If they both had foliage this spring then the hail storm hit I'd give them some more time. The suckers, and you were right to cut them, were a sign the roots were fine but something up top was wrong.

Personally I think its a long shot. The next prime planting season isn't till the fall anyway though.

So you think that if there is nothing by fall I should replace them?

Where are you located? Ornamental cherries can have a whole host of problems, including being subject to later winter frosts in colder climates.

IME, trees that do not leaf out properly in spring (or subsequently after some foliar damage from hail, etc.) and have NO leaves now are generally dead or well on their way to it.

if bigboxstore.. return for refund ...

if they still have some GOOD ones in stock.. you might exchange.. but i wouldnt plant them until fall ...

those are not babies.. they are at least .. or were at least ... 5 to 7 year old trees ...

when during the summer did you plant them ... and how did you plant them ... the heavy grass around them seems odd to me.. did you use manure or something to amend the planting hole ...

ken