Should I remove or save my american sycamore?
American Sycamore isn't a habitual problem species, so a sound one is usually worth an opinion before it comes out. It is the largest thing in almost any yard it occupies, and the one where entirely normal behavior generates the most wasted service calls — the peeling white, tan and gray bark that people report as disease is simply how the tree grows. What actually matters is scale: this is one of the most massive hardwoods in eastern North America, and it was routinely planted twenty feet from houses in the 1960s and 70s.
How to tell which one you've got
Sycamore anthracnose is the single most common misdiagnosis on this species. A cool wet spring — average daily temperatures below roughly 55°F at leaf-out — produces shoot blight, angular brown lesions following the leaf veins, and near-total early defoliation that looks fatal, but the tree refoliates by early summer and is fine. Real decline is a crown that never refills after midsummer, dieback progressing across consecutive years, and cankering or bleeding on the trunk; repeated hard anthracnose years also leave a permanently gnarled twiggy branch structure from all the killed shoot tips.
The structural question
Sycamore took 7.1% severe damage in the ISA ice-storm survey, toward the high end, and the same study found severe damage jumps sharply on trees over 24 inches DBH — 17.1% versus 1.3% for trees under 12 inches. The failure mode is not brittleness so much as leverage: a mature sycamore rarely fails at the trunk, it releases a single thirty-foot horizontal limb, which is why the damage is so severe and why deadwooding a big one is money genuinely well spent here.
Related
- How much does it cost to remove an american sycamore?→
- When should an american sycamore be pruned?→
- Are american sycamore roots a problem for foundations or pipes?→
- Is my american sycamore dying or just stressed?→
- How does an american sycamore hold up in a storm?→
- How much does it cost to remove an american basswood?→
- Should I remove or save my american basswood?→
- When should an american basswood be pruned?→