Clair Keene, a researcher at The Pennsylvania State University, and her colleagues wanted to find the perfect time to crimp-kill a cover crop: grown long enough to make biomass adequate to suppress weeds, but not far enough along to make seeds.
This handout from the Oklahoma Beginning Farmer and Rancher Program shows, for a variety of vegetable crops:
– whether to transplant or direct seed,
– for transplants, days from indoor to outdoor and first and last dates for indoor starting,
– planting date relative to first frost date, and
– first and last dates for field planting.
Equivalent information is also given for fall planting.
Author: Kerr Center staff