Spacemaster

Cucumber

55d to harvest

Cool, crisp flesh with a clean, bright snap—Spacemaster cucumber delivers a refreshing bite and a subtly sweet, garden-fresh flavor in every slice. Its medium-dark green fruit stays pleasantly firm with a smooth, even skin, making it a standout for slicing and showcasing in salads and fresh platters. Grow it for dependable midsummer harvests and a tidy, space-smart performance that keeps your vines productive.

Crop Dates

Milestone	Date
Start Indoors	May 15th
Last Frost	May 15th
Transplant / Sow Outdoors	May 29th
Harvest Begins	Jul 23rd
Harvest Ends	Sep 24th

Crop Details

Trait	Value
Days to Maturity	55
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	75
Min Soil Temp (°F)	70
Min Night Temp (°F)	55
Harden Off (days)	12

Frequently Asked Questions

What pest or disease problem commonly affects Cucumis sativus (cucumber), and how do I treat it?

Powdery mildew is a frequent issue on cucumber leaves, especially as days warm and foliage stays humid. Start treatment at the first white, powdery patches by spraying a labeled potassium bicarbonate or horticultural sulfur product, ensuring full coverage of leaf undersides, and remove the most heavily infected leaves to slow spread. Space plants for airflow and avoid wetting foliage when watering to reduce repeat outbreaks.

How often should I water cucumber (Cucumis sativus) during the main growing phase?

During fruiting, keep the soil evenly moist—water about 1–2 times per week so the top 1–2 inches stay damp, and increase frequency during hot, windy weather. Aim for deep watering at the base (not on leaves) because cucumber roots need consistent moisture to prevent bitter or misshapen fruits. If you let the soil dry out between waterings, cucumbers often develop uneven growth and quality.

How can I tell when Spacemaster cucumber (Cucumis sativus) is ready to harvest?

Harvest when fruits are firm and crisp, typically about 55 days from sowing, and pick them young—most slicing cucumbers are best around 6–8 inches long (check your seed packet for the target size). Use a gentle twist or cut with scissors, and harvest regularly (every 1–2 days in peak production) to encourage continued flowering and new fruit growth. If fruits start to yellow or grow past the ideal length, they become more seedy and less crisp.