Ligularias For Wet Garden Spots

L. stenocephala 'The Rocket' 

Ligularias (ligs) are big leafy perennials whose roots must be kept constantly moist so that leaves won’t wilt or  "faint". An established plant will tolerate several days in dry soil and the droopy foliage recovers from drought stress each night. Ligs are also called "leopard flower" and several confusing other names (USDA hardiness zones 4-9). Some are tropical plants.

Dig a hole large enough to accommodate a 3-5 gallon size container. Line the bottom of the hole with a plastic liner to retain moisture around the roots and reduce the need of irrigation over the hot summer. 

It may take upwards of 3 years to develop the full bold nature of ligs. deadheading of spent flowers will stimulate more new leaves to emerge. 

Pest control is controlling slugs and snails that may devour the leaves, creating a “shot-hole” appearance in the leaves.

Leading Temperate Varieties:

L. stenocephala ‘The Rocket’ -  tall 4-6 feet high narrow spikes of bright-yellow daisy flowers on purplish black stems and jagged-edged green leaves.

L. stenocephala 'Baby Rocket' -  compact 2 1/2 - 3 foot selection above with large, serrated, dark green leaves and a bouquet of mustard-yellow flowers on multiple chocolate stems.

L. dentata ‘Desdemona’ - rounded dark-green leaves with a purple backside. Taller stems appear in midsummer, bearing clusters of bright golden orange 3-3½ inches daisy flowers.

L. dentata 'Britt-Marie Crawford'

L. dentata ‘Orthello’ - large, rounded dark-green leaves with a purple underside; tall 3-4 feet tall floral stems bearing clusters of bright golden orange 3-3½ inches wide daisy flowers in June.

L. dentata 'Britt-Marie Crawford' -  large, glossy, purple-black leaves and bold daisy-like orange-yellow flowers.

Lovely Panicle Hydrangeas

Limelight hydrangea at NC Arboretum in Asheville

Beautiful panicle hydrangeas (Hydrangea paniculata) are among the best hydrangea choices for the summer garden (USDA hardiness zones 3 to 8). They are perfect for use in containers or in groupings or masses, shrub borders, hedges, and screens.

Limelight® hydrangea has become the standard-bearer of panicled hydrangeas with huge 6 - 8 (12) inches chartreuse (off white) flower heads in mid-summer. Limelight is a more compact selection 6 to 8 feet tall and wide over time.

Fall leaf color is usually blah in shades of yellow in fall. Flowers of some cultivars age gracefully with floral heads turning lightly pink. Panicled hydrangeas are suitable as fresh cut or dried flowers.  

Plants grow from 3 - 10 feet high depending on the variety chosen. For best flowering grow shrubs in full sun to light shade and in moist, but well-drained soil. Shrubs bloom on new wood in summer, and are pruned to desired size and shape in early spring.

For smaller landscapes, there are several smaller panicle hydrangeas to choose.

Bobo® hydrangea - fluffy, creamy spikes that turn to deep pink with red highlights on bold, red stems. Earlier blooming Bobo opens 1-2 weeks before other H. paniculata varieties start blooming. Bobo grow 3–5 feet tall, and is an ideal choice for small gardens and growing in large containers.

Little Lime® hydrangea – a dwarf version of Limelight® grows 5-6 feet tall and wide, and boasts chartreuse florets that turn creamy and then mature to rosy pink. Often all three colors coincide. Little Quick Fire panicle hydrangea, 4 to 5 feet tall and 3 feet wide, blooms early in the season with white panicles that mature to rosy red.

Little Quick Fire® - the smaller version of H. paniculata Quick Fire® @ 3-5 feet tall and to 2-4 feet wide. It blooms early (almost 4 weeks earlier than other panicle hydrangeas) in upright panicles. Each panicle (to 6” tall) contains abundant showy sterile florets which emerge white but change to pink and finally reddish-purple as the summer progresses.

Little Lamb® - downsized version of H. paniculata ‘Grandiflora’ @ 6-8 feet tall and wide. Dense, cone-shaped panicles of mostly sterile, small white flowers. Panicles stand on upright to outward-arching, stiff sturdy stems. The much smaller, fluffy, fertile flowers are partially visible beneath the showier, sterile ones.

Pinky Winky Hydrangea - unique, large bi-colored, white and pink flowers that look nice against the dark green foliage of the plant. Its unique red stems rigidly supports large 12-16 inch blooms upright on the plant. The older flowers mature to dark pink while new flowers continue to emerge white. Pinky Winky hydrangeas grow 5-6 feet tall and 6-8 feet wide.