| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Paiute' | Large | Blue/Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Paleface' | Medium | Med-Green | Medial | White | Sport | - | - | Wade, Van | --NR-- |
| 'Pangaea' | Giant | Blue/Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Patagonian' | Giant | Blue/Green | - | - | Unknown | Near-White | July | Wade, Van | --NR-- |
| 'Patent Leather' | Medium | Med-Green | - | - | Unknown | Med-Lavender | July into August | Wade, Van & Elslager, Ed | .2001 |
| 'Patriotic' | Medium | Med-Green | Medial | White | Sport | Med-Lavender | July into August | Wade, Van | --NR-- |
| 'Pawnee' | Large | Med-Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Pebbles' | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Wade, Van | .2007 |
| 'Peg O' My Heart' | Large | Light-Green | - | - | Hybrid | Near-White | June into July | Wade, Van & Ward, Dr Dick & Ward, Jane | .2015 |
| 'Penny Ante' | Medium | Light-Green | - | - | Unknown | - | - | Wade, Shirley | --NR-- |
| 'Perky' | Medium | Med-Green | Medial | White | Unknown | - | July | Wade, Van | .1999 |
| 'Plain Jane' | Medium | Yellow | - | - | Hybrid | Pure-White | June into July | Benedict, Dr Ralph (Herb) & Wade, Van | .2007 |
| 'Planet Earth' | Large | Blue/Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Planet Jupiter' | Large | Med-Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Planet Mars' | Giant | Blue/Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Planet Neptune' | Giant | Blue/Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Pocohontas' | Medium | Med-Green | Marginal | Yellow | Sport | Pale-Lavender | July into August | Wade, Van | --NR-- |
| 'Potawatomi' | Large | Blue/Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Pretty Peggy' | Medium | Yellow | - | - | Hybrid | - | - | Wade, Van | .1999 |
| 'Princetta' | Large | Light-Green | Marginal | Dark Green | Unknown | Near-White | September | Balthemeau, Princetta & Wade, Van | --NR-- |
| 'Puckered Cup' | Large | Blue/Green | - | - | Unknown | Near-White | June | Wade, Van | --NR-- |
| 'Puckered Green' | Medium | Med-Green | - | - | Unknown | Pale-Lavender | June into July | Wade, Van | --NR-- |
| 'Puckered Green Cup' | Large | Dark-Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
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