Shrub Hydrangea paniculata 'Ilvobo' [sold as Bobo®] [Bobo Panicle Hydrangea] This particular cultivar of the panicle hydrangea is a small deciduous shrub ranging from 6 to 10' in height and known for its spectacular flower show, beginning in July and lasting through September. The flowers begin as a bright and clean white that slowly matures to a reddish purple. Flowers bloom on the current season's growth, so prune late winter into early spring.
Shrub Hydrangea paniculata 'Limelight' [sold as Limelight®] [Limelight Panicle Hydrangea] 'Limelight' has large, dense, upright flower panicles that emerge white, change to lime-green, then rosey pink, ultimately becoming beige at the very end. Very hardy and adaptable plant, difficult to kill.
Shrub Hydrangea paniculata 'Tardiva' [Tardiva Panicle Hydrangea] 'Tardiva' has a dense habit and flowers later, in September. Very hardy and adaptable plant, difficult to kill. Remove grown flowers late in fall as they are not attractive.
Shrub Hypericum calycinum [Creeping St. John's Wort] Relatively trouble-free. Tolerates dry conditions well (even drier shade). Generally, tops are killed back in severe winters near its limit of hardiness. Mowing to the ground each spring improves aesthetics of the following regrowth. Slow to leaf out in spring. Can be invasive via spreading stolons. Poisonous to animals.
Shrub Hypericum kalmianum 'Ames' [Ames Kalm St. John's Wort] Hypericum kalmianum 'Ames' is a compact, mounded deciduous shrub that produces attractive, interesting, bright yellow flowers in mid to late summer. 'Ames' is reported to have better winter hardiness than the straight species.
Shrub Hypericum kalmianum 'Gemo' [Gemo Kalm St. John's Wort] Hypericum kalmianum 'Gemo' is a compact, mounded deciduous shrub that produces a profusion of small, interesting, bright yellow flowers beginning late spring and continuing all the way into fall.
Shrub Hypericum kouytchense [Large-flowered St. John's Wort] The Large-flowered St. John's Wort is a mounded, semi-evergreen shrub with arching branches. Blooming generally begins in June and can last through September. The large, up to 2.5" diameter, bright yellow flowers are crowned by a dome of many long stamens. Some sources state that this species is synonymous with Hypericum 'Sungold'.
Shrub Indiana Native Hypericum prolificum [Shrubby St. John's Wort] Hypericum prolificum is a compact, rounded Indiana native shrub. The attractive bright yellow flowers, appearing in summer, are unique and crowned by a dome of many long stamens. This species can suffer in hot and humid environments, causing it to become prone to root rot and wilt.
Shrub Ilex crenata 'Hetzii' [Hetz Japanese Holly] This species, like other hollies, is dioecious and 'Hetzii' is a female cultivar that will only be able to produce fruit if there is a male pollinator planted nearby. Nice mounded broadleaf evergreen that holds its color through winter. Withstands severe pruning. Winter desiccation injury to leaves in exposed sites. Spider mites can be serious. Avoid high pH soils as chlorosis may occur.
