One of the most beautiful and valued spruces for landscape planting. More useful than most as a screen where space is limited because of narrow form. Needles can brown in windy exposed sites in winter. Can get aphids, budworms, and borers, though these are not usually serious problems. […]
Generally considered a better choice for the landscape than P. abies (Norway Spruce) or P. glauca (White Spruce). Best in cooler climates; does not always tolerate southern heat and humidity well. In order to prevent desiccation and needle browning, protection from harsh winter winds is advisable for plants grown in colder climates. […]
Renew by cutting to the ground in late winter. Very course in texture in the winter with its multi-layered exfoliating bark (which gives it the common name of “ninebark”). ‘Monlo’, generally sold under the name Diablo, has reddish-purple leaves that sometimes fade to green in hotter climates. […]
Read More… from Physocarpus opulifolius ‘Monlo’ [sold as Diabolo®]
Renew by cutting to the ground in late winter. Very course in texture in the winter with its multi-layered exfoliating bark (which gives it the common name of “ninebark”). ‘Seward’, generally sold under the name Summer Wine, has bronzy wine-red, more deeply cut leaves that may fade to green in hotter climates. […]
Read More… from Physocarpus opulifolius ‘Seward’ [sold as Summer Wine™]
Slight mite susceptibility in hot, dry sites. Some susceptibility to borers. May become thin, open, and have a less attractive habit at maturity. […]
‘Clanbrassiliana’ is a compact, flat-topped, mounded dwarf form. Slight mite susceptibility in hot, dry sites. Some susceptibility to borers. […]
‘Nidiformis’ is a commonly available dwarf cultivar that is flat, compact, and dense. Many times there is a depression or “nest” in the center of the plant. Slight mite susceptibility in hot, dry sites. Some susceptibility to borers. […]
The Tree Peony is a long-lived, very showy, deciduous shrub that produces numerous large, beautiful flowers beginning in mid to late spring. 'Joseph Rock' has large, semi-double blossoms with white petals that each have a dark purple flare at the base. These plants do best in a deep, fertile, and well-drained soil, with some protection […]
The Tree Peony is a long-lived, very showy, deciduous shrub that produces numerous large, beautiful flowers beginning in mid to late spring. 'Leda' has large, semi-double blossoms of mauve-pink petals marked with deep reddish-purple flares at the base. These plants do best in a deep, fertile, and well-drained soil, with some protection from strong winds. […]
One of the best trees for foliage and bark effect. Very adaptable, tolerating drought, various soils, heat, cold, etc. Prefers full sun but tolerates light shade. Sites with strong winter winds will surely cause tip dieback in Northern Indiana. […]
The Purdue Arboretum is a collaboration between the Department of Horticulture and Landscape Architecture and Physical Facilities Grounds Department