Tree Parkinsonia × [Hybrid Palo Verde] Semi-evergreen leaves, and smooth line green trunks and branches year round. Palo Verde means "green stick" in Spanish, and the green bark carries on photosynthesis. Survives in the desert on natural rainfall once established. Few problems. Needs some minor clean up maintenance of flowers and leaves. Prune when young to develop multi-stems and show off the beautiful bark. 'Desert Museum' is a V-shaped thornless hybrid having genetic characteristics indicating complex hybridization between three species, Parkinsonia…
Tree Parrotia persica [Persian Parrotia] 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.
Shrub Philadelphus coronarius [Sweet Mockorange] Well adapted to different light (even shade) and soil conditions, especially to dry situations. Relatively trouble-free, and one of the most fragrant of the mockoranges. None of the mockoranges have much landscape interest after the season of bloom. Becomes leggy if not pruned. Pruning should be done after flowering (flower buds form on previous years wood), and to maintain fullness of form.
Shrub Physocarpus opulifolius 'Monlo' [sold as Diabolo®] [Diablo Eastern Ninebark] 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.
Shrub Physocarpus opulifolius 'Seward' [sold as Summer Wine™] [Summer Wine Eastern Ninebark] 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.
Shrub Physocarpus opulifolius 'SMNPOTW' [sold as Tiny Wine®] [Tiny Wine Ninebark] Tiny Wine Ninebark is noted for its features as it is interesting season round. The exfoliating bark on mature wood reveals red-brown inner bark, this is how the common name Ninebark was chosen as the color is ever changing.
Tree Picea pungens f. glauca 'Iseli Foxtail' [Iseli Foxtail Colorado Blue Spruce] 'Iseli Foxtail' is dense, upright, and columnar to pyramidal with new branches that resemble bushy fox tails. One of the most striking of the conifers in color and habit. Some drought tolerance. Cost of most glaucous forms is high because they are produced by grafting and then intensively pruned to shape in nursery rows. Must be used with restraint because the strong blue color does not combine well with other plantings in the landscape. Some…
Shrub/Tree Picea pungens f. glauca 'Montgomery' [Montgomery Colorado Blue Spruce] 'Montgomery' is a dwarf cultivar that forms a dense, silvery-blue, broad cone to mound. Some drought tolerance. Cost of most glaucous forms is high because they are produced by grafting and then intensively pruned to shape in nursery rows. Must be used with restraint because the strong blue color does not combine well with other plantings in the landscape. Some susceptibility to Cooley Spruce Gall Adelgid (Adelges cooleyi).
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 'Vanderwolf’s Pyramid' [Vanderwolf's Pyramid Limber Pine] 'Vanderwolf's Pyramid' is a vigorous grower with a strongly upright form and is common in the nursery trade. 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.
