Three faults ended this tree's run in American yards. Bradford pears break apart in storms, they die young, and their seed escapes into wild thickets full of thorns. Clemson Extension now says to plant no callery pear at all, and that ruling covers every Bradford on every builder's plan. The Bradford pear problems behind it are not bad luck, and they are not your pruning. You inherit them the day you plant.
"So it has to come out? That's the only shade we've got." She asked me that on a half-acre lot in central Kentucky, on heavy builder's clay. Behind her stood a Bradford that had dropped a third of itself in a February ice storm. I checked the wound, and the dark seam ran deep into the trunk. Her tree was 17 years old. A Bradford pear lifespan runs 15 to 25 years, and the breakage turns severe past age 15.
Bradford pear splitting is a joint problem. The limbs rise at narrow angles and crowd in at the same height on the trunk, so two stems compete for one spot instead of growing into one. Bark gets pinched into the seam between them. Trapped bark carries no strength, because no wood ever grows across that joint. On any tree, twin stems like these are the parts that fail first. Load the crown with ice and the seam splits open like a wedge, right down the trunk.
Speed is what sold you the tree, and speed is half the trap. A young Bradford puts on 12 to 15 feet (3.7 to 4.6 m) in 8 to 10 years, so builders lined whole streets with them. That fast wood carries a crown 30 to 50 feet (9 to 15 m) tall and 20 to 30 feet (6 to 9 m) wide. Then the limbs start dropping while the trunk still looks smooth and healthy. You get about a decade of shade, and you pay for the next decade.
Sterile was the other selling point, and that word is only half true. Your Bradford will not set fruit with its own pollen. It crosses freely with any other callery pear on the block, and Cleveland, Aristocrat and Chanticleer are planted everywhere. That cross gives you viable seed. Birds eat the small fruit and drop it along fence lines and field edges. Those seedlings come back thorny, with spines from a quarter inch (6 mm) to over 2 inches (5 cm) long. Callery pear invasive listings now cover the species and every cultivar under it, South Carolina's included.
Cleveland pear is the same species, Pyrus calleryana, sold under a different cultivar name. It crosses with Bradford to make viable seed, and it sits on the same do-not-plant guidance.
Plant something that outlives you instead. Red maple gives you fast shade on wood that holds together. Lacebark elm takes packed clay and street heat without a complaint. Japanese zelkova gives you the neat vase shape people wanted from the pear in the first place. All three show up on the extension fast-growing shade tree list, and all three are still recommended where the pear is not.
If you own one already, walk out and look up where the biggest limbs leave the trunk. Two stems of the same thickness in a tight V, with a dark seam of bark between them, show you where your tree will come apart. Take out a Bradford under 10 years old now, while the stump is small and a new tree can catch up fast. Past year 20 the next ice storm makes the call for you. Most Bradford pear problems end that way.
Read the full article: Fast Growing Trees: What Speed Really Costs
