| Pachysandra terminalis 'Green Carpet' |
| Pachysandra terminalis 'Variegata' (AGM) |
| Paeonia delavayi (AGM) |
| Paeonia delavayi lutea |
| Paeonia delavayi ludlowii (AGM) |
| Paeonia suffruticosa |
| Paeonia suffruticosa 'Hakuojisi' |
| Paeonia suffruticosa 'Higurashi' |
| Paeonia suffruticosa 'Kinshi' |
| Paeonia suffructicosa 'Rimpo' |
| Paeonia suffruticosa 'Yachiyotsubaki' |
| Paeonia suffructicosa 'Yoshinogawa' |
| Parahebe catarractae (AGM) |
| Perovskia 'Blue Spire' (AGM) |
| Philadelphus 'Beauclerk' (AGM) |
| Philadelphus 'Belle Etoile' (AGM) |
| Philadelphus coronarius |
| Philadelphus coronarius 'Aureus' (AGM) |
| Philadelphus coronarius 'Variegatus' (AGM) |
| Philadelphus 'Dame Blanch' |
| Philadelphus 'Erectus' (AGM) |
| Philadelphus x lemoinei |
| Philadelphus 'Manteau d'Hermine' (AGM) |
| Philadelphus 'Minnesota Snowflake' |
| Philadelphus 'Silberregen' ('Silver Showers') |
| Philadelphus 'Virginal' (AGM) |
| Philadelphus 'White Rock' |
| Phlomis anatolica 'Lloyd's Variety' |
| Phlomis chrysophylla (AGM) |
| Phlomis fruticosa (AGM) |
| Phlomis italica |
| Phlomis lanata |
| Phormium 'Apricot Queen' |
| Phormium 'Bronze Baby' |
| Phormium cookianum hookeri 'Cream Delight' (AGM) |
| Phormium cookianum hookeri 'Tricolor' (AGM) |
| Phormium 'Duet' |
| Phormium 'Gold Sword' |
| Phormium 'Maori Chief' ('Rainbow Chief') |
| Phormium 'Maori Maiden' |
| Phormium 'Maori Sunrise' |
| Phormium 'Pink Panther' |
| Phormium 'Sundowner' (AGM) |
| Phormium tenax (AGM) |
| Phormium tenax 'Purpureum' (AGM) |
| Phormium 'Yellow Wave' (AGM) |
| Photinia davidiana (syn. Stransvaesia) |
| Photinia davidiana 'Palette' |
| Photinia x fraseri 'Red Robin' (AGM) |
| Phygelius aequalis 'Yellow Trumpet' (AGM) |
| Phygelius x rectus 'Devil's Tears' |
| Phygelius x rectus 'Winchester fanfare' |
| Phygelius 'Tredwidden Pink' |
| Physocarpus opulifolius 'Dart's Gold' (AGM) |
| Physocarpus opulfolius 'Diabolo' |
| Physocarpus opulifolius 'Luteus' |
| Pieris 'Flaming Silver' (AGM) |
| Pieris 'Forest Flame' (AGM) |
| Pieris japonica 'Mountain Fire' (AGM) |
| Pieris japonica 'Pink Delight' (AGM) |
| Pittosporum eugenioides 'Variegatum' |
| Pittosporum 'Garnettii' (AGM) |
| Pittosporum tenuifolium (AGM) |
| Pittosporum tenuifolium 'Abbotsbury Gold' |
| Pittosporum tenuifolium 'Irene Patterson' (AGM) |
| Pittosporum tenuifolium 'Loxhill Gold' |
| Pittosporum tenuifolium 'Silver Queen' (AGM) |
| Pittosporum tenuifolium 'Tom Thumb' (AGM) |
| Pittosporum tenuifolium 'Warnham Gold' (AGM) |
| Pittosporum tenuifolium 'Wendle Channon' |
| Pittosporum tobira (AGM) |
| Pittosporum tobira 'Nanum' |
| Potentilla fruticosa 'Abbotswood' (AGM) |
| Potentilla fruticosa 'Abbotswood Silver' |
| Potentilla fruticosa 'Daydawn' (AGM) |
| Potentilla fruticosa 'Dart's Golddigger' |
| Potentilla fruticosa 'Elizabeth' (AGM) |
| Potentilla fruticosa 'Goldfinger' (AGM) |
| Potentilla fruticosa 'Goldstar' |
| Potentilla fruticosa 'Glenroy Pinkie' |
| Potentilla fruticosa 'Katherine Dykes' (AGM) |
| Potentilla fruticosa 'Knap Hill' |
| Potentilla fruticosa 'Klondike' (AGM) |
| Potentilla fruticosa 'Limelight' |
| Potentilla fruticosa 'Marian Red Robin' |
| Potentilla fruticosa 'Princess' |
| Potentilla fruticosa 'Primrose Beauty' (AGM) |
| Potentilla fruticosa 'Pretty Polly' |
| Potentilla fruticosa 'Red Ace' |
| Potentilla fruticosa 'Sophie's Blush' |
| Potentilla fruticosa 'Sunset' |
| Potentilla fruticosa 'Tangerine' (AGM) |
| Potentilla fruticosa 'Tilford Cream' (AGM) |
| Prostanthera cuneata (AGM) |
| Prostanthera rotundifolia |
| Prunus x cistena (AGM) |
| Prunus glandulosa |
| Prunus glandulosa 'Alba Plena' (AGM |
| Prunus incisa 'Fujima' |
| Prunus incisa 'Kojo-no-mai' |
| Prunus laurocerasus |
| Prunus laurocerasus 'Etna' |
| Prunus laurocerasus 'Green Marble' |
| Prunus laurocerasus 'Mount Vernon' |
| Prunus laurocerasus 'Otto Luyken' (AGM) |
| Prunus laurocerasus 'Renault Ace' |
| Prunus laurocerasus 'Rotundifolia' |
| Prunus laurocerasus 'Zabeliana' |
| Prunus lusitanica (AGM) |
| Prunus lusitanica 'Myrtifolia' |
| Prunus lusitanica 'Variegata' |
| Prunus persica 'Purpurea' |
| Prunus triloba |
| Pyracantha coccinea 'Red Cushion' |