Plants

Papaver orientale 'Orange Scarlet' [sold as Orange Scarlet Oriental Poppy]

[Orange Scarlet Oriental Poppy]

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…

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.

Parrotia persica 'JLColumnar'

[Persian Spire™ Parrotia]

Parrotia persica 'Vanessa'

[Vanessa Persian Parrotia]

Vanessa is a cultivar that has a distinctly upright or columnar habit. 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.

Parthenium integrifolium [sold as Wild Quinine]

[Wild Quinine]

Parthenocissus quinquefolia

[Virginia Creeper]

One of the strongest-climbing vines, given solid support for attachment of the adhesive discs on tendrils (not root). Not a vine for trellises or fences. Tolerates any soil, and sun or shade. Limited value as groundcover.

Parthenocissus tricuspidata

[Boston Ivy]

One of the strongest-climbing vines, give solid support for attachment of the adhesive discs on tendrils. Not a vine for trellises or fences. Very tolerant of urban soils. Not a good groundcover.

Passiflora caerulea

[Blue Passionflower]

This is one of the hardiest passion flowers, dying back in colder climates, but hardy to 10 degrees F. (It is suspected that the specimen at Purdue University in West Lafayette, IN (USDA zone 5a), is kept alive in the winter by the heat radiated from the greenhouses and building it is planted near.) Plant is evergreen in tropical environments. Extraordinary flowers and tasty, edible fruits (passion fruit). Prefers loose sandy or gravelly soil that…

Pelargonium × hortorum ′Maverick Quicksilver′

[Maverick Quicksilver zonal geranium]