Mosaic Yard Long Bean

Family: Fabaceae Legume

Planting Schedule

Provide your location or planting zone to unlock dates and add Mosaic Yard Long Bean to a garden.

Sweetly fragrant pods unfurl in a striking mosaic of creamy gold and soft green, their long, graceful curves catching the light as they mature.

Mosaic Yard Long Bean delivers crisp, tender texture with a pleasantly mild, green-bean flavor—ideal for stir-fresh favorites, quick skillet-style meals, and vibrant pickling where its patterned pods stay delightfully snappy. Grow this warm-season standout for a steady harvest rhythm around 70 days, and enjoy the visual delight of each new pod as it appears along the vine.

Light: Full SunMaturity: 70 DaysHabit: Vine

Botanical illustration of Mosaic Yard Long Bean

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Mosaic Yard Long Bean Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Direct Sow	May 25th	Aug 3rd – Aug 29th
Zone 2b	Direct Sow	May 15th	Jul 24th – Aug 25th
Zone 3a	Direct Sow	May 15th	Jul 24th – Sep 1st
Zone 3b	Direct Sow	May 19th	Jul 28th – Sep 21st
Zone 4a	Direct Sow	May 15th	Jul 24th – Sep 24th
Zone 4b	Direct Sow	May 13th	Jul 22nd – Sep 27th
Zone 5a	Direct Sow	May 8th	Jul 17th – Sep 30th
Zone 5b	Direct Sow	May 4th	Jul 13th – Oct 5th
Zone 6a	Direct Sow	May 1st	Jul 10th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	Jul 4th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	Jun 29th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	Jun 19th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	Jun 10th – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	Jun 1st – Nov 12th
Zone 9a	Direct Sow	Mar 6th	May 15th – Nov 26th
Zone 9b	Direct Sow	Feb 9th	Apr 20th – Dec 9th
Zone 10a	Continuous Production
Zone 10b	Continuous Production
Zone 11a	Continuous Production
Zone 11b	Continuous Production
Zone 12a	Continuous Production
Zone 12b	Continuous Production
Zone 13a	Continuous Production
Zone 13b	Continuous Production

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	55
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

This yard-long type is a bean that eats like a crisp vegetable—mild flavor, strong aroma, and a snap that survives quick heat. It’s built for aggressive seasoning (soy/ginger/sesame or lemony butter) without turning mealy, and its pods stay satisfyingly crunchy when pickled.

Best Uses

fast high-heat stir-fry—keep it bright and snappy
quick skillet sauté with garlic and butter for glossy pods
shallow pickling for snappy “crunch” rounds that hold their bite
blanch-and-chill salad duty with a sharp vinaigrette

Flavor Profile

mild, green-bean flavor tender-crisp snap sweetly fragrant aroma light, clean finish

Kitchen Pairings

garlic ginger soy sauce sesame oil lemon butter

Frequently Asked Questions

What pest or disease commonly affects Vigna unguiculata subsp. sesquipedalis (yard long beans), and how can I manage it?

A common problem is fungal leaf spotting and blight promoted by warm, humid weather, often showing as brown/black spots that spread on leaves and sometimes pods. Improve airflow with wider spacing, water at the base (not the leaves), and remove heavily spotted leaves early to slow spread. If spotting is spreading, use a labeled fungicide for edible beans and follow label timing through the season.

How often should I water yard long beans during peak production, and what soil moisture should I maintain?

During flowering and pod fill (mid-season through maturity), keep soil consistently moist but not waterlogged—aim for about 1–2 inches of water per week depending on heat and soil type. Water deeply 1–2 times weekly, increasing frequency during hot spells, and avoid letting the top few inches dry out completely because pod set and pod length can suffer. Mulch helps stabilize moisture around Vigna unguiculata subsp. sesquipedalis.

How do I know when Mosaic yard long beans are ready to harvest?

Harvest when pods are long, firm, and still tender—typically around 60–75 days from sowing, with the best eating quality when pods are harvested before seeds enlarge and the pod feels “stringy.” For most yard long bean types, pick every 2–3 days once plants start producing to encourage continuous flowering and longer pod formation. If you can bend a pod without it snapping and the surface is smooth, it’s usually ready.