How to Grow Sunrich Summer Provence
Helianthus annuus
Your complete guide to growing Sunrich Summer Provence.
📷 Wikimedia CommonsWhen to Plant Sunrich Summer Provence
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 Sunrich Summer Provence
✓ Good companions
Fix nitrogen in soil and benefit from sunflower's tall structure for support
Attracts pollinators and may improve sunflower seed production
Benefit from sunflower's shade and wind protection
Thrives in partial shade provided by sunflowers and conserves soil moisture
Repel aphids, whiteflies, and nematodes while attracting beneficial insects
Act as trap crop for aphids and cucumber beetles, protecting sunflowers
Attracts beneficial insects and provides ground cover to retain moisture
Attract pollinators and beneficial predatory insects like ladybugs
✗ Keep away from
Produce juglone toxin which inhibits sunflower growth and development
Releases allelopathic compounds that stunt growth of most garden plants
Both are susceptible to similar fungal diseases and compete for nutrients
