Highly Rated Camellias Growing In Zone 6 Gardens

'April Tryst' camellia

You can now grow camellias in warm winter areas of the middle Atlantic States (Delaware, Maryland, Virginia) as well as the mid-South (Zones 6 and 7).  Depending on variety, camellias bloom in shades of white, pink, red, and some speckled and striped kinds. 

In northern locales where winters go down to 0 - 10 degrees F,  planting time starts from spring to early September to allow the root systems to grow deeply before cold weather arrives in December.

Sheltered the new camellias from direct sunlight and high wind. A site should have good soil drainage and has been generously amended with organic matter. Fertilize with a water soluble acidic fertilizer like Miracle-Gro or Hollytone according to package directions. Camellias grow best in partial shade — they do not like late afternoon summer sun.

'Snow Flurry'

Do not overwater camellias. A planting site under tall trees or on the north or west side of a building is ideal. Plants grown in full sun often develop leaf scorch.

Camellias are relatively deer-resistant. Deer and other garden nuisances are not known to bother camellias.
Some favorites in my East Tennessee Garden (zone 6-b) are:

‘April Dawn’ grows to about 10 feet tall and 6 feet wide with pale pink petals with dark pink streaks!

‘Artic Rose’ is double red floral beauty. This compact variety only grows to 6 feet tall and wide.

‘Snow Flurry’ (C. oleifera)  6 – 8 feet tall with 3-1/2 inch white blooms at an early age.

‘Autumn Pink Icicle’ (C. oleifera) - 5-6 feet upright shrub; large, double, rose-pink blooms.

‘Winter’s Snowman’ - 12 feet tall and 8 feet wide shrub; semi-double white flowers in fall.

‘Pink Icicle’ – 8 - 10 feet tall shrub; large 4-1/2 inch shell pink semi-double blooms in March/April

'April Remembered' - large cream to pink shaded semi-double flowers on a fast growing plant.

'April Rose' - Rose red formal double flowers on a compact.

'April Tryst' - Red, anemone form flowers on a well formed plant with medium growth.

‘Korean Fire’ (C. japonica) - vigorous 12-15 feet tall and 6-8 feet wide, blooming in March - early May; 3-5 inch wide deep red, single blooms /contrasting golden stamens in center.

Re-Invigor Your August Garden

'Knockout Pink' rebloom in early September

When you reach the month of August, your garden is either flourishing or you're thinking "better luck next year" or on the phone to a paving company. 
Here are some quick-step maintenance suggestions:
·         Keep container plants watered – remember that other than occasional August rains, you are their only resource for moisture.
·         Fertilize all container plants and perennials in your garden.  Frequent watering may be a must unless summer rainfall has been plentiful.
·         Add a Water Soluble Fertilizer products as Miracle Gro™, Jack's™, or Espoma™ Slow Release.
·         Prune back hybrid tea and shrub roses to spur plentiful re-blooms in September and October.
·         Continue to pull weeds. Don't allow them get ahead and go to seed.
·         Deadhead (prune back) annuals and perennials so they'll look better and to stimulate new blooms. Your lawn mower, set at 5-inch cutting height, makes the work faster and simpler.
·         Prune/remove dead limbs and branches on shrubs and smaller trees.
·         Scout these late summer pests - aphids, white flies, spider mites on all landscape plants. A number of safe organic pesticides or a coarse spray of water from a garden hose may take care of most pests.
·         If summer annuals have peaked and dying off from diseases or insect pests, head to your local garden center for fall blooming mums, asters, toad lilies, anemones, et.al.
·         Plant fresh containers or a garden bed of petunias, calibrachoas, marigolds, and/or globe amaranths (Gomphrena) that should bloom non-stop to first hard frost.

Calibrachoa in container

July Blooming Japanese Pagoda Tree

Japanese Pagoda tree (Styphnolobium japonicum), formerly Sophora japonica, is medium-sized tree that grows to 50 feet high, but seeing one 75 feet is not unusual in the southeastern U.S. Pagoda tree is native to eastern Asia (USDA hardiness zones 4 –8) where it is also called “Scholar tree”.

Japanese Pagoda Tree

What really makes pagoda tree strikingly different is its flowering time in July-August, when few landscape trees are blooming. Its pea-like, creamy-white flowers are showy, wisteria-like, and fragrant. The 12-inch long flower clusters droop off the branch tips. Fall color is rated average, leaves turning yellow.

In the early days of autumn, 3 to 8 inches long green fruits, best described as string of pearls, form and persist way into winter. Birds don’t are not attracted to the berries; they turn black, shrivel, and linger through winter. By spring the tree has shed most of the twiggy fruit rachises.


Pagoda tree grows in full to partial sun (6-hours minimum) and in a moist well-drained, slightly acidic soil. Pagoda tree tolerates urban drought, air pollution, and moderate soil salinity around coastal beach areas. The tree is rarely troubled by serious disease or insect problems.


Annual growth rate ranges from 18 to 24 inches. Summer foliage is comprised of 8-10 inch long, pinnately compound leaflets numbering 7 to 17. In some years its golden fall color can be spectacular.


Some cultivars, including weeping and upright (columnar) forms, are available. ‘Regent’ is the most popular cultivar, high valued as a vigorous grower and lustrous green foliage.

Seedless (Sterile) Blooming Rose Of Sharon Shrubs

'Lavender Chiffon' althea

Rose of Sharon, aka shrub althea, (Hibiscus syriacus) is a woody hibiscus shrub that is hardy in temperate northern areas of the U.S. (USDA hardiness zones 5-9). This summer flowering shrub is exceptionally easy to grow. 

At one time,  it was a great pass-along shrub that fell out of favor. However, old fashioned varieties frequently reseeded around the garden. New cultivars strut variegated foliage, double flowers, and infertile (sterile) blooms that produce little or no seed. They are available in a wide range of flower colors including pink, purple, blue, white, and almost red. 

Blooms may be single, semi-double, and double and range in size from 2-5 inches across. They grow in average to good garden soils with moderate drainage. For maximum flowering, site plants where they receive 6 or more hours of direct sun and feed annually with a slow-release fertilizer such as Osmocote™ or Nutricote™. Blooms attract numerous bees and butterflies. Japanese beetles may damage the flowers for a few weeks in early summer, but shrubs rapidly recover.

After their first year, Rose of Sharons are highly drought tolerant. Shrubs respond well to annual pruning and to severe “rejuvenating” by pruning to a few inches above the ground.

Some gardeners opt to grow them as perennials by cutting the plant back every year or two. In late spring the “shortened” plant(s) emerge as multi-stems, grow a 2-3 feet tall, and flower.

Alternative technique: thin out emerging growth to 1, 3 or 5 main shoots to train into a small patio tree.

Utilize Rose of Sharon as a specimen shrub or small tree, as a shrub border, or set into a large container. Best of the sterile forms of Rose of Sharon (althea):

Chiffon® series feature anemone-like double blooms for low seed set and long-blooming; color choices: Lavender (purple), Blue, and White; 8-12 feet x 6-10 feet wide.

Sugar Tip® - pure pink double blooms (no seed) and variegated semi-double creamy-white blooms/ bluish-green foliage; 8-12 feet x 6-8 feet.

Purple Pillar® - slender columnar growth habit (16 feet tall x 3 feet wide), 4-inch vibrant purple single to semi-double flowers with red centers; ideal fit for small urban gardens.

Rodgersia - Bold Look In A Shady Garden

Rodgersia

Rodgersia (two forms) is an outstanding summer flowering perennial grown for its broad foliage and showy flowers. Rodgersia has one key requirement: consistent soil moisture through the spring and summer months. Don’t attempt to grow this bold perennial unless its water needs is totally satisfied. Plants prefer wet, boggy feet (roots).

Rodgersias (Rodgersia pinnata) sport bold pinnately compound leaves that emerge with a dark bronze tint. Leaves measure more than a foot wide and 3-4 foot high perennial. In early summer, white bloom panicles rise 2 to 3 feet above the foliage and bloom over 3 to 4 weeks. 

A secondary species, Chestnut-leaved Rodgersia (R. aesculifolia), is another clump form with bold green foliage and bears creamy-white flowers in mid-summer (USDA hardiness zones 5 to 8).

Varieties of rodgersia: 'Chocolate Wing' -- cherry blossom pink and cream blooms); ‘Alba’- white flowers and dark green leaves/bronze veining.

Rodgersia prosper in partial day sun tor light shade all day. Site them nearby water features like within the splash-zone of a waterfall. They grow exceptionally well along woodland creeks.

When properly sited, the foliage remains blemish-free all season long. Disease and pest problems are rare if growing conditions are ideal. Deer and rabbits rarely trouble them

.

Planting in containers: plant a single crown into a 3 to 5 gallon size container filled with humus-rich potting soil. To restrict most water loss, line the bottom of the container with plastic shopping bags. This reduces irrigation needs that saves on your monthly water bill.

Big Bold Perennial Queen of The Prairie

Tall and pretty spectacular pretty much describes Queen of the prairie (Filipendula rubra) (USDA hardiness zones 3 to 8). The species is native from Pennsylvania to Georgia west and north to Iowa and Missouri. This long-lived beauty will dominate its garden spot for many years. Unlike most Filipendula spp. which bear white flowers, F. rubra flaunts wonderful pink flowers.

Queen of the prairie is valued for both its bold foliage and flowers. This clump-forming perennial grows 6-8 feet tall. Many 6-9 inch wide panicles (corymbs) tiny, fragrant, pale pink flowers fill the tops in early to mid summer. Bright green, deeply cut, pinnately compound leaves comprise 7-9 lance-shaped large leaflets, each leaflet 7-9 lobed. Leaves are fragrant.


In Zones 3 to 7, filipendulas grow naturally in mostly full sun sites. In the South (Zones 7b - 8), plants are best lightly shaded from mid-afternoon sun. Plant in moist acidic soils, but they also will prosper on poorly drained, calcareous sites. More soil moisture means taller plants.


Few serious disease or insect problems trouble filipendulas when plants are not crowded and roots are kept relatively moist. Leaf spots, powdery mildew, rust are occasional problems. Though quite tall, this sturdy stemmed perennial usually does not ask for staking unless grown in moderate shade.


Filipendulas are tall plants for large gardens. Plant three or more for an early summer spectacular floral show.


Landscape use: borders (rear), cottage gardens, rain gardens, wet meadows or in moist ground along streams or ponds.

Angel Trumpets

Mottled leaf / White Flowered Variety

Angel trumpet (Brugmansia) is tropical plant native from Venezuela to Peru (USDA hardiness zones 7-b to 10). Plants have shown to be surprising hardy outdoors in zone 6-b in protected sites. 

This beautiful shrub, often trained as a tree, may reach heights of 6-10 feet before cold weather arrives in the fall. It is a member of the Solanaceae family which includes tomato, potato, petunia, nicotiana and other great garden plants. 

Angel trumpets are highly prized for their enormous fragrant trumpet-shaped flowers, some 10 inches or more in length. The exotic flowers emit a strong lemony scent over the evening hours. Blooms are pollinated by moths. Flower colors range from white, orange, yellow, and pink. Some varieties exhibit variegated foliage.

If you live in a northerly area, purchase angel trumpet in early spring and grow the new plant indoors to get it well-established. Move it outdoors after the threat of frost has passed. Plant angel trumpet in a large 12-16 inch (or wider) container in well-drained potting soil (media). If you live in a mild temperate climate, plant directly into a garden bed in a well-drained soil and keep well mulched. You may want to place the heavy container on a dolly to move it around to different locations of the garden.

This fast growing plant demands lots of water, but it fails when over-watered. Keep soil moist and let soil dry out between waterings. Fertilize monthly with a water-soluble fertilizer such as Miracle-Gro®, Peters®, and Schultz®. In the summer, when plant growth is more rapid and most blooms form, feed every two weeks according to package directions. Cut back on fertilizing in fall and do not feed over winter.

In northerly areas, bring angel trumpet(s) inside as outdoor temperatures drop below 40°F. If you garden where winters are mild, protect by setting poles around it and wrap with milky white plastic. You may opt to cut back entire plant to the ground and mulch heavily to protect the crown during winter.

Occasionally snip off old spent flowers, and spur new growth. A container plant can be cut to the ground for winter. Beware: sap from this plant is highly poisonous when ingested by humans, pets, or livestock.

For a large selection of angel trumpet hybrids, shop on-line at Plant Delights Nursery in Raleigh, NC.

Pink variety