Shrub Cotoneaster multiflorus [Many-flowered Cotoneaster] Salt tolerant and pH adaptable, and has best appearance when grown as multi-stemmed and branching to the ground. Mites, aphids, canker, and fireblight can be problems in stressful sites.
Tree Crataegus crus-galli var. inermis 'Cruzam' [sold as Crusader™] [Crusader Thornless Cockspur Hawthorn] This variant of Cockspure Hawthorn is a thornless type. The strong horizontal branching is good for softening vertical lines of buildings. Although attractive, some find the small, white flowers malodorous. Fireblight, leaf spot, and cedar-hawthorn rust are among the worst problems to affect this species. Japanese beetles like to feed on hawthorns.
Tree Indiana Native Crataegus viridis [Green Hawthorn] An attractive small tree with beautiful white flower corymbs and bright red persistent fruits. Very adaptable, although leaves are often badly infected by rust so that the entire plant appears to be suffering from the measles.
Tree Crataegus viridis 'Winter King' [Winter King Green Hawthorn] An attractive, nearly thornless vase-shaped small tree with beautiful white flower corymbs and large, bright red persistent fruits. This cultivar was discovered in a fence row by Bob Simpson in Vincennes, Indiana. Very adaptable, although leaves are often badly infected by rust so that the entire plant appears to be suffering from the measles.
Tree Crataegus × lavalleei [Lavalle Hawthorn] The Lavalle Hawthorn is a small, rounded tree that resulted from a cross of Crataegus mexicana and C. crusgalli. Quite resistant to rust and less thorny than its Cockspur Hawthorn parent.
Tree Crataegus × mordenensis [Morden Hawthorn] This uncommon plant resulted from a cross between Crataegus laevigata 'Paul's Scarlet' and C. succulenta'. It has attractive clusters of double flowers and is highly resistant to hawthorn rust.
Tree Crataegus × 'Vaughn' [Vaughn Hawthorn] This small tree is a hybrid of Crataegus crusgalli x C. phaenopyrum. It is generally grown for its fragrant clusters of white flowers in the spring and prolifically produced red fruits that persist into winter. Due to its numerous thorns, it is best used in areas with low traffic. Highly susceptible to rust.
Shrub Daphne × burkwoodii 'Carol Mackie' [Variegated Burkwood Daphne] Requires excellent drainage, relatively low fertility, and consistent moisture. Best in a cool site, on soil with pH near neutral, in partial shade to full sun. Notably difficult to transplant. Sometimes dies suddenly with no warning signs. 'Carol Mackie' is more vigorous than the species type.
Shrub Deutzia gracilis [Slender Deutzia] Nice in flower as they can cover the plant, hardiest of all deutzias, and relatively pest free. Once flower show is over, plants can look bedraggled. Branches often killed by cold temperatures in Northern range (or just die back), and then it's often best to cut it back to 6". Renewal pruning every few years can maintain vigor and form. Prune to maintain form by removing old stems, and do so after flowering to encourage…
Shrub Deutzia gracilis 'Nikko' [Dwarf Slender Deutzia] 'Nikko' is a compact, dense, and rounded shrub. Nice in flower as they can cover the plant, and relatively pest free. Branches often killed by cold temperatures in Northern range (or just die back), and then it's often best to cut it back to 6". Renewal pruning every few years can maintain vigor and form. Prune to maintain form by removing old stems, and do so after flowering to encourage best flower show the following…
