Last edited on October 18, 2019. View history
Blue Lake Bean
A variety of green bean
How to sow blue lake bean: Direct seed indoors or out. Transplant seedlings after hardening off.
Sun requirement for blue lake bean: Plant in Full Sun
Blue Lake is an upright bush bean with medium-thick green pods that are plump, tasty, and best when harvested at 15cm long. The plant has a high yield, long season, and benefits from inoculant.
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Blue lake bean facts
Lifespan
Height × spread
55cm × 25cmRow Spacing
25cmCrop cycle
Max altitude
Optimal light
What are growing degree days?
A plant grows with warmth, not with days. A growing degree day is one day's worth of useful warmth: how many degrees the day's average temperature is above the lowest temperature the crop grows at. Add them up from planting and you know how far along the crop is, whatever the calendar says.
Say that lowest temperature is 10°C. A day averaging 17°C gives 7 growing degree days. A day averaging 8°C gives none, as it is too cold for the crop to grow. That is why the same lettuce takes about 50 days in a summer and 90 in an autumn: it needs the same total warmth either way.
For blue lake bean, the FAO EcoCrop database gives a lowest growing temperature of 7°C and a shortest growing cycle of 50 days at its best temperature, about 675 growing degree days to a first harvest.
Where you've told us where your garden is, we use this and the weather there to predict when your blue lake bean will be ready to harvest. We don't use it for how long a plant lives or when it finishes: we go by what members have logged for that.
Plant blue lake beans with
cabbage
Video
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Time to harvest
If sown now, expect a first harvest in about 50 to 270 days.
From the growing cycle in the FAO EcoCrop database, which is the same wherever it is grown.
Ecological requirements
Data from the FAO EcoCrop database for Phaseolus vulgaris L.
| Family / Taxonomy | Magnoliopsida Rosidae Fabales Leguminosae |
|---|---|
| Life form | herb |
| Life span | annual |
| Habit | prostrate/procumbent/semi-erect |
| Optimal soil depth | medium (50-150 cm) |
| Optimal soil texture | medium, organic |
| Optimal soil fertility | moderate |
| Optimal soil drainage | well (dry spells) |
| Optimal soil salinity | low (<4 dS/m) |
| Photoperiod | short day (<12 hours), neutral day (12-14 hours) |
Learn more about blue lake beans
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