Archive for the ‘Heat Tolerance’ Category

Stylish Boulevard Cypress

            A twist here…a turn there, that’s the unique growth of Boulevard Cypress (Chamaecyparis pisifera ‘Boulevard’). It is a popular medium-sized evergreen shrub for home and commercial landscapes (USDA hardiness zones 5-9).  Boulevard cypress exhibits a twisted pyramidal form with soft, silvery blue foliage that also grows in a slightly twisted manner. The fine, […]

Add Alliums In Your Spring Flower Garden

              Ornamental alliums, members of the onion family (Amaryllidaceae), produce flowers that are uniquely ball shaped and stand atop long, graceful stems. Young children marvel about the lollipop or stargazing blooms. Depending on species, alliums come in many colors (white, yellow, pink, purple, blue), shapes (round, oval, cascading), and sizes (5 inches to 5 feet tall). […]

Thunderhead Japanese Black Pine For A Different Look

Thunderhead Japanese Black Pine (Pinus thunbergii ‘Thunderhead’) is compact form of Japanese black pine. At maturity it may reach 20 to 25 feet high and 15 to 20 feet wide (USDA hardiness zones 5b-8). Expect this slow-growing conifer to grow 5 feet height and 4 feet width in 10 years. By mid-winter its very long […]

Crape Myrtles With Awesome Bark

  Many cultivars of crape myrtles are hybrids that combine the large, colorful flowers of common crape myrtle (L. indica) with the mildew-resistance and cold hardiness of Japanese crapemyrtle (L. faurei). Many U.S. National Arboretum hybrid releases excel with beautiful year-round ornamental bark. Among the tree forms are ‘Natchez’ (my favorite), ‘Apalachee’, ‘Lipan’, ‘Muskogee’, and Tuscarora’. Natchez possesses extraordinary cinnamon brown winter […]

Colorful Oleanders For Hot Summer Climes

Oleander (Nerium oleander) is an attractive evergreen shrub for warm climates. Indigenous to the Mediterranean region, it is popular in warm regions of the U.S., namely in western, coastal, and southern states (USDA hardiness zones 8-11). Oleander prefers moist, well-drained soil and a sunny landscape site. Established shrubs withstand dry and windy conditions along coastal areas. Brightly colored […]

Obedient Plant For Late Summer Blooming

    Obedient plant (Physostegia virginiana) is native from the Central to Southern U.S. and northern Mexico (USDA hardiness zones 3-9). It is called “obedient plant” because each tubular flower will, upon being pushed in any one direction, stays in new position. From July to September obedient plant is valued for its late season pink or white […]

Swamp Azalea Deserves More Garden Space

              Swamp Azalea (Rhododendron viscosum, formerly R. serrulatum) is very different among deciduous azaleas. Most rhododendrons (azaleas) do not care for soppy, poorly drained soils. This U.S. native is an exception, indigenous to swamps, bogs, stream edges and wet lowlands from southern Maine to northeastern Ohio south to Florida and […]

‘Short and Sassy’ Helenium (Sneezeweed)

Sneezeweed (Helenium autumnale) is a bee/butterfly friendly perennial that blooms heavily from mid-summer into early fall. Helenium (“sneezeweed”) does not cause hayfever or irritate sinus passages. The genus Helenium is named for Helen of Troy. Its dried leaves were once crunched to make a snuff to promote sneezing. This tough prairie native thrives in full […]

Million Bells (Calibrachoa)

              Among gardeners “million bells” or “callies” are common names for calibrachoas (Calibrachoa x), spring-summer-fall flowering annuals; they’re closely relative of petunias (Petunia spp.). Low spreading plants are blanketed with small petunia-like flowers from spring until frost. Blooms hold up well to rain showers and do not need to be deadheaded. Plants are heat-tolerant and disease […]

‘Blizzard’ Pearlbush Is Superior Choice

                  Once upon a time pearlbush (Exochorda spp.) was a popular old-fashioned spring flowering shrub. Its flurry of white flowers followed forsythia in early spring bloom cycle (USDA hardiness zones 4 to 8, excel in 7 & 8). New on the garden scene is ‘Blizzard’ (E. x […]