Cucumbers need warm soil. Direct seed the 1st to 2nd week of June, once soil is warm to the touch and all risk of frost has passed. Or start indoors mid May and transplant outdoors the first week of June. Plant 3 seeds together in a clump to save space or space 6" apart in rows. Keep plants warmer over night by growing in a cold frame, or cover with a plastic cover, recycled milk jug works in a pinch, (cut off bottom of jug and remove lid) Leave cover on plant until 3rd week of june, watering underneath.