Koelreuteria paniculata “goldenraintree”

1. Koelreuteria paniculata“goldenraintree” SIZE: Medium HABIT: Rounded

2. FOL: Purple-red in spring; bright green in summer; yellow in fall

3. BARK: Light gray-brown at maturity.

4. FL. & FR.: bright yellow; fragrant; in terminal panicles in July; fruit = papery capsule changing from green to yellow to brown

5. CULTURE: Tolerates dry, hot, windy and alkaline sites; tolerates air pollution; full sun PESTS: None serious USE: Lawns, patios, street tree MISC.: K. bipinnata is similar but less cold hardy (Zone 6-8) but more showy in fruit with red-pink capsules

6. Tilia americana“American linden” or “basswood” SIZE: Large HABIT: Pyramidal when young; rounded when mature

7. FOL: Dark green in summer; yellow-green in fall; often no fall color

8. BARK: Gray to brown, broken into long flat-topped ridges.

9. FL. & FR.: pale yellow; fragrant; in pendulous cymes in June; fruit = nutlet, not ornamental

10. CULTURE: Tolerates dry, heavy, and rocky soils; pH adaptable; full sun to partial shade PESTS: Several, however none serious in this area USE: Large areas; naturalizing MISC.: Bees make excellent honey from the nectar in the flowers

11. Tilia cordata“littleleaf linden” SIZE: Medium to large HABIT: Remains pyramidal

12. FOL: Dark, shiney green in summer; yellow-green in fall (not ornamental)

13. BARK: Gray, similar to T. americana

14. FL. & FR.: Yellowish, fragrant, pendulous cyme in July; fruit = nutlet, not ornamental

15. CULTURE: Tolerates alkaline soils, pollution tolerant, tolerates pruning PESTS: Aphids and Japanese beetles USE: EXCELLENT street tree, shade tree, planter tree, hedge MISC.: Bees like this too! Many cultivars: ‘Fairview’ and ‘Greenspire’ are the most common

16. Tilia tomentosa“silver linden” SIZE: Medium to large HABIT: Pyramidal when young; pyramidal-oval when mature

17. FOL: Lustrous dark green above and silvery-white, tomentose below

18. BARK: Light gray and smooth, can be beech like on mature trunks

19. FL. & FR.: yellow-white, fragrant, pendulous cymes in July; fruit = nutlet, not ornamental

20. CULTURE: Tolerates alkaline soils, pollution tolerant, tolerates pruning; tolerates heat and dry better than other lindens PESTS: Few; aphids USE: Excellent street tree or residential shade tree MISC.: Several cultivars; flowers are narcotic to bees

21. Celtis occidentalis“common hackberry” SIZE: Medium HABIT: Pyramidal when young; vase-shaped when mature

22. FOL: Bright green in summer; yellow in fall

23. BARK: Distinctive with narrow corky ridges

24. FL. & FR.: Not showy; fruit = dark purple drupe, 1/3”

25. CULTURE: Tolerates most soils and pH; tolerates wet or dry soils; tolerates wind; tolerates city “dirt” PESTS: Nipple galls; witches’ brooms USE: Does well in the open prairie (dry and windy); large spaces; attracts wildlife MISC.: VERY hard seed

26. Ulmus americana“American elm” SIZE: Large! HABIT: Vase shaped when mature

27. FOL: Dark green in summer; yellow in fall

28. BARK: Dark gray with deep fissures. Outer bark in cross section shows layers of whitish-buff color alternating with darker layers.

29. FL. & FR.: Not showy; fruit = 1/2” disk-shaped samara in June

30. CULTURE: Easily transplanted; fibrous roots; tolerates standing water; pH and salt tolerant USE: Majestic and graceful; street and lawn tree; use limited by disease; native MISC.: Once the most commonly used tree in towns across America.

31. PESTS: Wetwood (bacteria); cankers; leaf curl aphid; leaf spot; Dutch elm disease (Fungus = Ophiostomaulmi spread by elm bark beetle); Japanese beetles; fall cankerworms; leaf miner...

32. Ulmus parvifolia“lacebark elm” SIZE: Medium HABIT: Rounded, upright but pendulous branchlets

33. FOL: Lustrous dark green in summer; yellow-red in fall (ok)

34. BARK: Exfoliating in irregular patches, exposing lighter bark beneath

35. FL. & FR.: Not showy; fruit = 1/3” round samara in October CULTURE: Easily transplanted; pH and soil adaptable; tolerates poor soils and urban conditions PESTS: Few (relatively); resistant to Dutch elm disease USE: Lawn or street tree

36. MISC.: An excellent tree! Do not confuse with U. pumila (also called “Chinese elm”)

37. Zelkova serrata“Japanese zelkova” SIZE: Medium HABIT: Vase-shaped

38. FOL: Dark green in summer; yellow-orange-red-purple in fall

39. BARK: Reddish brown in youth. Becoming more gray-brown with age. Can exfoliate in a manner not unlike U. parvifolia

40. FL. & FR.: Not showy; fruit = a tiny drupe in fall (not showy)

41. CULTURE: Transplant easily; pH adaptable; wind and drought tolerant; pollution tolerant; susceptible to frost when young PESTS: Resistant to Dutch elm disease; elm leaf beetle and Japanese beetle; few USE: Lawns, streets, large areas. A “replacement” for U. americana MISC.: Marginally hardy here!

42. Zelkova serrata ‘Goshiki’

43. Acercampestre“hedge maple” SIZE: Medium tree HABIT: Rounded and dense; low branched

44. FOL: Dark green; bright yellow in fall

45. BARK: Dark grayish, slightly shaggy with age. Can resemble Norway maple.

46. FL. & FR.: Green in corymbs (not showy); schizocarp 3” across, 180o angle

47. CULTURE: Extremely adaptable; tolerates dry, compact, alkaline and acidic soils; tolerates air pollution; tolerates light shade; tolerates severe pruning PESTS: None serious

48. MISC.: Easily transplanted; underutilized

49. USE: Specimen, street tree (good under utility lines), pruned into hedges in Europe

50. Acer ginnala“amur maple” SIZE: Small to medium tree HABIT: Multi-stemmed shrub or small tree; variable