How to Grow Imperial™ Antique Shades
Viola x wittrockiana
Your complete guide to growing Imperial™ Antique Shades.
📷 Wikimedia CommonsWhen to Plant Imperial™ Antique Shades
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 Imperial™ Antique Shades
✓ Good companions
Deters ants, aphids, and rodents while attracting beneficial pollinators
Attract pollinators and beneficial predatory insects without competing for nutrients
Repels pests with aromatic oils and attracts pollinators
Repel nematodes and aphids while attracting beneficial insects
Act as trap crops for aphids and cucumber beetles while adding color contrast
Attracts beneficial insects and doesn't compete heavily for space or nutrients
Attracts beneficial insects like hoverflies and provides ground cover
Attract butterflies and beneficial insects while providing complementary colors
✗ Keep away from
Releases juglone toxin that inhibits growth and can kill sensitive flowering plants
Releases allelopathic chemicals that suppress growth of nearby plants
Produces allelopathic compounds that inhibit growth of most garden plants
