When can I plant cucumbers in the garden?

Question: 

When can I plant cucumbers in the garden?

Answer: 

Cucumbers are a warm-season crop.  Plant cucumbers after the danger of frost is past and soil temperatures have warmed to 60 to 70 degrees Fahrenheit.  In central Iowa, cucumbers may be planted in mid-May.  Gardeners in southern Iowa can plant 1 week earlier.  Plant 1 week later in northern portions of the state.  The last practical date to sow cucumbers is July 20. 

Cucumbers are normally planted in “hills.”  Plant 4 to 5 seeds per hill at a depth of 1 inch.  Later, remove all but 2 or 3 plants per hill when seedlings have 1 or 2 true leaves. 

Hills of cucumbers should be spaced 3 to 5 feet apart within the row.  Rows should be 4 to 5 feet apart.  For bush varieties, a three-foot spacing between hills and rows should be adequate. 

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