moths, fleas, and mosquitoes with aromatic oils
Repel nematodes and aphids while attracting beneficial insects
Act as trap crops for aphids and cucumber beetles, attract pollinators
Provide beneficial shade and attract pest-eating birds
Attracts beneficial insects like hoverflies and parasitic wasps
Attracts butterflies, bees, and beneficial predatory insects
✗ Keep away from
Produces juglone toxin that inhibits growth of most flowering plants
Releases allelopathic compounds that suppress nearby plant growth
Inhibits growth of most garden plants through allelopathy
