'Penn Lawn' Red Fescue 'Pennant' Dwarf Delphinium
'Pennlinks' Bent Grass Pennsylvania Maple
Pennsylvania Smartweed Penny Flower (spp.)
Penny Flower 'Honesty' 'Penny Primrose' Horned Violet
Pennywort, Lawn Marsh 'Crystal Confetti' Pennywort, Whorled Marsh
Pennywort: umbellata 'Penola' Lavender Grevillea
'Pensioner's Voice' Rose Penstemon 'Claude Barre'
Penstemon, Barret's Penstemon, Bunchleaf 'Blue Bedder'
Penstemon, Bunchleaf 'Electric Blue' Penstemon, Bunchleaf 'Margarita BOP'
Penstemon, Bunchleaf 'Platina White' Penstemon, Dwarf Blue
Penstemon, Eaton's Penstemon, Firecracker
Penstemon, Foothill 'Blue Bedder' Penstemon, Foothill 'Electric Blue'
Penstemon, Foothill 'Margarita BOP' Penstemon, Foothill 'Platina White'
Penstemon, Guadalupe Mountain Penstemon, Pineleaf
Penstemon, Rocky Mountain Penstemon, Sawsepal
Penstemon, Showy Penstemon, Southern Woodland
Penstemon: isophyllus Penstemon: linarioides
Penstemon: mexicalihybrid 'Pike's Peak Purple' Penstemon: mexicalihybrid 'Red Rocks'
Penstemon: spp. Penstemon: whippleanus
Pentas (spp.) Pentas 'Buderin Blue'
Pentas 'Longwood Pink' Pentas 'New LookŪ Pink'
Pentas 'New LookŪ Rosa' Pentas 'Ruby Glow'
Pentas 'Stars & Stripes' Pentas Variegated
Peony Peony, Common
Peony, Common Garden (spp.) Peony, Common Garden 'Chocolate Soldier'
Peony, Common Garden 'Cytherea' Peony, Common Garden 'John Harwood'
Peony, Common Garden 'Laura Magnos' Peony, Common Garden 'Le Jour'
Peony, Common Garden 'Mrs. Frank Beach' Peony, Common Garden 'Paula Fay'
Peony, Common Garden 'Rose Wonder' Peony, Fernleaf 'Rubra Flora Plena'
Peony, Hybrid 'Pink' Peony, Hybrid 'Single Red'
Peony, Hybrid 'White' Peony, Japanese Tree (spp.)
Peony, Japanese Tree 'Amber Moon' Peony, Japanese Tree 'Hanakisoi'
Peony, Japanese Tree 'Hephestos' Peony, Japanese Tree 'Hoki'
Peony, Japanese Tree 'Kinshi' Peony, Japanese Tree 'Roman Gold'
Peony, Japanese Tree 'Sahohime' Peony, Japanese Tree 'Spring Carnival'
Peony, Japanese Tree 'Thunderbolt' Peony, Japanese Tree 'Yagumo'
Peony, Majorcan Peony, Moutan (spp.)
Peony, Moutan 'Amber Moon' Peony, Moutan 'Hanakisoi'
Peony, Moutan 'Hephestos' Peony, Moutan 'Hoki'
Peony, Moutan 'Kinshi' Peony, Moutan 'Roman Gold'
Peony, Moutan 'Sahohime' Peony, Moutan 'Spring Carnival'
Peony, Moutan 'Thunderbolt' Peony, Moutan 'Yagumo'
Peony, Tree (spp.) Peony, Tree 'Amber Moon'
Peony, Tree 'Hanakisoi' Peony, Tree 'Hephestos'
Peony, Tree 'Hoki' Peony, Tree 'Kinshi'
Peony, Tree 'Roman Gold' Peony, Tree 'Sahohime'
Peony, Tree 'Spring Carnival' Peony, Tree 'Thunderbolt'
Peony, Tree 'Yagumo' Peony: officinalis
Peony: peregrina Peony: smouthiihybrid