Flowering Pear Trees: 3 States Have Already Banned Bradford Pears (More Are Coming) — 6 Better Trees to Plant Instead
Only 3 states have banned flowering pear (Bradford pear) sales so far. See why they split, why they smell, and 6 native trees to plant instead.
Every April, the same white-blooming street trees show up in local news stories — not for their flowers, but for their smell, their tendency to split in half, and now, increasingly, for being illegal to buy. The flowering pear tree, sold for seventy years under names like Bradford, Cleveland Select, and Aristocrat, is the most planted ornamental tree in American history that a growing list of states no longer let nurseries sell.
If you’re trying to figure out whether your state is one of them, whether the tree already in your yard is a problem, or what to plant instead, here’s the accurate version — not the inflated “banned in 25 states” number that circulates online, but the real, checkable list, the actual mechanism behind the storm damage, and six native trees extension offices actually recommend.
What Is a Flowering Pear Tree, and Why Did Everyone Plant One?
“Flowering pear” and “Bradford pear” both refer to ornamental cultivars of Callery pear (Pyrus calleryana), a species imported from Asia in 1909 by Boston’s Arnold Arboretum and again in 1916 by the USDA — not for its flowers, but as fire-blight-resistant rootstock for edible pear orchards [1]. The ‘Bradford’ cultivar, selected and released in the 1950s, turned out to be strikingly uniform, fast-growing, and covered in white blooms for two weeks each spring. By the 1980s it was the second most-planted tree in the United States [1]. Fire blight is a bacterial disease that can wipe out an entire pear orchard in a season, and Callery pear’s natural resistance to it is the entire reason American breeders imported the species in the first place — the ornamental version that ended up in millions of front yards was a side effect of an agricultural fix, not the original goal [7].
The sales pitch that made it ubiquitous was sterility. Because ‘Bradford’ couldn’t pollinate itself, early plantings produced no fruit and no seedlings — it looked, for decades, like a flowering tree with none of the messy downsides. That claim held until nurseries started selling other Callery pear cultivars alongside it.
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Which States Have Actually Banned Bradford Pear Sales
As of today, three states have a sale ban fully in effect: Ohio, Pennsylvania, and South Carolina. At least seven more have already passed bans that are phasing in through 2029. No state has banned homeowners from keeping a tree they already planted — every law on this list targets sale, propagation, and import, not existing yard trees.
| State | Status | Effective Date |
|---|---|---|
| Ohio | Banned — in effect | January 7, 2023 [1] |
| Pennsylvania | Banned — in effect | Phased in Feb. 2022–Feb. 2024 [3] |
| South Carolina | Banned — in effect | October 1, 2024 [2] |
| Massachusetts | Passed — phasing in | Imports banned Sept. 2024; sales end Dec. 31, 2028 [5] |
| Illinois | Passed — phasing in | January 1, 2028 [7][8] |
| Michigan | Passed — phasing in | January 1, 2028 [4] |
| Missouri | Passed — phasing in | January 1, 2029 [6] |
| New Jersey | Passed — phasing in | No fixed date; “phased in over the next few years” [24] |
You’ll see much bigger numbers repeated on lifestyle sites — “invasive in 25 states,” “banned in 17” — and the first half of that is roughly defensible; Callery pear is documented as naturalized or invasive across a wide swath of the eastern and midwestern U.S. But “banned” and “invasive” aren’t the same claim, and no state agriculture department, extension service, or statehouse record we checked supports a count anywhere near 17 actual sale bans today. Treat any number beyond the list above as aspirational, not current law, until the relevant state’s own site confirms it. Indiana is a good example of the difference: as of this writing it’s publicly discussing a ban and pointing residents toward tree trade-in programs, but no bill has actually passed — it belongs in a “watch this space” category, not on the list above [25]. New Jersey’s version is broader than most: the Invasive Species Management Act that included Callery pear covers 30 species at once, from Japanese barberry to running bamboo, signed into law rather than drafted as a single-species bill. Like every other state here, it exempts trees already planted and targets future sales only [24].
Why the “Sterile” Marketing Claim Fell Apart
‘Bradford’ really is self-incompatible — it can’t fertilize its own flowers. The problem is that nurseries didn’t stop at one cultivar. Once ‘Cleveland Select,’ ‘Aristocrat,’ and ‘Redspire’ went on sale nearby, bees started carrying pollen between genetically distinct trees that could fertilize each other [7]. Cross-pollination is also possible between an ornamental cultivar’s flowers and its own rootstock, which is typically ordinary, fruit-bearing Callery pear. Either route produces viable seed, and birds do the rest — eating the small fruit and spreading it into fence rows, pastures, and forest edges, where it grows into dense, thorny thickets [9][10].
Genetically, that spread has been unusually hard to slow down. A peer-reviewed study sampling 176 escaped Callery pear trees across Tennessee, Georgia, and South Carolina found genetic diversity matching wild populations back in Asia, plus a mutation rate the researchers called “extremely high” for a woody invasive species — evidence that this isn’t a slow-motion problem confined to a few unlucky neighborhoods, but a species with real evolutionary momentum behind its spread [12].
The Real Reason Bradford Pears Split in Half (It’s Not Just the Angle)
Almost every article on this tree repeats the same explanation for why mature Bradford pears lose limbs in storms: narrow branch angles. It’s not wrong exactly, but it’s incomplete, and a peer-reviewed branch-strength study in Arboriculture & Urban Forestry found the popular version overstates its case. Researchers pulled 26 branches from 10 mature Bradford pears to the point of failure and measured what actually predicted breakage. The aspect ratio — branch diameter compared to trunk diameter — turned out to be a better predictor of failure than attachment angle alone. A branch that’s grown nearly as thick as the trunk it’s attached to is the real risk, whether its angle is 25 degrees or 45 [11]. What angle alone misses is included bark: when two stems fuse at a tight junction, bark gets trapped inside the union instead of wood growing solidly through it, so the branch is essentially resting against the trunk rather than fused into it. A wide branch with a lot of included bark and a high aspect ratio is doing exactly what the ISA study measured — carrying more weight than a compromised union can hold.
That distinction matters if you’re trying to keep an existing tree standing rather than replace it: routine early pruning that keeps scaffold branches noticeably thinner than the trunk does more for structural safety than chasing a specific angle number. It doesn’t change the long-term outlook — Clemson’s own factsheet still puts typical Bradford pear lifespan at 15 to 25 years before major structural failure becomes likely [10] — but it’s a more accurate reason to prune, and one almost no competing article gets right.
What a Flowering Pear Doesn’t Feed
The case against Callery pear isn’t just structural. In side-by-side counts on similarly sized trees, entomologist Doug Tallamy and his students found 410 caterpillars across 19 species on one white oak, and 233 caterpillars across 15 species on a second — while two Bradford pears, checked the same way, hosted exactly one caterpillar each [16]. That gap traces back to what Tallamy calls keystone plants: research out of the University of Delaware found that just 14% of native plant species supply 90% of the caterpillar-based food chain that nesting songbirds depend on, and non-native ornamentals like Callery pear and crape myrtle barely register on that scale [15]. If you want the full breakdown of which native genera do the heavy lifting in a U.S. garden, BE’s keystone native plants guide covers it in depth — and several of the replacement trees below are on that list. None of the six alternatives below match an oak’s 500-plus caterpillar species, and it would be dishonest to imply they do — but each one has a documented host count in the double digits or a direct citation as a larval host plant, which is still an order of magnitude more ecological work than a Bradford pear’s essentially zero.
6 Native Trees to Plant Instead of a Flowering Pear
Every extension office we checked converges on a short list of look-alikes that flower at roughly the same time, without the brittle wood, the smell, or the seed dispersal problem. None of them are drop-in replacements in every respect — read the “best for” column before you buy.
| Tree | USDA Zones | Mature Size | Bloom | Best For |
|---|---|---|---|---|
| Serviceberry (Amelanchier arborea) | 4a–9b [20] | 15–25 ft [20] | White, fragrant, Mar–May [20] | The closest size/shape match; edible berries, fall color, hosts Red-spotted Purple and Viceroy caterpillars [20] |
| Eastern Redbud (Cercis canadensis) | 4a–9b [18] | 20–30 ft [18] | Pink-purple, before leaves, Mar–May [18] | Fastest color impact; hosts 12 Lepidoptera species [18] |
| American Fringetree (Chionanthus virginicus) | 3a–9b [19] | 12–30 ft [19] | Fragrant white fringe clusters, Apr–May [19] | Shadier sites; dark fruit feeds birds through late summer [19] |
| Carolina Silverbell (Halesia carolina) | 4a–8b [21] | 10–40 ft [21] | White-pink bells, late Apr–May [21] | Woodland-edge planting; hosts 7 moth/butterfly species incl. Promethea moth [21] |
| Blackhaw Viburnum (Viburnum prunifolium) | 3a–9b [22] | 12–15 ft (shrub) or to 30 ft (tree form) [22] | Fragrant white clusters, May–Jun [22] | Hedgerows and smaller lots; blue-black fruit persists into winter [22] |
| Tulip Tree (Liriodendron tulipifera) | 4a–9b [23] | 80–120+ ft [23] | Yellow-orange tulip flowers, May–Jun [23] | Large properties only — far too big for a standard yard, but an exceptional shade tree where there’s room [23] |
Serviceberry is the one to start with if you’re replacing a Bradford pear one-for-one: it blooms within a week or two of Callery pear, holds a similar rounded form, and several states will hand you one for free — more on that below.
How to Choose the Right Replacement for Your Yard
Match the tree to the site, not just the flower. On a standard suburban lot under overhead lines, serviceberry or redbud stay compact enough not to need heavy pruning against wires. On a part-shaded lot or near a patio, American fringetree’s fragrance is a genuine upgrade over a Bradford pear’s smell, and it tolerates less sun. If you’re restoring a fence line or want something that reads as a large shrub, blackhaw viburnum thickens into a dense hedge that also feeds wildlife into winter. If you specifically want to maximize caterpillar and bird activity and you have the space, redbud and silverbell both host more Lepidoptera species than a Bradford pear ever will — and if you’ve got a genuinely large property, the tulip tree is a native flowering tree at a completely different scale, not a street-tree substitute.
Your patience for waiting on a tree also matters. If you want something that looks established fast, buy the largest container size of serviceberry or redbud you can afford and reasonably transplant — both are quick, forgiving growers that settle in within a season or two. If you’re comfortable waiting longer for a smaller upfront cost, a young fringetree or silverbell planted from a 5- or 7-gallon pot will close most of that size gap within four or five years and cost noticeably less at the nursery.
Already Have a Bradford Pear? Here’s What to Actually Do
None of the bans above require you to cut down a tree you already planted — South Carolina’s own guidance is explicit that “these new regulations do not affect plants already growing in your yard” [2]. If your tree is healthy, under 15 years old, and not overhanging a structure, there’s no ecological or legal urgency to remove it immediately; the smarter move is proactive structural pruning — thinning any branch that’s grown close to trunk-diameter thick, per the aspect-ratio finding above — rather than a rushed removal.
If you do want to replace it, several states run exchange programs rather than just handing out a rulebook. Clemson Extension’s Bradford Pear Bounty lets South Carolina homeowners trade a Bradford pear for up to five free native trees, and similar programs exist through North Carolina State and other Southeastern forestry agencies [17][14]. Check your state extension office before paying retail for a replacement — the tree might already be free.
It’s also worth knowing what wild, escaped Callery pear actually looks like, since it’s not the same as the neat ornamental tree in your yard. NC State Extension describes wild offspring as irregular and sprawling, often with multiple trunks and uneven branching instead of the uniform oval shape nurseries sell, and — the giveaway most homeowners miss — thorns up to four inches long that ornamental cultivars don’t have at all [9]. If you’re seeing thickets like that along a fence line or a field edge, that’s the invasive form spreading from seed, not a cultivar someone planted on purpose.
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Is it illegal to keep a Bradford pear tree I already planted?
No. Every ban on the list above restricts sale, propagation, and import — not ownership of an existing tree [1][2].
What’s the actual difference between “Bradford pear” and “Callery pear”?
Bradford is one cultivar of the species Callery pear (Pyrus calleryana); Cleveland Select, Aristocrat, and Redspire are others. The species name is what shows up on ban lists, since any of its cultivars can cross-pollinate with each other [7].
Why do the flowers smell so bad?
The blossoms use a fly-pollination strategy rather than relying primarily on bees, which favors an odor many people compare to rotting fish over a sweeter floral scent. Multiple sources point to amine compounds as the likely cause, though we didn’t find a peer-reviewed scent analysis specific to this species to confirm the exact chemistry — treat that detail as a reasonable but unconfirmed explanation rather than settled fact.
Will more states ban it?
Given that seven states have already passed bans phasing in through 2029 on top of the three already enforced, and states like Indiana are publicly discussing one, the trend line points toward more states joining, not fewer — though which ones and when isn’t predictable [4][5][6][7][8][24][25].
The Bottom Line
Three states have actually banned flowering pear sales today; at least seven more will have by 2029. The tree splits less because of its branch angle and more because of how thick its limbs get relative to the trunk, and it does close to nothing for the caterpillars your yard’s birds depend on. None of that means you need to remove a healthy tree in a panic — but if you’re planting new, serviceberry, redbud, and the other five trees above give you the same spring show without planting next decade’s roadside thicket.
Sources
- OSU Extension BYGL — Ohio Callery pear ban timeline
- Clemson HGIC — South Carolina Bradford pear ban
- Nursery Management — Pennsylvania Callery pear ban
- Michigan State University Extension — Michigan invasive plant list expansion
- Massachusetts Introduced Pests Outreach Project — Prohibited Plant List updates
- St. Louis Public Radio — Missouri SB 105
- University of Illinois Extension — Callery pear history and invasiveness
- Shaw Local News — Illinois Bradford pear ban
- NC State Extension Publications — Callery pear identification and management
- Clemson HGIC — Bradford Pear factsheet
- Arboriculture & Urban Forestry (ISA) — Branch strength of Bradford pear, peer-reviewed
- PMC — Genetic diversity and invasion drivers of Callery pear, peer-reviewed
- Missouri Botanical Garden — Native alternatives for Bradford pear
- Penn State Extension, Beaver County Master Gardeners — Bradford pear alternatives
- UDaily, University of Delaware — Doug Tallamy’s keystone plant research
- North Carolina Native Plant Society — White oak vs. Bradford pear caterpillar study
- Clemson News — Bradford Pear Bounty exchange program
- NC State Extension Plant Toolbox — Eastern Redbud
- NC State Extension Plant Toolbox — American Fringetree
- NC State Extension Plant Toolbox — Downy Serviceberry (linked above)
- NC State Extension Plant Toolbox — Carolina Silverbell
- NC State Extension Plant Toolbox — Blackhaw Viburnum
- NC State Extension Plant Toolbox — Tulip Tree
- CBS News New York — New Jersey Invasive Species Management Act
- WBIW — Indiana’s proposed Callery pear ban
