Haricot Vert Cornelia
Phaseolus vulgaris 'Cornelia'
The ultimate gourmet French filet bean that produces incredibly slender, tender pods prized by fine restaurants and home cooks alike. These pencil-thin beans maintain their delicate texture and refined flavor even when mature, offering the authentic French haricot vert experience in your own garden. Perfect for gardeners who appreciate culinary excellence and want to elevate their cooking with truly premium ingredients.
Harvest
50-55d
Days to harvest
Sun
Full sun
Zones
2–11
USDA hardiness
Difficulty
Moderate
Planting Timeline
Showing dates for Haricot Vert Cornelia in USDA Zone 7
All Zone 7 bean →Zone Map
Click a state to update dates
Haricot Vert Cornelia · Zones 2–11
Growing Details
Zone-by-Zone Planting Calendar
| Zone | Indoor Start | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| 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 |
Complete Growing Guide
Light: Full sun (6 or more hours of direct sunlight a day). Soil: High Organic Matter. Drainage: Good Drainage. Spacing: 6-feet-12 feet. Growth rate: Rapid. Maintenance: 'Rattlesnake'Pole Snap Bean, 'Rattlesnake'. Propagation: Seed. Regions: Coastal, Mountains, Piedmont.
Harvesting
The boat-shaped seed pods are bilaterally symmetrical and can be green, yellow, white, or purple at maturity. There is a wide variety of color and shape choices among cultivars.
Color: Gold/Yellow, Green, Purple/Lavender, White. Type: Legume. Length: > 3 inches. Width: < 1 inch.
Garden value: Edible, Good Dried
Harvest time: Fall, Summer
Bloom time: Spring, Summer
Storage & Preservation
Fresh Haricot Vert Cornelia maintains peak quality for 5-7 days when stored in perforated plastic bags in the refrigerator crisper drawer. Don't wash until ready to use, as excess moisture accelerates deterioration.
For freezing, blanch whole beans in boiling water for 2-3 minutes, immediately plunge into ice water, then drain thoroughly before vacuum sealing or freezing in zip-top bags. Properly blanched haricot verts maintain their delicate texture for up to 8 months frozen.
Pickling works beautifully with these slender beans—use a light vinegar brine with herbs like tarragon or thyme to complement their subtle flavor. Lacto-fermentation also preserves their crisp texture while adding beneficial probiotics. Avoid pressure canning as the high heat destroys the delicate texture that makes this variety special.
History & Origin
Origin: Tropical America
Advantages
- +Fast-growing
Considerations
- -Toxic (Seeds): Medium severity
Companion Plants
Plant Together
Marigold
Repels bean beetles, aphids, and nematodes while attracting beneficial insects
Nasturtium
Acts as trap crop for aphids and cucumber beetles, deters bean beetles
Carrots
Loosens soil for bean roots, doesn't compete for nutrients, beans provide nitrogen
Radishes
Breaks up soil, repels bean beetles, quick harvest before beans need space
Summer Savory
Improves bean flavor, repels bean beetles and aphids
Corn
Provides natural trellis support, beans fix nitrogen for corn
Lettuce
Shallow roots don't compete, beans provide shade and nitrogen
Rosemary
Repels bean beetles, carrot flies, and cabbage moths
Keep Apart
Onions
Inhibits bean growth and nitrogen fixation through root secretions
Sunflowers
Allelopathic compounds inhibit bean germination and growth
Fennel
Inhibits growth of most garden plants including beans through allelopathy
Nutrition Facts
Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #2346400)
Pests & Disease Resistance
Resistance
Moderate resistance to common bean mosaic and bacterial diseases
Common Pests
Aphids, spider mites, bean beetles, thrips
Diseases
Bacterial blight, anthracnose, white mold, bean rust