More in spring until mid summer. Late summer they can get a little scarce depending on heat and drought.
I’ve heard mixed reviews on fall/winter usage from folks I’ve talked to, but having the protein out there for Spring/Summer would be a huge plus.
I usually drill or top sow grain in with it for winter.
When top sowing, which grain and how much do you use?
Abruzzi or Elbon rye/wheat.
Oats do better if drilled into the ground.
I normally plant about 65-70 lbs to the acre in grains when establishing clover. If I’m planting into existing clover I go about 50 lbs. Some people go heavier. I’m just looking for a little supplement to the clover, not something to outcompete it.