Van Bourgondien

Garden Guide Perennials

Varieties

Hardy Hibiscus

See Hibiscus moscheutus

Hedera helix

(English Ivy) English Ivy is a woody, evergreen climber with perennial stems. Rootlets along stems cling to any rough surface. When used as a ground-cover, the evergreen leaves form a dense carpet. Runners climb through masonry surfaces. It grows well in both alkaline and acidic soils but prefers rich, moist, organic, well-drained soil. Adaptable to different levels of light, from full sun to deep shade. It is a good idea in cold climates to protect vines from winter sun and wind. Prune at any time to control size and increase bushiness. Space at least 1-3' apart. Hardy in zones 3-9.

Helianthus

Plant in an open, sunny spot in sandy soil. This is a drought tolerant plant. Plant entire root system 1a
2" below the soil line. Pack soil tightly around the roots and water thoroughly. Limit transplanting as they do not like to be moved. Grows 7' tall. Blooms August-October. Hardy in zones 6-9.

Helictotrichon sempervirens

(Blue Oat Grass) Plant in full sun in well-drained soil. Ideal when planted in groups, spacing the plants 18-36" apart. Grows 12-18" tall, blooming in summer. Hardy in zones 4-9.

Helleborus

(Lenten Rose, Christmas Rose, etc. ) Plant in deep, rich, moist, slightly alkaline soil in full sun to partial to full shade. Space 18-24" apart. Very longlived perennial that does not like its roots disturbed. Divide in fall only when necessary. Roots are brittle and easily damaged. All parts of the plant are poisonous if ingested. Wear gloves when handling the plant; susceptible people may get dermatitis from contact with the plant. Grows 8-30" tall. Blooms Dec. -May, depending on variety. Hardy in zones 4-8.

Hemerocallis

(Daylilies) Plant in fertile, welldrained loam in full sun to light shade. Daylilies will grow in most soil types with adequate drainage. Space 24-36" apart. One of the easiest perennials to grow. Fertilize lightly in spring when plant begins to grow. Water deeply once a week in hot weather. Deadhead daily to keep the plant looking neat. Divide in spring or fall when clumps become overcrowded, usually in 3-4 years. There are hundreds of varieties of daylilies that grow in a range of colors (except blue and pure white), forms and sizes. By choosing at least several that bloom at different times, and with different colors and heights, you can have a colorful garden from late spring to fall. Grows 12a

Heuchera

(Coral Bells) Plant in well-drained soil enriched with a lot of organic matter. In areas with hot summers plant in partial shade. Space 12-18" apart. In cold climates, mulch after the ground has frozen to control heaving of the roots. Divide in spring when bloom diminishes and crown becomes woody, usually every 4-5 years. Grows 12-20" tall. Blooms May-September, depending on variety. Hardy in zones 3-10.

Hibiscus moscheutus

(Hardy Hibiscus, Rose Mallow) Plant in moist, rich soil in full sun to very light shade. Space 36" apart. Grows 36-48" tall. Blooms (with huge flowers) July-August. Hardy in zones 5-9.

Hollyhock

See Althaea rosea

Hollyhock, Miniature

See Sidalcea