When can radishes be planted in Iowa?

Question:

When can radishes be planted in Iowa?

Answer:

Radishes can be planted as soon as the ground can worked properly in spring.  This is often late March in southern Iowa and mid-April in northern counties.  Successive plantings can be made every 7 to 10 days through May.  Radish plants flower and their roots become pungent with the onset of hot weather.  Several plantings can also be made in late summer (late August to late September) for a fall crop. 

Sow radish seeds ½ inch deep in rows that are 12 inches apart.  When the seedlings emerge, thin the planting so remaining plants are 2 inches apart.

Learn more about growing radishes in this article: Growing Radishes in Iowa