How to Grow SunFill™ Green
Helianthus annuus
Your complete guide to growing SunFill™ Green.
📷 Wikipedia: Common sunflowerWhen to Plant SunFill™ Green
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 SunFill™ Green
✓ Good companions
Attract beneficial insects and provide habitat for pest predators
Deters moths, fleas, and mosquitoes while attracting pollinators
Repel aphids, whiteflies, and nematodes while attracting beneficial insects
Act as trap crops for aphids and cucumber beetles, protecting nearby plants
Repel aphids, tomato hornworms, and squash bugs naturally
Provide structural support and attract beneficial birds that eat pest insects
Attracts hover flies and parasitic wasps that control aphids and other pests
Attract pollinators and beneficial predatory insects like ladybugs and lacewings
✗ Keep away from
Produce juglone toxin that inhibits growth and can kill sensitive flowering plants
Releases allelopathic compounds that suppress growth of nearby flowering plants
Inhibits growth of most garden plants through allelopathic root secretions
