The row may be marked by mixing in a few radish seeds. Do not use seed more than 1 year old. Rapid growth is needed for good quality roots. After thinning, apply a 2 inch mulch. Parsnips form seedheads prematurely if poorly grown.
Harvest parsnips any time they are of sufficient size.
The flavor is improved by exposure to cold temperatures. This information is for educational purposes only. References to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. This information becomes public property upon publication and may be printed verbatim with credit to MSU Extension. Reprinting cannot be used to endorse or advertise a commercial product or company.