Spring seedings have the best chance of producing a large grass seed crop the following year. Grass Establishment A soil test should be taken to determine fertilizer carryover from previous crops. Adjustments should be made for residual nitrogen from previous crops. Kentucky bluegrass seed crops are usually planted in 12-14 inch rows. Distinct rows make weed control and roguing easier.
Wider rows make inter-row spraying possible.
The crop should be planted at a time when conditions favor seed germination and emergence. This occurs in the spring and late summer when day and night temperatures are lower. However, some cultivars seeded in early August will not have a long enough juvenile period, and in some years with cold fall weather no varieties may grow enough to produce a good seed crop the next year. Attempts to intercrop turfgrass seed production fields during the establishment year are not recommended. If the turfgrass is planted in the spring following fall harvested crops, seedbed preparation is not as rushed and chances of having an ideal seedbed are higher, but the producer is losing one crop harvest.