How to Grow Haricot Vert Cornelia
Phaseolus vulgaris 'Cornelia'
Haricot Vert Cornelia is a popular warm-season bean variety prized for its tender, stringless green pods. Gardeners cultivate this crop to enjoy fresh, crisp vegetables that thrive in full sun and require consistent moisture during their rapid growth phase.
📷 Wikimedia CommonsStarting Haricot Vert Cornelia: indoors or direct sow?
🌾 Sow directly in the garden — Haricot Vert Cornelia is not usually started indoors.
Since this is a warm-season bean sensitive to cold, you should direct sow seeds outdoors only after all danger of frost has passed and the soil has warmed up.
Soil, care & harvest
Prepare loose, well-draining soil with a pH between 6.2 and 7.0 before planting. As a warm-season bean, you must wait until after the last spring frost when the soil is thoroughly warm to sow directly outdoors or start seeds indoors. Plant seeds about one inch deep; they typically germinate within seven to ten days once conditions are favorable.
Space plants three to four inches apart in rows and provide a trellis for support as vines grow. Maintain consistent moisture with one to one-and-a-half inches of water weekly, ensuring the soil does not dry out. Apply mulch around the base to retain moisture and feed the plants regularly during the fruiting stage.
Watch for aphids, spider mites, bean beetles, and thrips; use insecticidal soap or hand-pick pests early. Prevent bacterial blight, anthracnose, white mold, and rust by practicing crop rotation and ensuring good air circulation. Harvest the tender pods fifty to fifty-five days after planting when they are young and green.
When to Plant Haricot Vert Cornelia
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | — | July – August | September – August |
| Zone 2 | — | June – August | September |
| Zone 3 | — | June – July | August – October |
| Zone 4 | — | June – July | August – October |
| Zone 5 | — | May – June | August – September |
| Zone 6 | — | May – June | July – September |
| Zone 7 | — | April – June | July – August |
| Zone 8 | — | April – May | June – August |
| Zone 9 | — | March – April | May – July |
| Zone 10 | — | February – April | May – June |
| Zone 11 | — | January – March | April – May |
| Zone 12 | — | January – March | April – May |
| Zone 13 | — | January – March | April – May |
Companion Plants for Haricot Vert Cornelia
✓ Good companions
Loosens soil for bean roots, doesn't compete for nutrients, beans provide nitrogen
Provides natural trellis support, beans fix nitrogen for corn
Shallow roots don't compete, beans provide shade and nitrogen
Repels bean beetles, aphids, and nematodes while attracting beneficial insects
Acts as trap crop for aphids and cucumber beetles, deters bean beetles
Breaks up soil, repels bean beetles, quick harvest before beans need space
Repels bean beetles, carrot flies, and cabbage moths
Improves bean flavor, repels bean beetles and aphids
✗ Keep away from
Inhibits growth of most garden plants including beans through allelopathy
Inhibits bean growth and nitrogen fixation through root secretions
Allelopathic compounds inhibit bean germination and growth
Nutrition Facts
Per 100g serving (USDA FoodData Central)
