Tree Picea sp. [Spruce] The conical or pyramidal form of Spruces makes them a valuable addition to the landscape.
Shrub Pieris japonica [Japanese Pieris] Excellent large shrub specimen with handsome, lustrous, evergreen foliage, prominently red new growth in the spring, and small, interesting, urn-shaped flowers. Leaf spots, Phytophthora induced die back, and lace bug are most problematic. Struggles in alkaline and heavy, wet soils.
Tree Pinus banksiana [Jack Pine] This pine is quite hardy and can grow on poor soil, however, given its scrubby and somewhat unkempt appearance, it is not generally recommended for ornamental use. Pyramidal when young, becoming flat-topped and spreading with maturity.
Tree Pinus bungeana [Lacebark Pine] Excellent specimen tree for bark interest, showing bark color on 1.5-2" dia. branches. Branches may break under snow. Attacked by many pine-targeting insects, with perhaps the Zimmerman Moth, the Pine Shoot Moth, and the Bud Moth being the most significant threat.
Tree Pinus cembra [Swiss Stone Pine] A fine formal specimen with age. Too slow growing to be very versatile, unless one is willing to purchase a large specimen. Susceptible to Zimmerman Moth, Pine Shoot Moth, and Bud Moth.
Tree Pinus densiflora [Japanese Red Pine] This species is outstanding for its landscape interest, making a uniquely picturesque specimen. Other species are better choices for screening.
Shrub/Tree Pinus densiflora 'Umbraculifera' [Dwarf Japanese Red Pine] This species is outstanding for its landscape interest, making a uniquely picturesque specimen. 'Umbraculifera' is an interesting dwarf cultivar, with a spreading, umbrella-like head and can be grown as a shrub or small tree. The flaky, orange-red bark of this plant is quite attractive.
Tree Pinus flexilis [Limber Pine] Large taproot makes it difficult to transplant once established. Generally low maintenance with few problems, but is susceptible to White Pine Blister Rust. Decaying needles acidify soil beneath (to about pH 4.5), which suppresses growth of other plant species.
Tree Pinus koraiensis [Korean Pine] Often confused with the Swiss Pine (Pinus cembra), the Korean Pine is a slow growing evergreen tree, native to eastern Asia. Pinus koraiensis is noted for its adaptability to many different environments and cold hardy. Its dark green needles have two white stomatal lines which gives the overall color of the needle a blue green. When young, the branching is tight and very pyramidal, which relaxes with age to a more loose pyramidal habit.
Shrub Pinus mugo [Mugo Pine] Seed-propagated plants vary widely in degree of dwarfness, and this is not always apparent in young plants. Pruning annually can help maintain dwarf habit (don't pinch or cut past candles). Can be disfigured by scale insects.
