How to Grow Long Green Cucumber

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Long Green Cucumber

Cucumis sativus

vegetable

Long Green is a classic slicing cucumber variety that produces dark green, elongated fruits typically 8-10 inches long. Known for its crisp texture and mild flavor, it's ideal for fresh eating, salads, and pickling. This vigorous vine produces abundant yields throughout the growing season.

When should you plant Long Green Cucumber in your zone?

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Example Long Green Cucumber timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Long Green Cucumber

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Long Green Cucumber

    Around Jun 6

    ≈ 50 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Long Green Cucumber dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily minimum
💧
Water: Consistent moisture, 1-2 inches per week; water deeply at soil level to avoid fungal issues; more frequent watering needed during hot weather and fruiting
📏
Spacing: 12 inches
📅
Days to maturity: 50-70 days from transplant
🌱
Planting depth: 1 inch for seeds; transplants at soil line

Soil

Type: Well-draining loamy soil rich in organic matter
pH: 6.0-7.0
Amendments:
compost aged manure peat moss perlite for drainage

Growing Zones

Find your zone →

Thrives in zones 4-9, grown as annual in cooler zones

3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a

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Growth Stages

1

Seedling

2-3 weeks

Emerge with cotyledons in 7-10 days; develop true leaves with serrated edges; vine is tender and compact

Maintain warm soil (70-85°F); keep consistently moist; provide 12-14 hours of light; thin to strongest seedling if direct seeding

2

Vegetative Growth

3-4 weeks

Vigorous vine development with multiple side shoots and tendrils; large lobed leaves appear; plant establishes runner structure

Establish support trellis or let sprawl; maintain consistent watering; avoid overhead watering; fertilize every 2-3 weeks with balanced fertilizer

3

Flowering

1-2 weeks into fruiting

Yellow flowers appear at leaf nodes; both male and female flowers present (more males initially); flowers open in morning

Ensure consistent water supply; provide bee access or hand-pollinate if needed; avoid high nitrogen fertilizer which promotes leaves over flowers

4

Fruiting

4-6 weeks of peak production

Small green cucumber develops from female flower; rapidly elongates to 8-10 inches over 10-14 days; skin darkens to deep green; bumpy texture on skin

Pick fruits every 2-3 days to encourage continued production; provide consistent deep watering; maintain support structure; watch for powdery mildew

5

Mature/Harvest Ready

Ongoing throughout season

Fruit reaches full length (8-10 inches) with dark green color and slight firmness; becomes bitter and yellows if overripe

Harvest in early morning; cut rather than pull to avoid vine damage; use within days for best crispness; continued harvesting extends season

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

aromatic herbs (sage, rosemary) potatoes fennel

Common Pests

  • Row covers on young plants; yellow sticky traps; neem oil spray; encouraging beneficial insects like ladybugs

  • Regular misting to increase humidity; insecticidal soap; neem oil; avoid overhead watering that reduces mites

  • Improve air circulation; sulfur dust or wettable sulfur spray; baking soda solution (1 tbsp per gallon); remove infected leaves

  • and

    Beer traps; copper tape around stems; hand-picking; diatomaceous earth barriers; removing hiding spots

  • Yellow sticky traps; reflective mulch; insecticidal soap; neem oil spray on leaf undersides

Uses

🍳

Fresh Slicing & Salads

Culinary

Long Green cucumbers are excellent for fresh consumption, slicing into salads, and sandwiches due to their crisp texture and mild flavor. The thin skin is edible and requires no peeling. [source]

🍳

Pickling

Culinary

The firm flesh and size make Long Green varieties suitable for pickling whole or sliced. They hold their crunch well through the pickling process and develop excellent flavor. [source]

🏠

Skincare & Spa Applications

Household

Cucumber slices applied to eyes reduce puffiness and provide hydration. The high water content (95%) and silica make them popular in facial masks and spa treatments. [source]

💊

Hydration & Digestive Health

Medicinal

Rich in water and containing compounds supporting digestion, cucumbers promote hydration and gentle gastrointestinal support. Traditional medicine values them for cooling properties. [source]

🦋

Pollinator Support

Wildlife

Cucumber flowers attract and feed beneficial pollinators including bees and other insects, supporting broader garden ecosystem health and fruit production. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest when cucumbers reach 8-10 inches in length and have dark green color; pick every 2-3 days in early morning for best crispness; cut with pruning shears rather than twisting vines; smaller fruits (6-8 inches) are more tender; harvest regularly to encourage continued production; overripe fruits become bitter and yellow-green and should be removed to redirect plant energy

Fun Facts

  • 🌱 Long Green cucumbers are technically berries, not vegetables, botanically classified as pepos—a type of modified berry with a thick, hard rind.
  • 🌱 Cucumber plants can produce fruit for 3-4 months with consistent harvesting; the more you pick, the more the plant produces as it attempts to mature seeds.
  • 🌱 The vining growth habit allows vertical gardening, saving space while improving air circulation and reducing disease pressure compared to sprawling plants.

Gardening Terms

New to gardening? Learn about terms used in this guide:

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