Cucumber
Cucumis sativus
Cucumbers are the warm-season prairie vine that rewards patience: direct-sowing too early into cold soil rots the seed, but planted into warm soil after last frost the plants leap into production within 50 to 60 days. Two main types for Edmonton: slicing cucumbers (Marketmore 76, Straight Eight, Burpless Tasty Green, English-type Telegraph and Diva for greenhouse / unheated tunnel) and pickling cucumbers (Boston Pickling, National Pickling, Pioneer; smaller fruit, picked young, prolific). Cucumbers grow on either bushy plants (modern compact hybrids for containers) or sprawling vines that climb 1.5 to 2 m on a trellis (the prairie standard for clean, straight fruit and easier picking). Heavy feeders and heavy drinkers: warm rich soil, consistent water, and full sun produce the best yields. The most common Edmonton cucumber problem is bitter fruit, almost always caused by uneven watering or heat stress; cure with mulch, deep watering twice a week, and morning shade in extreme heat. Powdery mildew arrives in mid-August on most years; resistant varieties (Diva, Marketmore 97) extend the season.
Quick Facts
Distribution
Warm-season annual across Alberta. Native to the Indian subcontinent.
Light
Full sun.
Bloom Time
Yellow flowers from July through September
Soil
Rich, deep, well-drained loam with high organic content. Compost or aged manure at planting.
Water
High. Consistent deep watering twice weekly. Drought stress and erratic water cause bitter fruit and increased disease.
Growing & Cultivation
Best Planting Time
Direct-sow late May after soil reaches 18 C, or start indoors 3 to 4 weeks before last frost and transplant carefully (cucumbers resent root disturbance, so use peat or coir pots that go in whole). Plant out late May to early June.
Propagation
Direct seed 2 cm deep, 30 cm apart along a trellis, or in hills of 3 to 4 seeds thinned to the strongest 2. Germinates in 5 to 10 days at 21 to 27 C.
Pruning / Splitting
Train vining types to a trellis for clean fruit and easier harvest. Pinch lateral side shoots in greenhouse-grown types for better airflow. Harvest fruit every 1 to 2 days at peak; over-ripe fruit signals the plant to stop producing.
Seed Collection
Let one or two fruits over-ripen on the vine until they turn yellow-orange and the skin starts to soften. Scoop seed into a jar with water, ferment 2 to 3 days to dissolve the gel coat, rinse, dry, store cool. Open-pollinated varieties save true; hybrids do not.
Spacing
30 cm along a trellis, or 45 cm in hills.
Always verify plant identification with multiple sources before consuming any wild plant. This information is for educational purposes only.
