Betula nigra Dura-Heat« 'BNMTF' (Dura-Heat« River Birch)
Holds its yellow autumn leaves a full month longer than Heritage«. Has glossier leaves, a tighter habit, and better heat tolerance than Heritage« in Zone 9. You already know Earl Cully's Heritage« is a money-making super tree. Try this one for comparison, especially if you're in the Gulf States.
Betula nigra Heritage« 'Cully' (Heritage« River Birch)
Selected by Earl Cully almost 20 years ago for its outstanding peeling bark, extreme hardiness, resistance to borers, and ability to grow in waterlogged or dry soils.
Whether you clump them in a container or grow them as singles, this is among the easiest of plants to finish: even our smallest liners can grow to 5-6 ft. in a single season. Named Urban Tree of The Year for 2002 by the Society of Municipal Arborists.