Memorial Mall Tour

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This tour highlights our Scan, Link, and Learn initiative and provides a small tour of trees and shrubs centrally located near Memorial Mall. Simply download a QR Code scanning app on any mobile platform, scan each QR code that links to the Purdue Arboretum Explorer, and learn about our unique specimens on campus!

Tilia cordata [sold as Greenspire®] (Greenspire Littleleaf Linden)

Pollution tolerant and adaptable to city conditions. A great choice as a street or shade tree with its dense form and strong central leader. This genus is known for its fragrant bell-like flowers which fills the air with a sweet honey fragrance in early summer.

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Cercidiphyllum japonicum (Katsuratree)

A striking specimen tree, useful for partial shade or specimen tree. This tree forms multiple trunks unless pruned early. Does not transplant well due to its taproot and is not drought-tolerant, especially after transplanting.

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Viburnum farreri (Fragrant Viburnum)

Fragrant Viburnum commonly gets its name from the fragrant flowers that are produced mid-to-late spring. Flower buds are pinkish-red and open to white to slightly pink blooms, filling any garden with fragrance. Red fruits will eventually ripen to black by late summer to early fall, giving birds a snack as they fly by.

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Fagus sylvatica 'Purpurea' (Purple-Leaf European Beech)

The cultivar 'Purpurea' has attractive foliage that emerges deep red-purple, although it generally fades to a bronzy purple-green by the end of the summer. Unlike our native, Fagus gradifolia (American Beech), the Purple-leaf European Beech is more adaptable to hot, dry conditions, but is less hardy in this region.


Quercus palustris (Pin Oak)

This handsome tree has a distinctive branching, spreading horizontal to pendulous, from top to bottom of the tree. This effect is partly lost when lower limbs must be removed for traffic underneath. Requires an acidic soil and is subject to severe iron chlorosis on calcareous soils.

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Nyssa sylvatica (Black Gum)

One of the most beautiful of trees native to Indiana, with brilliant red fall foliage and habit comparable to Quercus palustris, but usually more irregular, and with a greater number of more slender main limbs. Silvery-gray, picturesque branching; strong horizontal accent. Difficult to transplant due to taproot; use container-grown plants when possible, or at least plants dug with a soil ball when young. Especially useful in wet soils. In the northern sections of the country, select native northern stock as the species has a wide geographic range, so hardiness can vary. Leaf spotting diseases a

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Ilex verticillata (Common Winterberry)

This Indiana native shrub has excellent show of bright red berries in winter, with fruiting color is best in full sun. Ilex verticillata, like other hollies, is dioecious, so plant females for fruit and an occasional male for pollination. Adaptable to wet soils, but tolerates more well-drained soils also. Native habitats are swampy areas and can develop chlorosis in alkaline soils.

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Quercus michauxii (Swamp Chestnut Oak)

Similar to Quercus montana (Chestnut Oak), the Swamp Chestnut Oak obtains a larger ultimate size and is found in more moist soils. Common in low areas, river bottoms, swamp borders and ravines. A deep russet red fall foliage, which can be quite stunning. This handsome tree gains its common name of "Basket Oak" from the baskets created from its wood, and the common name "Cow Oak" from the sweet, edible acorns relished by cattle.

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Juniperus horizontalis 'Wiltonii' (Blue Rug Creeping Juniper)

'Wiltonii' is a popular, extremely low-growing, and wide-spreading female juniper with strong silvery-blue foliage. This cultivar is synonymous with 'Blue Rug' and is widely adapted to various soils and climates. Tolerates slightly alkaline and heavy clay soils, but not wet soils. Young plants can be seriously injured by Phomopsis blight in some areas. Plants of all ages are susceptible to mite infestation.

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Carya × nussbaumeri (Hican)

This tree is a hybrid of the pecan and shellbark hickory, thus the common name of "Hican". It was developed to produce a nut with the taste of pecans, but with the weaker shell of the shellbark hickory. This plant has a large tap root and can be difficult to transplant. During the fall, the leaves changes to rich, golden yellow which is striking against its gray-brown bark. The Hican can be prone to various fungal leaf spots.

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