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Herbicide Control Treatments for Invasive Trees and Shrubs Max Williamson

Explore control options for nonnative invasive tree species like Tallowtree, Silktree, and more. Learn recommended herbicide applications for various stages of growth.

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Herbicide Control Treatments for Invasive Trees and Shrubs Max Williamson

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  1. Herbicide Control Treatments for Invasive Trees and ShrubsMax Williamson

  2. Nonnative Plants Crop,NaturalizedInvasive Ornamental,Noxious Wildlife FoodPest Plant Soil Stabilizer Control Promote

  3. Treatment OptionsFoliarBasalCut SurfaceDormant StemSoil Applied

  4. Invasive Trees • Tallowtree, Popcorntree • Triadica sebifera • (Sapium sebiferum)

  5. Invasive Trees • Tallowtree, Popcorntree • Triadica sebifera • (Sapium sebiferum) • Silktree, Mimosa • Albizia julibrissin

  6. SILKTREE, MIMOSA is a deciduous legume, growing 10 to 50 feet with feathery leaves • Recommended Control Procedures: • Large Trees • Stem injections- Arsenal AC* or Garlon 3A, anytime except March and April • Cut Stumps-apply the herbicides immediately after cutting • Saplings • Apply Garlon 4 as 20% basal spray • Resprouts and Seedlings • July to October-Garlon 3A, Garlon 4, or Glyphosate as 2 % foliar spray • July to September-Transline as 0.2 to 0.4 % foliar spray *Nontarget plants may be killed or injured by root uptake

  7. Invasive Trees • Tallowtree, Popcorntree • Triadica sebifera • (Sapium sebiferum) • Silktree, Mimosa • Albizia julibrissin • Princesstree, • Royal Paulownia • Paulownia tomentosa

  8. PRINCESS TREE, ROYAL PAULOWNIA is deciduous, growing to 60 feet with large-heart shaped leaves and pecan-like seed clusters • Recommended Control Procedures: • Large Trees • Stem injections- Arsenal AC* or Glyphosate, anytime except March and April • Cut Stumps-apply the herbicides immediately after cutting • Saplings • Apply Garlon 4 as 20% basal spray • Resprouts and Seedlings • July to October-Arsenal AC* 1 percent; Glyphosate, Garlon 3A, or Garlon 4 as 2 % foliar spray *Nontarget plants may be killed or injured by root uptake

  9. Invasive Trees • Tallowtree, Popcorntree • Triadica sebifera • (Sapium sebiferum) • Silktree, Mimosa • Albizia julibrissin • Princesstree, • Royal Paulownia • Paulownia tomentosa • Tree-of-heaven or • Ailanthus • Ailanthus altissima

  10. Invasive Trees Invasive Trees • Tallowtree, Popcorntree • Triadica sebifera • (Sapium sebiferum) • Silktree, Mimosa • Albizia julibrissin • Princesstree, • Royal Paulownia • Paulownia tomentosa • Tree-of-heaven or • Ailanthus • Ailanthus altissima • Chinaberrytree • Melia azedarach

  11. CHINABERRYTREE is deciduous, growing to 50 feet with lacy, many-divided dark green leaves • Recommended Control Procedures: • Large Trees • Stem injections- Arsenal AC*, Pathway*, Pathfinder II, or Garlon 3A anytime except March and April • Cut Stumps-apply the herbicides immediately after cutting • Saplings • Apply Garlon 4 as 20% basal spray • Resprouts and Seedlings Foliar spray Garlon 3A, or Garlon 4 as 2 % foliar spray; Arsenal AC* at 1 percent. (July to October) *Nontarget plants may be killed or injured by root uptake

  12. Invasive trees Russian Olive(Elaeagnus angustifolia)

  13. RUSSIAN OLIVE a small thorny tree to 35 feet microscopic silvery scales covered leaves • Recommended Control Procedures: • Large Trees • Stem injections- Arsenal AC* or Garlon 3A, anytime except March and April • Cut Stumps-apply the herbicides immediately after cutting • Saplings • Apply Garlon 4 as 20% basal spray • Resprouts and Seedlings • Foliar spray Arsenal AC* at 1 percent; Glyphosate, Garlon 3A, or Garlon 4 at 2 percent. (July to October) *Nontarget plants may be killed or injured by root uptake

  14. Invasive Shrubs • Chinese & European Privet • Ligustrum sinense & L. vulgare

  15. CHINESE PRIVET, EUROPEAN PRIVET is semi-evergreen, bushy shrub to 30 feet Recommended Control Procedures Foliar spray wetting all leaves with Glyphosate at 3-percent or Arsenal AC*at 1-percent. (April to December) Stems too tall for foliar spray Apply Garlon 4 as basal spray Cut stems and stumps treat with Arsenal AC* or Velpar L* at 10 percent. For safety to surrounding vegetation treat cut- surfaces with Garlon 3A or Glyphosate at 20-percent *Nontarget plants may be killed or injured by root uptake

  16. Winter Morrow Tartarian Amur Invasive Shrubs • Chinese & European Privet • Ligustrum sinense & L. vulgare • Bush Honeysuckles • Amur (Lonicera maakii) • Morrow (L. morrowii) • Tartarian (L. tartarica) • Winter (L. frangrantissima) Amur

  17. BUSH HONEYSUCKLE is deciduous, branched, multiple stemmed, with dark-green oval –to-oblong leaves • Recommended Control Procedures • Foliar spray wetting all leaves with Glyphosate at 2-percent (April to November) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray • Cut stems and stumps treat with Arsenal AC* at 10 percent, or Glyphosate at 20 percent. *Nontarget plants may be killed or injured by root uptake

  18. Invasive Shrubs • Chinese & European Privet • Ligustrum sinense & L. vulgare • Bush Honeysuckles • Lonicera spp. • Invasive Roses • Multiflora rose (Rosa multiflora) • Macartney rose (R. bracteata) • Cherokee rose (R. laevigata)

  19. NONNATIVE ROSES are deciduous except for Cherokee • Recommended Control Procedures • Foliar spray wetting all leaves with- • Escort at 0.2 dry ounces per 3-gallon (April to June) • Arsenal AC*at 1-percent or Escort at the above rate (August to October) • Glyphosate, repeated applications, at 2 percent (May to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray (Jan to Feb or May to Oct) • Cut stems and stumps treat with Arsenal AC* at 10 percent, Glyphosate at 20-percent *Nontarget plants may be killed or injured by root uptake

  20. Invasive Shrubs • Chinese & European Privet • Ligustrum sinense & L. vulgare • Bush Honeysuckles • Lonicera spp. • Invasive Roses • Rosa spp. • Autumn Olive • Elaeagnus umbellata

  21. AUTUMN OLIVE is a tardily deciduous brushy shrub, 3 to 16 feet 12 feet • Recommended Control Procedures • Foliar spray wetting all leaves with Arsenal AC* or Vanquish*at 1-percent. (April to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray ( Jan to Feb or May to Oct) • Cut stems and stumps treat with Arsenal AC* at 10 percent or Glyphosate at 20 percent *Nontarget plants may be killed or injured by root uptake

  22. Invasive Shrubs • Chinese & European Privet • Ligustrum sinense & L. vulgare • Bush Honeysuckles • Lonicera spp. • Invasive Roses • Rosa spp. • Autumn Olive • Elaeagnus umbellata • Silverthorn or Thorny Olive • Elaeagnus pungens

  23. SILVERTHORN, THORNY OLIVE is an evergreen, densely brushy shrub 3 to 25 feet • Recommended Control Procedures • Foliar spray wetting all leaves with Arsenal AC* or Vanquish*at 1-percent. (April to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray (Jan to Feb or May to Oct) • Cut stems and stumps treat with Arsenal AC* at 10 percent or Glyphosate at 20 percent *Nontarget plants may be killed or injured by root uptake

  24. Invasive Shrubs • Chinese & European Privet • Ligustrum sinense & L. vulgare • Bush Honeysuckles • Lonicera spp. • Invasive Roses • Rosa spp. • Autumn Olive • Elaeagnus umbellata • Silverthorn or Thorny Olive • Elaeagnus pungens • Japanese Privet • Ligustrum japonicum

  25. JAPANESE PRIVET is an evergreen to 35 feet, with an upward spreading canopy • Recommended Control Procedures • Foliar spray wetting all leaves with Arsenal AC* at 1 percent or Garlon 4 at 3 percent (August—September). Glyphosate at 3 percent (March to June) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray (Jan to Feb or May to October) • Cut stems and stumps treat with Arsenal AC* or Velpar L* at 10 percent For safety to surrounding vegetation treat cut- surfaces with Garlon 3A or Glyphosate at 20-percent *Nontarget plants may be killed or injured by root uptake

  26. Invasive shrubs • Winged Burning Bush • Euonymus alata

  27. WINGED BURNING BUSH is a deciduous, multiple wing-stemmed, brushy shrub to 12 feet • Recommended Control Procedures • Foliar spray wetting all leaves with Arsenal AC* or Vanquish*at 1-percent. (April to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray (Jan to Feb or May to Oct) • Cut stems and stumps treat with Arsenal AC* at 10 percent or Glyphosate at 20 percent *Nontarget plants may be killed or injured by root uptake

  28. Invasive shrubs • Sacred Bamboo, NANDINA • Nandina domestica

  29. SACRED BAMBOO or NANDINA is an evergreen multi-stemmed erect shrub reaching 8 feet • Recommended Control Procedures • Foliar spray wetting all leaves with Glyphosate at 1-percent (August to October) • Stems too tall for foliar spray • Apply Garlon 4 as basal spray • Cut stems and stumps treat with Arsenal AC* at 10 percent, or Glyphosate at 20 percent. *Nontarget plants may be killed or injured by root uptake

  30. Invasive Plant Management Programs • Prevention • Detection and Monitoring • Control and Containment • Restoration • Research • Education and Extension

  31. Integrated Vegetation ManagementMethods for Invasive Plants • Prescribed Burning • Mechanical • Manual and Motor-Manual • Biological Control • Herbicides

  32. Control a little now or Control a bunch later

  33. The End!!

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