Updated for the 2021 growing season

Available Spring 2021

Armstrong Gold Maple

Acer rubrum ‘JFS-KW78’

Zone: 4

40′ x 12′

Full sun

Vigorous growing tree with dense, compact, upright habit. Less leggy than parent Armstrong. Bark is silver-gray and has medium green foliage that turns golden to orange in fall.

Pacific Sunset® Maple

Acer truncatum x A. platanoides ‘Warrenred’

Zone: 4

30′ x 25′

Full sun

Medium-sized maple with glossy green foliage and a rounded canopy. Tolerant of poor and urban growing conditions. Faster growth rate then other maples.

Eastern Redbud

Cercis canadensis

Zone: 4

20′ x 25′

Full to part sun

A wonderful small, tree whose branches are covered with light pinkish purple flowers in early spring before the leaves emerge.

Chinese Dogwood

Cornus kousa chinensis

Zone: 5

20′ x 20′

Full sun to part shade

Horizontal branching pattern with heat tolerant, dark green foliage that turn shades orange to red in the fall. Forms star-shaped, long-lasting, white bracts that emerge after tree has leaved out.

Venus Dogwood

Cornus kousa x nuttallii ‘KN 30-8’

Zone: 5

15′ x 20′

Full to part shade

A vigorous upright dogwood that blooms profuse, large, white blooms in spring.

Sunburst Honey Locust

Gleditsia triacanthos ‘Suncole’

Zone: 5

30′ x 30′

Full sun

Vigorous, urban tolerant selection with bright golden new growth that matures to rich green. Fine textured foliage with yellow fall color.

American Hop-hornbeam

Ostrya virginiana

Zone: 2

35′ x 25′

Full sun to part shade

A medium sized shade tree with a rounded crown. Hop-like blooms are unique but typically unnoticed in large trees. Also commonly called Ironwood because of it’s hard wood.

Ruby Vase Persian Ironwood

Parrotia persica ‘Ruby Vase’

Zone: 5

20′ x 15′

Full sun

Forms an upright, vase shaped habit. Foliage emerges a reddish-purple maturing to a medium green. Unique, small, reddish purple flowers in winter.

Vanessa Ironwood

Parrotia persica ‘Vanessa’

Zone: 5

28′ x 14′

Full sun

Forms a tight, dense, upright habit with fine-textured foliage. Impressive fall color, ranging from orange to red.

Available Spring 2021 (Not Expected to Reach Caliper Till Fall 2021)

Bowhall Maple

Acer rubrum ‘Bowhall’

Zone: 3

40′ x 15′

Full sun

Moderate to fast growing while keeping a much more narrow habit than other red maples. Bright yellow to orange fall color.

Pyramidal European Hornbeam

Carpinus betulus ‘Fastigiata’

Zone: 4

40′ x 30′

Full sun

An attractive, columnar tree with dense branches when young, spreading into a broad cone shape with age.

Katsura Tree

Cercidiphyllum japonicum

Zone: 4

40′ x 25′

Full to part sun

Dense rounded habit with attractive heart shaped foliage. Leaves emerge maroon then turn green. Attractive smooth silver bark. Fall leaves can have a cinnamon fragrance.

Fragrant Snowbell

Styrax obassia

Zone: 5

25′ x 25′

Full to part sun

Forms a small tree with an upright, oval habit and smooth, grey bark that will exfoliate with age. Blooms many, small, drooping, bell shaped fragrant flowers with large yellow stamens.

Click here for the list of approved street trees for Hillsboro