WHAT IT IS
Summer Squash
A bush-form Cucurbita harvested immature as zucchini, yellow squash, pattypan, or specialty summer squash.
HIGH TUNNEL + CONTAINER
Summer Squash
Rich + high capacity
Summer Squash
Cucurbita pepoA large-volume, aerated mix for early zucchini, yellow squash, and specialty summer squash.
Deep + consistent pH 6.0–6.5
GROWING GUIDANCE FOR
Central Maryland / BowieLocal Bowie-area baselineAt a Glance
Is Summer Squash 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 productive sunny crop when you can dedicate a wide ten-gallon container, support pollination, and harvest small fruit several times each week.
QUICK PROFILE
What to plan for
- Plant type
- Vegetable
- Life cycle
- Warm-season annual
- Sunlight
- Full sun
- Container
- 10+ GAL
- Water
- Deep + consistent
- Target pH
- 6.0–6.5
BEST TIME TO PLANT OUTDOORS
Bowie planting window
- Ideal
- May–mid-June
- Avoid
- Frost and cold soil
RIGHT NOW
Wait before planting outdoors
The next recommended Bowie-area window is May–mid-June. Direct sow after frost into warm soil. A small second sowing can replace plants lost to pests.
UMD places summer squash sowing from May through mid-June. Warm soil gives fast emergence and reduces seed decay.
Can I plant this now?
- Current recommendation
- Wait before planting outdoors
- Current window
- Outside the recommended window
- Next best window
- May–mid-June
- Guidance location
- Central Maryland / Bowie
- Regional coverage
- Central Maryland coverage
- USDA hardiness zone
- 7b
- Planting method
- Direct sow outdoors
- Cold tolerance
- Very frost sensitive
- Minimum soil temperature
- 60°F
Direct sow after frost into warm soil. A small second sowing can replace plants lost to pests.
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
Late Harvest / Seasonal Decline
Typical stage for September in Central Maryland
Healthy plants may still flower and fruit in September, though mildew and shorter days reduce production before frost.
Normal Right Now
- ✓
Slower summer squash growth with shorter days is normal before frost ends the crop.
- ✓
Productive upper growth can remain green while older lower leaves look worn.
- ✓
The exact pace for summer squash can shift with sun, planting age, pruning, and Bowie-area weather.
Something Looks Different?Signs that may be worth investigating
Worth Checking
- A split or frass-filled stem base
- Sudden wilt despite adequate moisture
- Fruit rotting from the blossom end before harvest
- Mosaic distortion across new leaves
These signs may be worth investigating. A symptom or photo alone cannot identify the cause.
See Summer Squash Through the YearA typical Bowie-area lifecycle
December–March
Outside the Outdoor Season
Summer squash is frost tender, so a living outdoor crop is not expected in Bowie during winter.April–May
Establishment / Vegetative Growth
Summer squash develops new leaves, roots, and support structure after outdoor temperatures become reliably warm.June–August
Flowering / Harvest
A broad prickly-leaved plant produces large yellow blossoms and rapidly enlarging squash near the crown.September–November · Now
Late Harvest / Seasonal Decline
Healthy plants may still flower and fruit in September, though mildew and shorter days reduce production before frost.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
The canopy is large, thirsty, and prone to powdery mildew. One plant can occupy substantial tunnel or garden space.
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.