How to Grow Spacemaster Cucumber
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Spacemaster Cucumber
Cucumis sativus 'Spacemaster'
vegetableSpacemaster is a compact, bush-type cucumber variety bred specifically for container and small-space gardening. It produces dark green, crisp cucumbers 6-8 inches long on a dwarf plant that reaches only 12-24 inches in height. This prolific variety is ideal for patios, balconies, and small garden spaces.
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Example Spacemaster Cucumber timeline · Pittsburgh, PA (Zone 6b)
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Plant Spacemaster Cucumber
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Spacemaster Cucumber
Around Jun 6≈ 50 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Spacemaster Cucumber dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 4-10; can be grown as annual in zones 3-4
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Get my Spacemaster Cucumber timeline →Growth Stages
Seedling
7-10 daysTwo cotyledons emerge and develop first true leaves. Plant is small and tender with delicate stems.
Keep soil warm (70-80°F) and consistently moist. Provide bright light. Thin to strongest seedling if direct sowing. Transplant when 2-3 true leaves appear.
Vegetative Growth
3-4 weeksPlant develops bushy, compact growth with multiple leaf nodes. Vining is minimal; plant remains low and dense.
Maintain consistent watering and apply mulch. Feed with balanced fertilizer every 2 weeks. Monitor for pests. Stake lightly if needed in containers.
Flowering
2-3 weeksYellow flowers appear at leaf axils, with both male and female flowers. Flowers are followed by small developing fruits.
Ensure adequate pollinator activity or hand-pollinate. Continue regular watering and feeding with phosphorus-rich fertilizer to encourage fruiting. Maintain consistent temperatures.
Fruiting
4-6 weeksSmall cucumbers develop rapidly from flowers. Multiple fruits mature simultaneously on compact plant.
Harvest regularly (every 2-3 days) to encourage continuous production. Keep plant well-watered during fruit development. Fertilize every 10 days with diluted liquid fertilizer.
Peak Production & Harvest
4-8 weeksPlant produces maximum yield of 6-8 inch cucumbers. Continuous flowering and fruiting continues with proper care.
Harvest immediately when cucumbers reach desired size. Remove yellowing leaves. Continue consistent watering and feeding. Watch for pest damage on mature fruit.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Use row covers early in season. Apply neem oil or insecticidal soap. Handpick adults. Plant trap crops like nasturtium.
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Ensure good air circulation. Apply sulfur dust or potassium bicarbonate spray. Remove infected leaves. Water at base, not overhead.
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Spray with water to dislodge. Apply neem oil or insecticidal soap weekly. Increase humidity around plant.
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Spray with insecticidal soap or neem oil. Introduce ladybugs or lacewings. Reflective mulch may deter.
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Remove infected leaves immediately. Apply copper fungicide. Ensure adequate air circulation. Avoid overhead watering.
Uses
Fresh eating and salads
CulinarySpacemaster cucumbers are crisp and tender, ideal for fresh eating straight from the garden, slicing into salads, or serving as crudités. Their compact size makes them perfect portion-controlled vegetables. [source]
Pickling
CulinaryThe firm texture and small, manageable size of Spacemaster cucumbers make them excellent for home pickling and fermentation projects. They produce consistent pickle products. [source]
Container and urban gardening
HouseholdBred specifically for space-limited environments, Spacemaster thrives in pots and containers on patios, balconies, and windowsills, making fresh cucumbers accessible to apartment dwellers. [source]
Hydration and skin care
MedicinalCucumbers are 95% water and contain beneficial compounds like silica. Fresh cucumber can be used in face masks and consumed for hydration and skin health benefits. [source]
Pollinator attraction
WildlifeThe bright yellow flowers attract bees and other pollinators to the garden, supporting broader ecosystem health and supporting 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
Pick cucumbers when 6-8 inches long and dark green for best quality and taste. Harvest every 2-3 days to maintain production; leaving overmature fruit on the vine reduces flowering. Use a knife or pruners to avoid damaging the plant. Cucumbers continue producing until frost.
Fun Facts
- 🌱 Spacemaster was specifically developed by the University of New Hampshire for growing in small spaces and containers, making it one of the most compact cucumber varieties available.
- 🌱 A single Spacemaster plant can produce 25-30+ cucumbers over a growing season if harvested regularly, making it extremely prolific despite its small size.
- 🌱 Cucumbers are botanically fruits (berries) but culinarily treated as vegetables, and they're best harvested while still green and immature for optimal tenderness and flavor.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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