Bare root still good to ship until mid-June.
Bare root plants are dormant and are shipped without any soil on the roots and no leaves on the stems. The roots are wrapped in a medium to keep them moist during shipping however. The plants will start to grow once they are planted into warm soil and catch up to the plants in your landscape before you know it.
Bare root plants are kept dormant in our coolers so the plants still think it is winter until they are taken out and planted. Look at a cherry tree recently planted and notice the new growth coming.