Tree Syringa reticulata [Japanese Tree Lilac] A very hardy and showy tree. Attractive, cherry-like mahogany-colored bark, distinctly different from all other lilacs. Widely adapted to soils and environments. Cut to ground to rejuvenate completely. Mildew resistant. Subject to infestations of borers and scale insects, but these are not usually serious enough to discourage its use where some maintenance is available. Alternate year flowering on different parts of the tree can sometimes occur, a problem that can be assuaged by deadheading (use…
Shrub Syringa vulgaris [Common Lilac] A difficult species to use in a functional way. Best for seasonal color and fragrance in the border or as an occasional specimen. Deadheading can promote flowering and prevent alternate bearing. Will get leggy without pruning (prune on a 3-year cycle). Powdery mildew is an increasingly serious problem the further south this is planted in its hardiness zone. Grows better in colder climates.
Shrub Syringa vulgaris 'Congo' [Congo Lilac] A difficult species to use in a functional way. Best for seasonal color and fragrance in the border or as an occasional specimen. Deadheading can promote flowering and prevent alternate bearing. Will get leggy without pruning (prune on a 3-year cycle). Powdery mildew is an increasingly serious problem the further south this is planted in its hardiness zone. Grows better in colder climates.
Shrub Syringa vulgaris 'Marie Legraye' [Marie Legraye Lilac] A difficult species to use in a functional way. Best for seasonal color and fragrance in the border or as an occasional specimen. Deadheading can promote flowering and prevent alternate bearing. Will get leggy without pruning (prune on a 3-year cycle). Powdery mildew is an increasingly serious problem the further south this is planted in its hardiness zone. Grows better in colder climates.
Shrub Syringa vulgaris 'May Day' [May Day Lilac] A difficult species to use in a functional way. Best for seasonal color and fragrance in the border or as an occasional specimen. Deadheading can promote flowering and prevent alternate bearing. Will get leggy without pruning (prune on a 3-year cycle). Powdery mildew is an increasingly serious problem the further south this is planted in its hardiness zone. Grows better in colder climates.
Shrub Syringa vulgaris 'Sensation' [Sensation Lilac] A difficult species to use in a functional way. Best for seasonal color and fragrance in the border or as an occasional specimen. Deadheading can promote flowering and prevent alternate bearing. Will get leggy without pruning (prune on a 3-year cycle). Powdery mildew is an increasingly serious problem the further south this is planted in its hardiness zone. Also affected by blights, leaf spots, borers, scale, and other diseases and pests. Grows better in colder…
Shrub Thuja occidentalis 'Hetz Midget' [Dwarf Eastern Arborvitae] 'Hetz Midget' is a dense, compact, globe-shaped dwarf cultivar. Bagworms can be a problem. Subject to several other insect pests, all of which usually can be controlled with timely spraying. Deer may feed on foliage. Winter color can be poor.
Shrub Thuja occidentalis 'Holmstrup' [Holmstrup Eastern Arborvitae] 'Holmstrup' is slow-growing and compact with a narrow pyramidal habit and good winter color. Bagworms can be a problem. Subject to several other insect pests, all of which usually can be controlled with timely spraying. Deer may feed on foliage.
Shrub Thuja occidentalis 'Minima' [Dwarf Eastern Arborvitae] 'Minima' is a dense, compact, globe-shaped dwarf cultivar. Bagworms can be a problem. Subject to several other insect pests, all of which usually can be controlled with timely spraying. Deer may feed on foliage. Winter color can be poor.
Tree Thuja occidentalis 'Nigra' [Nigra Eastern Arborvitae] 'Nigra' is a pyramidal to conical form with handsome deep green foliage that holds its color through winter. One of the best plants for screening in moist, well-aerated soils. Bagworms can be a problem. Subject to several other insect pests, all of which usually can be controlled with timely spraying. Deer may feed on foliage.
