Starting a clover plot now for me would be an exercise in expedition considering the date. Your actual location may help and your method is going to be critical. Also consideration should be given to exactly what you want from a clover plot. Newer Annuals can outperform the most expensive perennial blends.
There is a process to establishing a good solid perennial clover plot that will perform year round and remember all clover plots require maintenance. Done well, you will be very happy and proud with a successful clover plot.
If you have any actively growing matter now spray kill it now. Ideal is to plant no till, either by drill or frosting it in if possible. If you use tillage minimize it. Take your soil samples, you can amend later but pelletized lime works fast and helps distribute seed more evenly if broadcasted. Most of my small clover plots start with wheat or cereal rye at 100 lb / acre then straight 4 lb crimson, 8 lb
ladino and 4 lb arrowleaf. Durana is a good candidate to add next fall, its expensive and should be planted when it has the best opportunity to succeed. The crimson is an annual but its inclusion will give you clover for turkey season and help feed your wheat. Like
@deerhunter10 said above fall is the best time to plant clover plots. This is due to root development and tillering of the cereal grains which better insulates the ground. Planting much later than right now is betting hard on good rainfall for the summer. I would not plant clover after the first week of April opting for late august instead. Varieties are great and can be used to keep clover plots full and lush all year in most circumstances. I have several clover blend plots and love them but I do my due diligence and keep them sprayed, mowed and interseeded.
BUT!
You should consider another option as well. Search posts on here by me and others using the word Balansa.
I have started using this amazing annual clover in my soil building blends and have now 10 acres of straight Balansa clover. It is a cool season annual that simply will not give up. Its vining and can easily be knee deep. I have picked up vines that came to my shoulder. Deer and all other game browse it well and it takes it very well, almost seems to like it. With this mild weather mine has been lush and green all winter. We have it on our dove field and I love it. It dies in August, I mow the field then Spray with roundup September 1 for dove season. Come October cool nights and you discover how wonderful this clover is at reseeding itself. Easily over 200 lb per acre. And yes it will keep up with fall browse if you get rain. I do drill wheat or cereal rye into it after dove season to keep any bare spots filled in and be more attractive to deer but no worries the balansa will outcompete the wheat next spring.
Let us know what you do and dont forget the pictures.