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Professionally, I’m a retired professor of accounting and former chair of the School of Accounting at the University of South Carolina’s Moore School of Business. My academic work explored how people make decisions in complex systems, especially when information is imperfect or overwhelming. I’ve published in a fair number of journals that few people read voluntarily, and I spent decades thinking about how technology shapes human behavior. These days, my time is divided between managing a small flock of chickens, herding goats, chatting on amateur radio (KO4LMP), and living just on the edge of the grid—literally and metaphorically. I’m a father to five daughters, a grandfather to 17, and a great-grandfather to three. Somewhere along the way, I realized that what I enjoy most is simply talking about the world we live in—and how to make sense of it.

🍐Bradford Pears and the Fire Blight in Pear My Trees

After pruning several times, it looks like I’m fighting a losing battle with this pear tree. My understanding is that the disease is brought by our bees from neighboring Bradford Pears.

ChagGPT said:

Unfortunately, I think you’re probably right. Looking at your photo, the symptoms are very characteristic of fire blight, and they’re severe.

Here’s what I see:

  • The entire central leader is dead, with the leaves still attached and blackened rather than dropping off. That’s a classic fire blight symptom.
  • Several smaller upright shoots have also died back.
  • The lower scaffold branches are still alive and producing fruit, so the infection hasn’t yet killed the entire tree.
  • The amount of dead wood suggests this isn’t just one small infection—it has likely moved well down the main trunk.

About the Bradford pear connection

Your understanding is essentially correct.

Bradford pears (Callery pears) are notorious reservoirs for fire blight. Every spring:

  • They bloom heavily.
  • The bacteria multiply in infected blossoms.
  • Bees, flies, and rain splash move the bacteria to nearby pear and apple trees.

The bees aren’t “infecting” the tree in the sense of carrying a disease intentionally—they’re simply transporting bacteria while pollinating. If your neighbors have ornamental Bradford pears that routinely get blossom infections, they provide a continual source of inoculum.

Can this tree be saved?

From this picture, I’d give it poor odds.

Normally, when fire blight is caught early:

  • prune 8–12 inches below visible infection,
  • disinfect tools,
  • remove infected wood,
  • avoid heavy nitrogen fertilizer.

But your tree has already lost its entire leader.

That means the bacteria likely traveled into older wood, not just young shoots.

What I would do

If this were my tree:

  1. Scratch the bark on the trunk below the dead section.
    • Green cambium = still alive.
    • Brown cambium = dead.
  2. Follow the dead trunk downward.
    If the canker extends into the trunk below where the major limbs originate, I would remove the tree.
  3. If the trunk is still healthy below the infection, you could:
    • cut the tree back below the dead leader,
    • train a vigorous new shoot as the central leader.

However, that would essentially mean rebuilding the tree over several years.

Long-term considerations

Since you’re in South Carolina, fire blight pressure is naturally high because of the warm, humid spring weather.

If you decide to replace this tree, I’d recommend planting one of the more resistant varieties instead of another susceptible European pear. Some of the better choices include:

  • Harrow Sweet
  • Harrow Delight
  • Moonglow
  • Potomac
  • Warren (developed in Mississippi and performs well in the Southeast)

These aren’t immune, but they generally withstand fire blight much better than varieties like Bartlett.

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