Botanical

Name

English Name

1 Deciduous

2 Evergreen

3 Vine

4 Herbaceous

Perennial

Ultimate Height in feet

Color

Time of Bloom

Remarks

Polygonum Sieboldi

Tall Knot Weed

4

6

White

Aug. & Sept.

Vigorous and shrubby in growth; effective among shrubs or in the wild-garden. Leaves heart-shaped. Flowers drooping, in large clusters. A.G. F.

Polygonum sachali-nense

Sacaline

4

8

Green-white

Aug. & Sept.

The most vigorous growing of the Polygonums, and very effective among shrubs. Leaves sometimes more than a foot long, soft dull green. Flowers in clusters. A. D. F.

Polypodium vulgare

Polypody

2

Excellent for rock-gardens.

Populus alba

White Poplar

1

40

T. Irregular and very spreading in growth. Should be used with care, for when once established it spreads rapidly and is difficult to eradicate. Leaves large, heart-shaped, woolly white underneath. Good for shelter belts, and effective against a background of evergreens or other trees with dark foliage. A. D.G,

Populus alba var. Bolle-ana

Bolles' Poplar

1

30-40

T. A tall, narrow-topped tree. Leaves deeply lobed, woolly white underneath. Good for tall screens. A. D.G.

Populus balsamifera

Balsam Poplar

1

30-40

T. A rapidly growing dark-leaved tree with resinous, sweet-scented buds in spring. Good for shelter planting. A. D.G.

Populus balsamifera var. candicans

Balm of Gilead

1

30-40

T. Much like preceding, but with a broader head. A. D.G.

Populus deltoides or monolifera

Cottonwood

1

40-50

T. Spreading and rapid in growth. Leaves large, dark and glossy. Good for screens or sea-shore planting. A. D.G.

Populus deltoides var. Carolinensis

Carolina Poplar

1

40-50

T. Much like preceding. A. D.G.

Populus deltoides var. Van Geertii

Golden-leaved Poplar

1

20-30

T. A variety with bright yellow leaves in the spring. Good for color contrast. A. D.G.

Populus grandidentata

Large-toothed Aspen

1

40-50

T. Erect and open in growth; foliage silvery; good for winter bark effects. A. D.G.

Populus nigra var. ital-ica

Lombardy Poplar

1

40-50

T. Pyramidal and narrow in growth. Used extensively for screens and quick effects. It is not a long-lived tree, but when large it is very picturesque. A. D.G.

Populus tremula var. pendula

Weeping Poplar

1

10-15

T. A form of the European Poplar with slender, drooping branches, forming a parasol-shaped head. The leaves are white-green, oval, about