How to Grow Holiday
Helianthus annuus
Your complete guide to growing Holiday.
📷 Wikipedia: Common sunflowerWhen to Plant Holiday
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 Holiday
✓ Good companions
Attracts beneficial insects like lacewings and provides ground cover
Offers cascading white flowers and similar care requirements
Provides shade tolerance and colorful foliage complement
Provides silvery foliage contrast and deer resistance
Provides complementary blue colors and attracts pollinators
Repel aphids, whiteflies, and nematodes while attracting beneficial insects
Act as trap crops for aphids and add colorful contrast
Repel aphids, tomato hornworms, and other garden pests
✗ Keep away from
Produces juglone which is toxic to many flowering plants
Releases allelopathic compounds that inhibit nearby plant growth
Inhibits growth of most garden plants through allelopathic effects
