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"Curb" trees allowed in Hanover Township, Northampton County, Pennsylvania, USA. List picked up at the township office on March 30, 2004. This is not an official publication, see disclaimer below.

Aside: Last year (ca. 4/29/03), when I picked up a list, it included some rules. This year I got the list only — I'm not 100% sure the rules haven't changed.

Goals of this page:

  • List the trees allowed and prohibited as curb trees
  • List some of the rules that may be relevant to me as I:
    • plan on replacement of some curb trees that require too much raking (honey locust?)
    • plan on replacement of a curb tree that looks like it may be dying
  • List some of my plans and my interactions with the Shade Tree Committee

Disclaimer: I do not guarantee the accuracy of this page, nor that no changes have occurred since I transcribed this stuff here. If you have anything at stake (time, money, whatever), do not rely on the statements on this page — check them yourself at the township office.

If you think this page has value, you might suggest that the Shade Tree Committee take over "maintenance" of this page and make it "official" — I can make it somewhat write protected so that only they can edit it. On the other hand, as it is now, anyone can add notes or experiences to this page, and maybe keeping it unofficial is better.

This page is unfinished, and may forever be unfinished. I have put the most effort into resources for medium size trees as that is the list I need to choose from.

See:

Contents

General Rules

These are abstracted from a set of rules I picked up with the list of allowed trees on April 29, 2003. I did not get (nor ask for) a set of rules when I picked up the revised allowable tree list on March 29, 2004, so I don't know if any of the rules cited below have changed.

There are a bunch, mostly not recorded here, many referring to things like spacing, distance from fences / property lines, etc.

A few:

  • You need a permit to remove a live tree in public roads, planting strips, etc. (from the Hanover Township Board of Supervisors, i.e., pick one up at the township office)
  • The Board of Supervisors may require the replacement of any such removed material
  • Trees must be at least 2 1/2" in diameter (now 2 to 2 1/2"?)
  • Some additional trees are allowed for Stafore residents replacing dead or dying cherry trees (not on new list)
  • If overhead wires are present, you must choose from the species allowed with overhead wires, if overhead wires are not present, you must choose from the species allowed without overhead wires (is this still the case?)

My Situation

The honey locust trees (I think that's what they are) that I am replacing in one case (mainly because of the litter), have grown to only 35 feet in 23+ years, but there are no overhead wires. The shade tree committee reviewed my situation and will allow me to replace those trees with trees from the medium ("adjacent to overhead wires") list. My desire to do so was based on the height, but they also took into account that there are other trees in the front yard. If I had planned to take those down (which I don't) they might have required replacement trees from the tall ("no overhead wires") list.

The member of the Shade Tree Committee that I talked to pointed out that removing Honey Locust trees were a particular problem in that suckers are likely to sprout from the roots all over the yard, possibly for the next several years. One person in particular tried to control the suckers by mowing them with the lawn, resulting in short "spikes" that eventually had to be dug out.

My intent would be to regularly cut the suckers off at grade, using something like a tree pruner. Other suggestions might be to drill holes in the stump and pour in some Roundup or similar (with suitable precautions ("cork" the holes) to prevent pets from getting hurt, or painting the stumps (presumably with something like tree pruning "paint").

We also discussed my thought about planting a small tree (less than the 2 - 2 1/2" caliper required) before cutting down the old trees, and then cutting down the old trees after the new trees attain the required caliper.

He wouldn't do that, for a number of reasons, including that the new trees may grow very slowly while in the shade of the existing trees.

Depending on the cost of trees, I may plant smaller trees elsewhere in the yard, and then cut down the old trees and transplant the new trees when they reach the proper diameter.

Prohibited Trees

  • American Elm (non Dutch Elm resistant)
  • Birch — any species
  • Black Locust (is that what is on my parent's property now??)
  • Boxelder
  • 'Bradford' Callery Pear
  • Catalpa
  • Gingko — Female
  • Hickory — any species
  • Honey Locust
  • Horse Chestnut
  • Mulberry
  • Pin Oak
  • Poplar — any species
  • Sassafras
  • Silver Maple
  • Sumac
  • Sycamore / Plane Tree
  • Tree of Heaven
  • Walnut
  • Willow — any species

Trees to be Used Under Overhead Wires

Generally, these are under 30 feet tall.

  • Crabapple (disease and fireblight resistant) (Malus cultivars: Adams, Centurion, Donald Wyman, Henningi, Indian Summer, Prairie Fire, Professor Sprengei, Red Jewel, Robinson, Snowdrift, Spring Snow, Sugar Tyme, Strawberry Parfait, White Angel)
  • Crabapple, Japanese Flowering (Malus floribunda)
  • Crabapple, Redbud (Malus x zumi 'Calocarpa')
  • Hawthorn (Crataegus species:)
    • Crimson Cloud
    • Inermis (crus-galli)
    • Ohio Pioneer (punctata)
    • Superba (laevigata)
    • Winter King (viridis)
  • Hornbeam, American (Carpinus caroliniana)
  • Lilac, Japanese Tree (Syringa reticulata 'Summer Snow', 'Regent', 'Ivory Silk')
  • Maples (only the following:)
    • Trident Maple (Acer buergerianum)
    • Hedge Maple (Acer campestre)
    • Tatarian Maple (Acer tataricum)
  • Serviceberry (many cultivars) (Amelanchier x grandiflora)
  • Snowbell, Japanese (Styrax japonica)

Trees to be Used Adjacent to Overhead Wires

Generally, these trees are 30 to 45 feet tall.

With my comments on acceptability based primarily on cleanliness. I'm only basing this on what I've read, and I'm assuming that small fruits, including cherries, will not require raking. See Notes (and Resources) for Medium Size Trees.

  • OK: Amur Cork Tree — male only (Phellodendron amurense 'Macho')
  • OK: Ash, European Mountain (Sorbus aucuparia)
  • OK: Ash, Korean Mountain (Sorbus alnifolia)
  • OK: Cherry, Yoshino (Prunus yedoensis)
  • OK: Elm, Chinese (Ulmus parvifolia)
  • ??: Goldenrain Tree (Koelreuteria paniculata)
  • OK: Hornbean, European (Carpinus betulus, no columnar cultivars) (not fastiagate)
  • No: Hornbean, Hop (Ostrya virginiana)
  • No: Pear, Callery (Pyrus calleryana cultivars: Aristocrat, Capital, Chanticleer, Cleveland Select, Red Spire, Whitehouse)

Trees to be used without Overhead Wires

Presumably, these trees are taller than 45'.

  • Ash, White (Fraxinus americana, many cultivars)
  • Ash, Green (Fraxinus pennsylvanica, many cultivars, some seedless)
  • Elm, American — Dutch Elm Disease Resistant (Ulmus americana 'Delaware', 'Dynasy', 'Princeton')
  • Elm, Hybrid (Ulmus hybrids: 'Homestead', 'Pioneer')
  • Filbert, Turkish (aka Hazel) (Corylus colurna)
  • Gingko — male only (Gingko biloba "Autumn Gold', no columnar cultivars)
  • Gum, Sweet (Liquidambar styraciflua, 'Rotundifolia' is seedless)
  • Hackberry (Celtis occidentalis "Prairie Pride', 'Magnifica')
  • Hackberry, Sugar (Celtis laevigata 'All Seasons')
  • Linden (Tilia species):
    • American (americana)
    • Crimean-ungrafted (euchlora)
    • little leaf (cordata)
    • silver (tomentosa)
  • Maple, Norway (Acer plananoides 'Crimson King')
  • Maple, Sugar (Acer saccharum Green Mountain, etc., no columnar cultivars))
  • Oak (Quercus species)
    • bur (macrocarpa)
    • English (robur)
    • red (rubra)
    • sawtooth (macrocarpa)
    • shingle (imbricaria)
    • Shumard (shumardii)
    • white (alba)
    • willow (phellos)
  • Pagoda Tree or Scholar Tree, (Japanese) (Sophora japonica 'Halka', 'Princeton' or 'Regent')
  • Zelkova (Zelkova serrata 'Village Green', 'Green Vase', 'Halka')

Notes (and Resources) on Small Trees

Under 30' tall, "directly under" overhead wires.

Crabapple (disease and fireblight resistant) (Malus cultivars: Adams, Centurion, Donald Wyman, Henningi, Indian Summer, Prairie Fire, Professor Sprengei, Red Jewel, Robinson, Snowdrift, Spring Snow, Sugar Tyme, Strawberry Parfait, White Angel)

Crabapple, Japanese Flowering (Malus floribunda)

Crabapple, Redbud (Malus x zumi 'Calocarpa')

Hawthorn (Crataegus species:)

    • Crimson Cloud
    • Inermis (crus-galli)
    • Ohio Pioneer (punctata)
    • Superba (laevigata)
    • Winter King (viridis)

Hornbeam, American (Carpinus caroliniana)

Lilac, Japanese Tree (Syringa reticulata 'Summer Snow', 'Regent', 'Ivory Silk')

Maples (only the following:)

    • Trident Maple (Acer buergerianum)
    • Hedge Maple (Acer campestre)
    • Tatarian Maple (Acer tataricum)

Serviceberry (many cultivars) (Amelanchier x grandiflora)

Snowbell, Japanese (Styrax japonica)

Notes (and Resources) for Medium Sized Trees

30 to 45' tall, adjacent to overhead wires.

Amur Cork Tree — male only (Phellodendron amurense 'Macho')

Corktrees have a broad, rounded crown without a strong central leader. They have a rapid growth rate when young. The gray-brown bark becomes fissured and corky with age. Branching tends to be quite low. Sexes are separate. Flowers are greenish and not very conspicuous. Females produce large clusters of fleshy black fruit which remain on the tree into the winter. Leaves are pinnately compound with 513 leaflets. The medium green leaflets are 3" long and develop a good yellow fall color.

Sounds like a good choice.

Ash, European Mountain (Sorbus aucuparia)

European Mountain Ash is frequently planted for its showy clusters of white flowers in spring followed by an excellent display of fruit that develop in tight clusters 4-5" wide. Individual fruits are about 3/8" in diameter. Fruits start maturing in August and hang on through October. Mature fruit color is usually bright orange with selected cultivars ranging from pink to red. Leaves are pinnately compound. Tree form is oval broadening to round headed with age. Plant is more vigorous in growth that the native species, Sorbus americana, S. decora.

Also, susceptible to fire blight and needs watering during drought conditions (suppose you don't water it). Small fruit sounds like no problem.

Ash, Korean Mountain (Sorbus ainifolia)

Oops, should the latin name have been "Sorbus alnifolia"? I'll assume that for the moment, until I find the list of trees again. Oops, never mind — this set of meeting minutes of the Hanover Township, Northampton County, is the only listing on the Internet (at least found by Google) spelled as "ainifolia". I'm convinced it's a typo.

The link above has a nice descripition of the tree (except for height, spread, zone):

Leaf: Alternate, simple, 2-4 inches, broadly ovate, serrate margin, generally glossy dark green above, paler and may be finely pubescent below, turning showy yellow in the fall.

Flower: Monoecious, showy 2-3 inch umbrella-shaped clusters of 5-petal white flowers, appearing in May.

Fruit: Clusters of purple-red to orange-red 1/2 inch pomes, very showy, ripening in September or October, persisting into winter.

Twig: Slender, reddish-brown to gray-brown, reddish-brown scaly long-pointed buds.

Bark: Very attractive, smooth gray-brown, with white or purple markings, diamond-shaped lenticels obvious on young bark.

Form: A small or medium-sized tree with a spreading, broadly rounded crown.

The 1/2 inch pomes don't sound like a raking problem, especially as they persist into winter. (What's a pome, and will a bird eat it?)

Ahh, Webster's says: ": a fleshy fruit (as an apple or pear) consisting of an outer thickened fleshy layer and a central core with usually five seeds enclosed in a capsule"

This is also a good description.

Cherry, Yoshino (Prunus yedoensis)

IIUC, this is the the tree that blooms in Washington, D.C. and is also used for bonsai?

From the link above:

Prunus yedoensis: Yedo flowering cherry, Yoshino cherry - Produces very showy pink to white flowers followed by unremarkable black fruit. It grows to 40 ft. with 4 inch leaves, making it suitable only for large sizes. Hardy in zones 6-8.

I suspect cherries (and cherry pits) would not require raking.

Greenwood nursery has a nice description (without mentioning the cherries) and sells them.

Elm, Chinese (Ulmus parvifolia)

From the link above, this sounds promising. (The "fruit" sounds about like the seeds from sugar maples.)

(BTW, this page includes pictures and seems fairly good except that it doesn't mention the height, spread, hardiness, etc.)

Leaf: Alternate, simple, pinnately veined, elliptical, up to 2 1/2 inches long, with a serrate margin; base of leaf is conspicuously inequilateral. Leaf is shiny dark green above and nearly glabrous.

Flower: Inconspicuous, appearing in clusters August to September.

Fruit: A flattened, winged samara, nearly round but notched at the top, 1/2 inch long. Maturing in September to October.

Twig: Slender, zigzag, brown in color, with obvious orange lenticels. May be pubescent.

Bark: Very distinctive, even when young. Mottled green, gray and orange, puzzle pieces separated by red-orange (inner bark). May be fluted.

Form: Usually develops a rounded crown with very fine branches.

This page is also good, and mentions that the tree is susceptible to Elm and Japanese beetles but good resistance to Dutch Elm Disease.

Goldenrain Tree (Koelreuteria paniculata)

From that link: "Goldenrain Tree features clusters of showy, bright yellow flowers in summer followed by papery pods. Grows to 30 feet in height. USDA Zones 5-9."

So, how big are the papery pods?

From [[http://www.oplin.lib.oh.us/products/tree/fact pages/goldenrain_tree/goldenrain_tree.html][]]: "It also makes conspicuous fruits." (But with no size specified.)

From [[http://www.richfarmgarden.com/goldenraintree.html][]]: "Showy in the early summer, when it is covered with bright yellow 1/2inch flowers borne in pannicles up to 2 ft. long. These are followed by seed pods. Hardy to Zone 5 in the US. Shape is rounded. Does well in most soils. Full sun; plant height: 30 ft."

Here's a picture of the "pannicle" . Here's the seed pod. Here's a cluster of seed pods.

It looks like the tree, although having flowers and seed pods might not require raking, but I haven't seen anything that says that so far. Maybe we don't want to take a chance.

Hornbean, European (Carpinus betulus, no columnar cultivars allowed)

The linked page makes this sound like a good tree for my purposes: "The European Hornbeam is an oval shaped tree that grows to 40 feet tall and 15 to 20 feet wide with a plethora of relatively small but strong branches." (Oops, does the oval shape make it a columnar cultivar??) That page says the tree has no significant flowers — presumably that means little or no fruit as well, but that's not discussed on this page.

Also:

"To the landscaper this tough-wooded characteristic means that the tree will not split apart in ice or wind storms like other twiggy kinds of egg-shaped trees."

Oops, this page has some good discussion which implies that "fastigiate" is a columnar cultivar (and maybe fastigiate means columnar or similar in latin??).

But, maybe a non-fastiagate variety is suitable.

OK, from Merriam Webster:

": narrowing toward the top; especially : having upright usually clustered branches "

Hornbean, Hop (Ostrya virginiana)

from above:
25-40'/15-30'
Sun to Part Shade
Pyramidal in youth. Rounded in maturity
No serious pests. Handsome tree has performed well in city plantings. Golf courses and narrow tree lawns.

from [[http://www.snbwoodcoop.com/VirtualWoodlot/TolerantHwStand/Thtreespecies.html][]]: "Fruit: 1 1/2-2" (4-5 cm) long, 3/4-1" (2-2.5 cm) wide; conelike hanging clusters maturing in late summer; composed of many flattened, small, egg-shaped brown nutlets, each within a swollen egg-shaped flattened light brown cover that is papery and sacklike."

Conclusion: Doesn't sound as clean as I'd like.

Pear, Callery (Pyrus calleryana)

cultivars: Aristocrat, Capital, Chanticleer, Cleveland Select, Red Spire, Whitehouse

Not a clean tree, in that it produces (IIUC) a (non-edible?) pear that is larger than most edible pears.

Other resources:

  • [[http://www.rce.rutgers.edu/pubs/jerseygardener/jg-v01n02.pdf][]]

Notes (and Resources) for Large Trees

Over 45' tall, to be used without overhead wires.

[[][Ash, White]] (Fraxinus americana, many cultivars)

[[][Ash, Green]] (Fraxinus pennsylvanica, many cultivars, some seedless)

[[][Elm, American]] — Dutch Elm Disease Resistant (Ulmus americana 'Delaware', 'Dynasy', 'Princeton')

[[][Elm, Hybrid]] (Ulmus hybrids: 'Homestead', 'Pioneer')

[[][Filbert, Turkish]] (aka Hazel) (Corylus colurna)

[[][Gingko]] — male only (Gingko biloba "Autumn Gold', no columnar cultivars)

[[][Gum, Sweet]] (Liquidambar styraciflua, 'Rotundifolia' is seedless)

[[][Hackberry]] (Celtis occidentalis "Prairie Pride', 'Magnifica')

[[][Hackberry, Sugar]] (Celtis laevigata 'All Seasons')

[[][Linden]] (Tilia species):

    • American (americana)
    • Crimean-ungrafted (euchlora)
    • little leaf (cordata)
    • silver (tomentosa)

[[][Maple, Norway]] (Acer plananoides 'Crimson King')

[[][Maple, Sugar]] (Acer saccharum Green Mountain, etc., no columnar cultivars))

[[][Oak]] (Quercus species)

    • bur (macrocarpa)
    • English (robur)
    • red (rubra)
    • sawtooth (macrocarpa)
    • shingle (imbricaria)
    • Shumard (shumardii)
    • white (alba)
    • willow (phellos)

[[][Pagoda Tree or Scholar Tree]], (Japanese) (Sophora japonica 'Halka', 'Princeton' or 'Regent')

[[][Zelkova]] (Zelkova serrata 'Village Green', 'Green Vase', 'Halka')

General Web Resources for Trees

The plantsdatabase site doesn't seem all that helpful, many trees are listed as "over 40'" and no direct mention of seed pod.

This site looks pretty good (might be good for all trees).

This site has short blurbs on a variety of trees.

Resources for Particular Trees

In general, these were collected before the lists were revised. In the future, this area might be used to record links to resources on trees that are not currently on one of the approved lists. Currently, there are some trees listed below that are on one of the approved lists (primarily the large tree list).

  • Beech, European (not on current list) — typically 40 to 60' tall (up to 100'), 30 to 40' spread, seeds are 1" woody capsules containing 2 beechnuts.

  • Hackberry, Common — "It grows up to 75 feet in height and 50 feet in spread.", red berries good for wildlife

  • Katsura Tree (not on current list) — Over 40' tall, 30' suggested spacing, "When the leaves begin to fall the tree emits an odor described as caramel, burnt sugar or cotton candy."

  • [[http://plantsdatabase.com/search.php?search_text=Linden&submit=Search][Linden (Littleleaf (or [[http://plantsdatabase.com/go/58210/index.html][]], Crimean, American, Silver]] — in general, over 40' tall with 40' spread from what I've seen so far, flowers, no mention of a seed pod

  • [[][Maple, Norway (Emerald Queen or Crimson King]] —

  • [[][Maple, Sugar (Bonfire or Green Mountain)]] —

  • [[][Oak (Sawtooth, Red, Shingle, Scarlet, Black, Chestnut, White, Bur]] —

  • Pagoda or Scholar Tree — "Zones 5 to 8 : Grows to 60 ft. A medium-sized tree grown for its elegant foliage and shape as well as its 6-12-inch fragrant white flowers. Blooms in the summer. Rounded to spreading in form. Bright green leaves turn yellow in the fall. Great for casting light shade." or, from [[http://shade-trees.tripod.com/families/selections/sophora_japonica.html][]]: "Background: Like the chinquapin oak, this plant is relatively small in stature after thirty years of growth (~25-35 feet). As such it is considered a good choice for planting under powerlines. Over time, sophora can grow to become much larger. This plant has attractive white flowers in mid summer. The amber fruit is somewhat showy and attractive to birds. The tree holds its green leaves well into November in zone 5, and along with its bright yellow-green twigs provides fall and winter interest. This tree has adapted well to alkaline soils."

  • Sourgum or Blackgum — "The fruits ripen in September and October and fall from the tree soon thereafter. The fruit, an oblong drupe, is about onehalf inch long and is blueblack; the pit (seed) is indistinctly ribbed. It is edible, but if you eat one, you will quickly learn why it is called a sourgum." This site looks pretty good (might be good for all trees).

  • [[][Sweetgum]] —

  • Zelkova (Green Vase) — "Zones 6 to 8 : Grows to 80 ft. Part of the Elm family, this fine, tough tree suitable for lawns, streets and parks. Leaves are elmlike and dark green with yellow, orange, or brown colour in fall. Rounded or oval habit with many vertical branches. Bark is reddish brown when young. May grow quickly when young. Popular as a bonsai subject."

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  • () RandyKramer - 29 Apr 2003
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