How to Grow Benary's Giant Golden Yellow
Zinnia elegans
Zinnia elegans 'Benary's Giant Golden Yellow' is a vibrant warm-season annual prized for its large, sunny blooms and long blooming period. Gardeners enjoy this easy-to-grow flower for adding bright color to borders and cutting gardens throughout the summer.
📷 Wikimedia CommonsStarting Benary's Giant Golden Yellow: indoors or direct sow?
🌾 Sow directly in the garden — Benary's Giant Golden Yellow is not usually started indoors.
Direct sow seeds outdoors after the last frost date once the soil is warm enough for germination.
Soil, care & harvest
Prepare loose, well-draining soil with a pH between 6.0 and 7.5. Since Zinnias are warm-season crops, sow seeds directly outdoors after all danger of frost has passed and soil temperatures have warmed. Press seeds lightly into the soil at a depth of about one-quarter inch. Germination typically occurs within seven to ten days under these warm conditions.
Space plants eighteen to twenty-four inches apart to ensure good air circulation and robust growth. These zinnias do not require support or trellising as they grow upright. Provide regular, consistent moisture throughout the season; while drought tolerant once established, reliable watering yields the best performance. Apply a layer of mulch around the base and feed regularly with balanced fertilizer.
Watch for aphids, spider mites, and thrips, treating infestations early with insecticidal soap or strong water sprays. Prevent powdery mildew by ensuring good airflow and avoiding overhead watering; root rot occurs only in poorly drained soil. Harvest flowers seventy-five to ninety days after sowing when buds are fully open for cutting or drying.
When to Plant Benary's Giant Golden Yellow
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 Benary's Giant Golden Yellow
✓ Good companions
Repels thrips, aphids, and spider mites that commonly attack zinnias
Attract beneficial pollinators and predatory insects while providing similar growing conditions
Repels moths, fleas, and mosquitoes while attracting beneficial pollinators
Repel nematodes and aphids while attracting beneficial insects
Act as trap crops for aphids and cucumber beetles, protecting zinnias
Repel aphids, tomato hornworms, and other pests while adding color contrast
Provide beneficial shade and attract pollinators, complement yellow color scheme
Attracts beneficial insects like lacewings and hover flies that control aphids
✗ Keep away from
Release juglone toxin that inhibits growth and can kill zinnias
Releases allelopathic chemicals that suppress growth of most garden flowers
Produces allelopathic compounds that inhibit growth of nearby flowering plants
