How to Grow Dianthus Barbatus Sweet William
Dianthus barbatus
Your complete guide to growing Dianthus Barbatus Sweet William.
📷 Wikimedia CommonsWhen to Plant Dianthus Barbatus Sweet William
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 Dianthus Barbatus Sweet William
✓ Good companions
Attracts beneficial insects and provides ground cover to retain soil moisture
Repels ants and aphids while creating attractive color contrasts
Repels aphids and other pests while attracting beneficial pollinators
Deters nematodes and aphids while providing complementary colors
Similar growing requirements and bloom times create attractive combinations
Deters carrot flies and cabbage moths that may damage nearby plants
Attracts pollinators and beneficial predatory insects
Improves soil health and attracts beneficial insects for pest control
✗ Keep away from
Produces juglone toxin that inhibits growth of many flowering plants
Releases allelopathic compounds that suppress growth of nearby plants
Inhibits growth of most garden plants through allelopathic root secretions
