Timing
Start seeds indoors 3-4 weeks before transplanting outdoors into warm soil. Bottom heat can help with germination. Transplant outdoors once plants develop their third true leaf. Ensure any risk of frost has passed.
Starting
Sow 2-3 seeds, 1 inch (2cm) deep. Thin to one plant per pot once seedlings reach 3-4 inches tall, typically around the time they have their third true leaf. Keep the strongest seedling and cut the others at the base to ensure they are not competing for resources.
Growing
Cucumbers are ready to transplant outdoors once the risk of frost has passed and they are around 2-3 inches tall, have a sturdy stem & a third true leaf. This is usually 3-4 weeks after sowing.
It's important to harden off the seedlings for about a week before transplanting to prevent transplant shock. Gradually expose seedlings to the outdoors, starting with a few hours of shade and increasing sun exposure and duration.
Cucumbers prefer warm, well draining soil. Aim to use a 5-gallon pot (12-inch diameter & 12-inch depth minimum) with drainage holes and place it in a location that receives 6-8 hours of sunlight per day. Ensure soil stays moist but not soggy. Trellis or fence support are beneficial.
Harvest
Cucumbers are typically ready for harvest after 50-70 days, when they are 6-8 inches long with a dark green skin. It's recommended to pick them on the earlier side for better taste and softer seeds. Harvesting when they are too large can result in a more bitter bite and harder seeds. Pick the cucumbers regularly to encourage continued production.