Darryl wrote:
I planted two bare-root sugar maple trees (3-4' high) about 3-4
weeks ago, & they still haven't shown a sign of green.

How long should I wait for leaf buds before concluding that they
died?

July is not the proper time to plant bare root trees. They were
probably already dead when you put them in the ground.

--

Travis in Shoreline (just North of Seattle) Washington
USDA Zone 8
Sunset Zone 5