How to Grow Cucumber
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🛠️ Supplies You'll Need
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🌿 Plant Overview
☀️ Growing Requirements
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Sun
Full Sun (6-8 hours)
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Water
High (consistent moisture)
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Spacing
36" apart
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Depth
1" deep
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Height
12-72"
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Germination
3-10 days
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Common Cucumber Varieties
Popular cultivars to look for at your local nursery or seed supplier.
Straight Eight
Classic slicing cucumber with smooth, straight fruits 8 inches long; an American garden staple.
Marketmore 76
Dark green, disease-resistant slicer; one of the most widely grown home garden cucumbers.
Persian Mini
Thin-skinned, seedless 4–6 inch cucumbers with crisp texture — no peeling needed.
Lemon
Round, yellow-skinned heirloom with mild, sweet flavor and crisp texture; great for salads.
National Pickling
Short, blocky fruits with thin skin, bred for brining and pickle making.
English Telegraph
Long, seedless greenhouse-type cucumber with delicate skin and mild flavor.
Days-to-maturity figures are approximate and vary by climate and growing conditions.
Common Cucumber Problems
What to watch for — and how to fix it before it spreads.
Pests
Striped or spotted yellow-green beetles that eat seedlings and spread bacterial wilt disease.
Use row covers until flowering; plant resistant varieties; apply kaolin clay.
Cluster on undersides of leaves, causing stunting, yellowing, and sticky honeydew.
Spray insecticidal soap; encourage ladybugs and lacewings by planting flowers nearby.
Thrive in hot, dry conditions; cause stippled yellow leaves and fine webbing on undersides.
Keep plants well-watered; spray neem oil; avoid dusty conditions in the garden.
Larvae tunnel into the base of vines, causing sudden wilting and vine death.
Wrap stem base with foil; plant after peak moth flight (mid-July in many zones).
Diseases
White powdery coating on leaves, most common in warm days/cool nights — reduces yield late season.
Improve air circulation; plant resistant varieties; apply baking soda or potassium bicarbonate spray.
Spread by cucumber beetles; plants wilt suddenly and die. Confirm with the "stringy thread" test: cut a stem, touch both ends together, then pull apart slowly.
Control cucumber beetles aggressively; remove and destroy infected plants immediately.
Yellow angular patches on leaf tops with gray-purple mold on undersides; spreads rapidly in wet weather.
Water at soil level; space plants well; apply copper fungicide preventively in humid climates.
Common Mistakes
Yellow, overripe cucumbers signal the plant to stop producing — harvest cues the plant to make more.
Pick slicers at 6–8 inches, picklers at 2–4 inches; check plants every 1–2 days.
Cucumbers are heat-loving; cold soil stalls germination and invites rot.
Direct sow only when soil is 65°F+; use black plastic mulch to warm soil in cool climates.
Female flowers drop without setting fruit when pollinators are scarce.
Plant flowers nearby; hand-pollinate by transferring pollen with a small brush if bees are absent.
🌾 Seed Saving Guide
🟡 ModerateWhen to Harvest Seed
Leave a cucumber on the vine well past edible stage until it turns yellow or orange and starts to shrivel.
Processing
Scoop seeds into water, ferment 3 days, rinse, spread on screen to dry for 2 weeks.
Seed Viability
Up to 5 years when stored cool, dark, and dry.
Pro Tip
Cucumbers cross freely between varieties. Isolate by 500 feet or hand-pollinate and bag flowers to keep varieties pure.
Seed Storage Supplies
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Raised Bed Planting Guides
A 4×8 bed fits 3 plants of Cucumber. See plant counts, spacing grids, and companion pairings for every bed size →
Cucumber Planting Calendar by Zone
Cucumber Planting Calendar by State
Other Plants
Frequently Asked Questions
When should I plant Cucumber? +
Sow Cucumber seeds directly in the garden 6 weeks before your last frost date. Use the search on this page to find exact dates for your location.
How long does Cucumber take to grow? +
Cucumber typically matures in about 55 days from planting. Exact timing varies by variety, soil conditions, and local climate.
Should I start Cucumber indoors or direct sow? +
Cucumber does best when direct sown outdoors. Plant seeds directly in the garden at the appropriate time based on your local frost dates.
How much sun does Cucumber need? +
Cucumber requires full sun (6-8 hours) to thrive.
How far apart should I plant Cucumber? +
Space Cucumber plants 36 inches apart to allow adequate airflow and root development.
How much water does Cucumber need? +
Cucumber has high (consistent moisture) water needs. Consistent moisture is important especially during germination and early growth.
Can you save seeds from Cucumber? +
Yes — seed saving difficulty for Cucumber is rated moderate. Leave a cucumber on the vine well past edible stage until it turns yellow or orange and starts to shrivel. Scoop seeds into water, ferment 3 days, rinse, spread on screen to dry for 2 weeks.
How long do Cucumber seeds last in storage? +
Properly dried and stored Cucumber seeds remain viable for up to 5 years. Store in a cool, dark, dry location in an airtight container with a silica gel packet for best results.
Are Cucumber seeds open-pollinated? +
Yes — Cucumber is open-pollinated, meaning seeds saved from your harvest will grow plants true to the parent variety. This makes it an excellent candidate for building a self-sustaining garden.
About Cucumber
Refreshing summer vegetable for salads and pickling. Can be grown on trellises to save space.
Expect your Cucumber to be ready for harvest in approximately 55 days from planting.
Use the search above or browse by zone or state to find the perfect planting dates for your location.