56Tallowtree, PopcorntreeTallowtree or popcorntree [Triadica sebifera (L.) Small], <strong>for</strong>merly [Sapium sebiferum (L.) Roxb.] is a deciduous treegrow<strong>in</strong>g to 60 feet (18 m) tall that can <strong>for</strong>m pure stands, especially <strong>in</strong> wet prairies. Leaves are broadly ovate to diamondshapedand turn bright yellow and scarlet <strong>in</strong> the fall. Abundant bundles of white waxy popcorn-like seeds appear onbranchlets <strong>in</strong> the fall also. Seeds, high <strong>in</strong> fat and prote<strong>in</strong>, are consumed and spread by birds and mammals. Sapl<strong>in</strong>gsas young as 3 years can produce viable seed and rema<strong>in</strong> reproductive <strong>for</strong> 100 years to produce 100,000 seeds peryear. Infestations <strong>in</strong>tensify by prolific surface root sprouts. Seed viability <strong>in</strong> the soil is 2 to 7 years.<strong>Management</strong> strategies:Do not plant. Remove prior plant<strong>in</strong>gs, and control sprouts and seedl<strong>in</strong>gs. Bag and dispose of fruit <strong>in</strong> a dumpster orburn.Tallowtree litter mulch <strong>in</strong>hibits its own seed germ<strong>in</strong>ation as well as native seeds.M<strong>in</strong>imize disturbance with<strong>in</strong> miles of where this plant occurs, and anticipate wider occupation when plants are presentbe<strong>for</strong>e disturbance.High-priority sites to monitor and treat are by water.Treat when new plants are young to prevent seed <strong>for</strong>mation.Cut, bulldoze, and mulch when fruit are not present.Manually pull new seedl<strong>in</strong>gs and tree wrench sapl<strong>in</strong>gs when soil is moist, ensur<strong>in</strong>g removal of all roots.Burn<strong>in</strong>g treatments <strong>in</strong>tensify <strong>in</strong>festations and should not be used.Recommended control procedures:Large trees. Make stem <strong>in</strong>jections us<strong>in</strong>g dilutions and cut-spac<strong>in</strong>gs specified on the herbicide label (anytime exceptMarch and April) with Arsenal AC*, Clearcast*, or Habitat* herbicide <strong>in</strong> aquatic situations; or when safety to surround<strong>in</strong>gvegetation is desired, <strong>in</strong>ject Garlon 3A or a glyphosate herbicide.For felled trees and cut sapl<strong>in</strong>gs, apply a herbicidea herbicide to stump tops and sides immediately after cutt<strong>in</strong>g us<strong>in</strong>gGarlon 4 as a 10-percent solution <strong>in</strong> a basal oil (1 quart per 3-gallon mix) when stumps are less than 6 <strong>in</strong>ches <strong>in</strong>diameter and a 20-percent solution (2 quarts per 3-gallon mix) on larger stumps, or apply Garlon 3A or a glyphosateherbicide mixed <strong>in</strong> water as a 20-percent solution (2 quarts per 3-gallon mix) on all sizes of stumps. ORTHO Brush-B-Gon, En<strong>for</strong>cer Brush Killer, and V<strong>in</strong>e-X are effective undiluted <strong>for</strong> treat<strong>in</strong>g cut-stumps and available <strong>in</strong> retail gardenstores (safe to surround<strong>in</strong>g plants). Follow the label directions.For treatment of extensive <strong>in</strong>festations <strong>in</strong> <strong>for</strong>est situations, apply Velpar L * to the soil surface with<strong>in</strong> 3 feet of the stem(one squirt per 1-<strong>in</strong>ch stem diameter) or <strong>in</strong> a grid pattern at spac<strong>in</strong>gs specified on the herbicide label, or Clearcast * asan aerial spray, which has safety to many hardwoods, at 48 ounces per acre.Sapl<strong>in</strong>gs. Apply Garlon 4 as a 15-percent solution (58 ounces per 3-gallon mix) <strong>in</strong> a labeled basal oil product, vegetableoil or m<strong>in</strong>eral oil with a penetrant, or fuel oil or diesel fuel (where permitted); undiluted Pathf<strong>in</strong>der II when safety tosurround<strong>in</strong>g vegetation is desired; or elsewhere, Stalker * as a 6- to 9-percent solution (1.5 to 2 p<strong>in</strong>ts per 3-gallon mix)<strong>in</strong> a labeled basal oil product, vegetable oil or m<strong>in</strong>eral oil with a penetrant, or fuel oil or diesel fuel (where permitted) toyoung bark as a basal spray.Seedl<strong>in</strong>gs and sapl<strong>in</strong>gs. Thoroughly wet all leaves with one of the follow<strong>in</strong>g herbicides <strong>in</strong> water with a surfactant (Julyto October): Arsenal AC* as a 0.75-percent solution (3 ounces per 3-gallon mix); Arsenal PowerL<strong>in</strong>e* as a 1.5-percentsolution (6 ounces per 3-gallon mix); Krenite S as a 20-percent solution (5 p<strong>in</strong>ts per 3-gallon mix); Clearcast* as a2-percent solution (8 ounces per 3-gallon mix); or when safety to surround<strong>in</strong>g vegetation is desired, Garlon 4 as a2-percent solution (8 ounces per 3-gallon mix).* Nontarget plants may be killed or <strong>in</strong>jured by root uptake.
57Tree-of-HeavenTree-of-heaven or ailanthus [Ailanthus altissima (Mill.) Sw<strong>in</strong>gle] is a shallow-rooted deciduous tree to 80 feet (25 m) tallwith long p<strong>in</strong>nately compound leaves hav<strong>in</strong>g two circular glands under small lobes on leaflet bases. Large term<strong>in</strong>al clustersof greenish flowers <strong>in</strong> early summer yield persistent clusters of w<strong>in</strong>g-shaped fruit with twisted tips on female trees.Light-green seeds <strong>in</strong> midsummer are capable of germ<strong>in</strong>ation. Viable seed are produced by 2- to 3-year-old plants, and amature tree can produce 300,000 seeds per year. Seed can be blown up to 330 feet (100 m) from parent. Root sproutswill appear after the ma<strong>in</strong> stem is deadened, and root segments left <strong>in</strong> soil after pull<strong>in</strong>g treatments will sprout. Sproutscan grow 10 to 14 feet (3 to 4 m) tall the first year. This vigorous growth can cont<strong>in</strong>ue <strong>for</strong> 4 or more years.<strong>Management</strong> strategies:Do not plant. Remove prior plant<strong>in</strong>gs, and control sprouts and seedl<strong>in</strong>gs. Bag and dispose of fruit <strong>in</strong> a dumpster or burn.Target female seed-produc<strong>in</strong>g plants.M<strong>in</strong>imize disturbance with<strong>in</strong> miles of where this plant occurs, and anticipate wider occupation when plants are presentbe<strong>for</strong>e disturbance.Treat when new plants are young to prevent seed <strong>for</strong>mation.Cutt<strong>in</strong>g and pull<strong>in</strong>g treatments result <strong>in</strong> abundant surface root sprouts and should not be used without herbicide treatments.Burn<strong>in</strong>g treatments are suspected of hav<strong>in</strong>g m<strong>in</strong>imal topkill effect due to scant litter.Recommended control procedures:Large trees. Make stem <strong>in</strong>jections and then apply Garlon 3A when safety to surround<strong>in</strong>g vegetation is desired, orPathway* or Arsenal AC* <strong>in</strong> dilutions and cut-spac<strong>in</strong>gs specified on the herbicide label (midsummer best, late w<strong>in</strong>tersomewhat less effective). For felled trees, apply the herbicides to stem and stump tops immediately after cutt<strong>in</strong>g. Also,ORTHO Brush-B-Gon, En<strong>for</strong>cer Brush Killer, and V<strong>in</strong>e-X are effective undiluted <strong>for</strong> treat<strong>in</strong>g cut-stumps and available <strong>in</strong>retail garden stores (safe to surround<strong>in</strong>g plants).Sapl<strong>in</strong>gs. Apply as basal sprays <strong>in</strong> mixed <strong>in</strong> a labeled basal oil product, vegetable oil or m<strong>in</strong>eral oil with a penetrant, orfuel oil or diesel fuel (where permitted) us<strong>in</strong>g Garlon 4 as a 20-percent solution (5 p<strong>in</strong>ts per 3-gallon mix) when safety tosurround<strong>in</strong>g vegetation is desired; or Stalker * as a 6- to 9-percent solution (1.5 to 2 p<strong>in</strong>ts per 3-gallon mix).Seedl<strong>in</strong>gs and sapl<strong>in</strong>gs. Thoroughly wet all leaves with one of the follow<strong>in</strong>g herbicides <strong>in</strong> water with a surfactant (Julyto October): Arsenal AC* as a 0.75-percent solution (3 ounces per 3-gallon mix); Arsenal PowerL<strong>in</strong>e* as a 1.5-percentsolution (6 ounces per 3-gallon mix); Krenite S as a 15-percent solution (58 ounces per 3-gallon mix); Escort XP* at 1ounce per acre; or when safety to surround<strong>in</strong>g vegetation is desired, Garlon 4 as a 1- to 2-percent solution (4 to 8 ouncesper 3-gallon mix) or Garlon 3A as a 2-percent solution (8 ounces per 3-gallon mix).* Nontarget plants may be killed or <strong>in</strong>jured by root uptake.