WHAT IT IS
Green Onion
A non-bulbing or young-harvested allium grown in dense rows for tender white and green stems.
HIGH TUNNEL + CONTAINER
Green Onion
Fine + evenly moist
Green Onion
Allium fistulosumA loose, fine-textured mix for straight, clean scallions grown in dense market bunches.
Even, never soggy pH 6.0–7.0
GROWING GUIDANCE FOR
Central Maryland / BowieLocal Bowie-area baselineAt a Glance
Is Green Onion right for your garden?
Start with the plant, the space it needs, and the conditions that determine whether it will thrive.
BEST FIT
Choose it when…
A space-efficient crop for shallow containers and succession sowing when clean straight bunches and steady moisture are priorities.
QUICK PROFILE
What to plan for
- Plant type
- Vegetable
- Life cycle
- Perennial allium grown as an annual
- Sunlight
- Full sun
- Container
- 6 IN DEEP
- Water
- Even, never soggy
- Target pH
- 6.0–7.0
BEST TIME TO PLANT OUTDOORS
Bowie planting window
- Ideal
- Mid-March–April
- Also Good
- Mid-August–mid-September
- Avoid
- Frozen or waterlogged soil
RIGHT NOW
Good time to plant
This guide treats bunching onions as a direct-sown green crop rather than full-size storage onions.
Green onions tolerate cool weather and mature quickly. Early spring is most dependable, with a late-summer sowing for fall harvest.
Can I plant this now?
- Current recommendation
- Good time to plant
- Current window
- Mid-August–mid-September
- Next best window
- Mid-March–April
- Guidance location
- Central Maryland / Bowie
- Regional coverage
- Central Maryland coverage
- USDA hardiness zone
- 7b
- Planting method
- Direct sow outdoors
- Cold tolerance
- Light-frost tolerant
- Minimum soil temperature
- 40°F
This guide treats bunching onions as a direct-sown green crop rather than full-size storage onions.
AVAILABLE AT CENTRAL MARKET
Guide only
This guide remains fully available even when the plant is not listed for pickup.
SEASONAL REFERENCE
What Should This Plant Look Like Now?
September Central Maryland
CURRENT STAGE
Fall Growth / Harvest
Typical stage for September in Central Maryland
Cool weather supports steady green leaf growth and mild shank enlargement without a large storage bulb.
Normal Right Now
- ✓
Cool nights can deepen green onion color or sweetness without signaling failure.
- ✓
The root and tops should remain firm through normal light frost.
- ✓
The exact pace for green onion can shift with sun, planting age, pruning, and Bowie-area weather.
Something Looks Different?Signs that may be worth investigating
Worth Checking
- Soft foul-smelling shanks
- Orange pustules spreading across leaves
- Leaves collapsing while soil remains moist
- Severe onion-maggot injury at the base
These signs may be worth investigating. A symptom or photo alone cannot identify the cause.
See Green Onion Through the YearA typical Bowie-area lifecycle
December–March
Winter Pause / Overwintering
Green onion may be absent, protected, or holding slowly depending on sowing date and winter severity.April–May
Spring Growth / Harvest
Green onion grows actively in cool spring conditions and can reach harvest before sustained heat.June–August
Heat Pause / Fall Establishment
Upright hollow green leaves continue from slender white shanks; established plants may flower, while new sowings stay fine and grasslike.September–November · Now
Fall Growth / Harvest
Cool weather supports steady green leaf growth and mild shank enlargement without a large storage bulb.Sources & Review InformationLocal basis and review date
This is a typical Central Maryland stage, not a guarantee for every garden or every year.
University of Maryland Extension · Central Maryland Vegetable Planting Calendar Last reviewed: September 3, 2026This is what a healthy plant typically looks like at this stage. It is seasonal reference guidance—not a visual diagnosis. Microclimate, weather, plant age, recent transplanting, pruning, and cultivar variation can change appearance.
Before you choose it
Scallions compete poorly with weeds and suffer in compacted media. Start clean and keep rows easy to cultivate.
Bowie conditions are the baseline
Container size, microclimate, cultivar, tunnel temperature, and actual weather can move the timing. Use the plant tag and direct observation with this guide.