Botanical Name

English Name

1 Deciduous

2 Evergreen

3 Vine

4 Herbaceous

Perennial

Ultimate Height in feet

Color

Time of Bloom

Remarks

Hibiscus moscheutos

4

5

White or rose

Aug. & Sept.

Flowers very large, tinged with purple. Particularly good near water. A. F.

Hibiscus moscheutos var. crimson eye

Crimson-eyed Hibiscus

4

4

White

Aug. & Sept.

Flowers from 5 to 7 inches across; waxy white with velvety crimson centres. Pretty near water, or in the border. Mulching in winter is desirable. C. E.

Hibiscus syriacus

Althea

1

8-10

Various

Aug. & Sept.

S. Erect and open in growth. Flowers in colors of purple, violet, red, flesh-color and white; some varieties double. One of the few hardy shrubs to bloom in August and September. Foliage dull green and unattractive. B. C. G.

Hibiscus syriacus var.

foliis variegata

1

8

Deep blue

Aug. & Sept.

S. Flowers double and showy, with leaves prettily marked with yellow. B. C. G.

Hicoria glabra

Pig Nut

1

60-90

T. A round-headed tree with finer foliage and more symmetrical habit than H. ovata. A. E.G.

Hicoria minima

Bitternut or Swamp

Hickory

1

60-90

T. Very spreading in growth. Bearing thin-shelled fruit. Excellent for moist places. A. E.G.

Hicoria ovata

Shagbark Hickory

1

50-75

T. A native narrow-headed tree, excellent for picturesque effects. Difficult to transplant.

Hieracium aurantiacum

Orange Hawkweed

4

1

Orange

June to Oct.

A pretty plant for the rock-garden or dry spots where few other plants can grow, but a bad weed if allowed to spread. Flowers in clusters somewhat resembling dandelions. A. G.

Hippophae rhamnoides

Sea Buckthorn

2

8

Yellow

May

S. Good for seashore planting. Leaves gray-white, narrow. Flowers small and in clusters. A.G.

Hollyhock

See Althaea rosea

Houstonia caerulea

Bluets

4

3 in.

Pale blue

May & June

A tufted plant bearing numerous star-shaped flowers. Good in crevices or rocks or in the wild-garden. A. F.

Humulus lupulus

Hop

3&4

15

Greenish

June

A good vine for covering arbors, walls, fences or tree trunks. Leaves rough; young flowers and hops very fragrant. A. D.G.

Hyacinthus candicans

See Galtonia