Archive for the ‘Powdery mildew’ Category

After The Holidays Poinsettia Care

The gift of a poinsettia means you should enjoy the beauty over the next three months or more. Your poinsettia should be warmly wrapped to protect from chilling outdoor temperatures from the garden shop to your home or apartment. If applicable, carefully unwrap the protective sleeve around your poinsettia to prevent injury to leaves and […]

Hawthorn Trees In The Landscape

The world of hawthorns (Crataegus spp.) includes several outstanding landscape trees that exhibit four-season ornamental interest: 1. spring flowering, 2. disease-free summer foliage, 3. variable fall leaf color, and 4. colorful fruits for wildlife in the fall and winter months. World-wide, hawthorns are native to temperate regions of North America, Europe, Asia, and North Africa, […]

Coral honeysuckle

Coral honeysuckle (Lonicera sempervirens), aka trumpet honeysuckle, is a vigorous twining flowering vine that is primarily native to the southeastern U.S. (USDA hardiness zones 4 -8). Cultivars are available in shades of red, orange. and yellow. The colorful flowers appear in spring and summer, and colorful berries decorate in late summer and autumn. Invite hummingbirds […]

Fuzzy Bolivian Sage

The large and bright fuzzy blossoms of Bolivian Spearhead Sage (Salvia oxyphora), aka Fuzzy Bolivian Sage, should catch your eye in late summer and early autumn. Equally attractive is the plant’s lush tropical-like glossy green foliage. This sage inhabits the edges of moist forests in the foothills of the Andes. It is grown as an annual in full sun in Northern […]

Growing Shasta Daisies

Shasta daisies (Leucanthemum x superbum) is a European native that has naturalized in most areas of North America (zones 5-9). Truly low care perennials, Shasta daisies come back every spring and bloom reliably from early summer into early fall (if deadheaded). Some varieties, ‘Becky’ for example, are multi-year top performers. Shasta daisies tend to form clumps, […]

New Landscape Roses With Exceptional Fragrance

Over a century of rose breeding has rewarded gardeners with so many gorgeous garden roses: hybrid tea, grandiflora, floribunda and shrub types. Rose breeders have concentrated on plant vigor, flower color, disease resistance, and greater numbers of flowers over the growing season. Over the years, floral fragrance has been mostly ignored. In the past two […]

Beebalm (Monarda) Varieties Attract Hummingbirds, Butterflies And Moths

In 2016 Mt. Cuba Center in Greenville DE enlisted a team of trained volunteers to monitor the visitation of hummingbirds, moths, and butterflies in the 40 cultivar beebalm (Monarda) trial. Their goal was to systematically observe and note the cultivars that were most frequently visited by these pollinators. Below is a listing of the five […]

Queen Of The Prairie Or Meadowsweet

Q “Tall and pretty spectacular” very much describes Queen of the prairie (Filipendula rubra) (USDA hardiness zones 3 to 8). Twelve species comprise this genus of U.S. perennials (USDA hardiness zones 3-8). Best known species are meadowsweet (F. ulmaria).dropwort (F. vulgaris), both native to Europe, and queen-of-the-forest (F. occidentalis) and queen-of-the-prairie (F. rubra), both native […]

Garden Phlox Attract Pollinators

Phlox (Phlox spp.) are popular perennials that are also U.S. natives. A multitude of species and hybrids are available to landscapers and gardeners for almost any type of garden environment, including containers. Here is a list of the intermediate garden species: Border phlox (Phlox paniculata),  Meadow phlox (P. maculata), Carolina phlox (P. carolina), Smooth phlox […]

Peony Care in the Fall

October and November are ideal for fall herbaceous peony bed cleanup and to get ready for winter. Fall is the ideal time to dig up and divide old clumps of peony roots and to plant new plants. Old yellow and brown foliage comes off easy with hand clippers. Don’t pull or yank off the foliage! […]