Blue Lake Pole

Family: Fabaceae Vegetable

Cool, crisp snap meets a clean, sweet garden flavor in Blue Lake Pole—tender pods that stay remarkably slender as they mature.

Expect a vivid blue-green sheen with a fine, meaty texture that shines in fresh harvests and performs beautifully for roasting, stir-fries, and quick pickling. A classic pole bean for gardeners who want steady, upright production and a satisfying bite from the first picking through the season.

Light: Full SunMaturity: 55 DaysHabit: Indeterminate

Botanical illustration of Blue Lake Pole

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jun 19th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	55
Sun Requirements	Full Sun
Growth Habit	Indeterminate
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Blue Lake Pole beans earn their keep with a fine, meaty snap that doesn’t turn stringy as quickly as many runners—so they behave beautifully in fast cooking. They’re especially good when you keep them moving in heat (stir-fry or roast) or when you brighten them with lemon and fat for that crisp-sweet pop.

Best Uses

quick skillet stir-fry where they stay slender and snappy
roasting on high heat until blistered at the edges
cold-weather fresh eating—blanched and dressed while still warm
quick pickling for crunchy, blue-green snappiness

Flavor Profile

cool, crisp snap clean sweetness fine, meaty pod texture light vegetal-bean aroma with a fresh finish

Kitchen Pairings

garlic lemon butter or browned butter parmesan olive oil sesame

Frequently Asked Questions

What should I do if my Blue Lake pole beans develop white powdery spots or leaf yellowing?

Powdery mildew commonly shows as a white, dusty coating on Blue Lake pole bean leaves, while yellowing can worsen if plants stay too humid. Remove the most affected leaves, improve airflow by keeping plants off wet foliage, and water at the base in the morning. If it keeps spreading, apply a labeled potassium bicarbonate or sulfur fungicide early (when spots first appear) and repeat according to the product label.

How often should I water Blue Lake pole beans during the main growing phase to keep pods forming?

From the start of flowering through pod fill, keep the root zone evenly moist—about 1 inch of water per week, split into 2–3 waterings if it doesn’t rain. Aim for damp soil 2–3 inches down; if the surface dries and leaves look limp midday, water promptly, but don’t keep the soil soggy. Consistent moisture helps prevent blossom drop and tough, stringy pods.

How can I tell when Blue Lake pole beans are ready to harvest?

Harvest Blue Lake pole beans when pods are tender and about 4–6 inches long, usually around 55 days from sowing (often sooner if conditions are warm). Pick in the morning when pods snap easily and seeds are still small—if you can see the beans bulking through the pod, they’re getting past prime. Continue harvesting every 1–2 days to trigger new pod production.