It depends on when you want it to reseed. By the middle to late of this month it will turn brown and die. BUT,.. the seed heads will start dropping part of the seeds alittle before dieoff. If you go in after dieoff and mow , then disc it under ,.. it will reseed right then. Summer crop is not as productive,. but it will grow with regular rainfall. Discing is the key,. it will not reseed without discing or turning it under. If you choose to leave it ,.. or mow it and just topsow buckwheat,.. you can then go in at september and disc it and it will reseed at that time. Of course,. if you topsow buckwheat ,. you will get the buckwheat and crimson to reseed for a fall plot. Hope that answers your question steven!!
As a side note,.. i always liked mixing in arrowleaf with it. Here's why!! I don't like long gaps for forage production in my plots. Like yourself,.. i have small farm ,. and not large plots. Consistent production is important from every plot i have available for my deer. The crimson dies in mid may,.. the arrowleaf lasts til first of july,.. mow it down first of july and topsow buckwheat,. buckwheat last 45 to 60 ,.. that puts me right in my planting window of labor day weekend. With this mixture ,. i only have a few weeks out of the whole year my food plots are not producing valuable high quality forage. Long gaps in between annual plantings can hurt small farm managers. The more you can keep that high quality forage there,.. the more likely they are to pattern to it consistently. A long gap could possible change a pattern. In which,. could hurt your hunting,. but more important hurt your camera census. This is why i have pulled away from annual summer planting such as soybean, lablab,etc. It produces a long gap to get started with preparing the plot and establishing the plot for production. For me,. a long gap is counterproductive just for small farm managers in every way for producing the result we seek from our efforts.