Plants

Penstemon calycocus [sold as Calico Penstemon]

[Calico Penstemon]

Penstemon ′Dark Towers′ [sold as Dark Towers Beardtongue]

Penstemon 'Dark Towers' [sold as Dark Towers Beardtongue]

[Dark Towers Beardtongue]

Penstemon digitalis [sold as Foxglove Beardtongue]

[Foxglove Beardtongue]

Penstemon hirsutus [sold as Hairy Penstemon]

[Hairy Penstemon]

Penstemon 'Prairie Twilight' [sold as Prairie Twilight Beardtongue]

[Prairie Twilight Beardtongue]

Perovskia atriplicifolia 'Little Spire'

[Little Spire Russian Sage]

Persicaria polymorpha [sold as Giant White Fleeceflower]

[Giant White Fleeceflower]

Phellodendron amurense

[Amur Corktree]

A striking tree for its interesting bark and massive framework. Widely adaptable to soil, trouble-free, and drought and pollution resistance. Easily transplanted. May be less hardy when young and rapidly growing. Fruits smell like turpentine when crushed (or stepped on). This tree is demonstrating invasive characteristics in suburban and urban fringe forests. It escapes intended plantings to invade and displace native hardwood forests. Note: only female plants have the potential to become invasive. Phellodendron amurense…

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.