Moonlight

Family: Fabaceae Legume

Moonlight pole bean brings a luminous harvest—long, slender pods that catch the light in a cool, pale green sheen and hold their crisp snap.

Their flavor is clean and sweet with a tender, meaty bite, ideal for roasting until caramel-kissed, tossing fresh for quick brightness, and simmering into silky sauces. Train the vigorous vines for steady, abundant picking through the season, and enjoy pods that stay pleasantly crisp rather than turning tough.

Light: Full SunMaturity: 75 DaysHabit: Climbing

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	Jul 9th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Climbing
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	55
Min Night Temp (°F)	45
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

These pole beans stay pleasantly crisp for a long stretch, so they don’t collapse into mush—roast them hot to pull out a sweet, toasted edge while keeping that tender, meaty bite. Use lemon and garlic to sharpen the “green” notes, and finish with butter or parmesan so every pod tastes glossed, not flat.

Best Uses

high-heat roasting until blistered and caramel-kissed
quick toss with butter or olive oil for crisp-tender snacking sides
short blanch-and-shock for cold salads with bright vinaigrette
stovetop simmer to thicken a silky pan sauce or velouté-style puree

Flavor Profile

clean, sweet snap tender-meaty bean bite light vegetal freshness roasting-friendly caramel notes

Kitchen Pairings

lemon garlic olive oil butter parmesan black pepper

Frequently Asked Questions

What’s a common disease problem for runner bean (Phaseolus coccineus) and how do I control it?

One frequent issue is angular leaf spot (often shows as small, water-soaked spots that turn tan/brown with yellow halos), which spreads quickly in warm, humid weather. Remove and destroy infected leaves, avoid overhead watering, and improve airflow with wider spacing and proper trellising. If it keeps recurring, apply a labeled copper-based fungicide according to the product directions early in the spotting stage.

How often should I water runner bean (Phaseolus coccineus) during peak growth, and what soil moisture level should I maintain?

During active flowering and pod fill (roughly mid-season through maturity), keep the soil consistently moist but not waterlogged—aim for about 1 inch (2.5 cm) of water per week, split as needed during hot spells. Water at the base in the morning so the root zone stays evenly damp while the foliage dries by evening. If the top 1–2 inches of soil dry out between waterings, plants may shed flowers and produce thinner pods.

How can I tell when Moonlight runner beans (Phaseolus coccineus) are ready to harvest?

Harvest when the pods are firm, fully developed, and still tender—typically around 70–90 days from sowing, but follow the 75-day target for this crop. Pick pods before seeds harden: if you can clearly see the beans swelling and the pod snaps easily, it’s usually ready. For best eating quality, harvest every 2–3 days once pods start producing.