- Nepeta subsessilis
- Nigella damascena ‘Cramers’ Plum’
- Nigella orientalis ‘Transformer’
- Ocimum 'Cardinal'
- Origanum rotundifolium ‘Light Green Oregano’
- Panicum elegans 'Frosted Explosion'
- Papaver nudicaule ‘Meadow Pastels’
- Papaver nudicaule ‘Partyfun Mix’
- Papaver nudicaule 'Pulchinella Mix'
- Papaver nudicaule ‘Red Sails’
- Patrinia scabiosifolia
- Pennisetum ‘Karley Rose’
- Penstemon 'Appleblossom'
- Penstemon 'Dark Towers'
- Penstemon ‘Sour Grapes’
- Penstemon digitalis ‘Glacier’
- Penstemon digitalis ‘Husker Red’
- Pentemon 'Sunburst Amethyst'
- Perovskia 'Longin' Year 1 Year 2
- Persicaria ‘Brush Strokes’
- Persicaria ‘Silver Dragon’
- Persicaria amplexicaule ‘Firetail’
- Phlox ‘Jeana’
- Phlox paniculata ‘Icecap’
- Phlox paniculata ‘Miss Pepper’
- Phlox paniculata ‘Miss Violet’
- Phlox paniculata ‘Purple Haze’
- Phlox paniculata ‘Red Eyes’
- Physocarpus opulifolius ‘Diabolo’
- Physostegia 'Pink Manners' Year 1 Year 2
- Physostegia ‘Summer Spires’
- Prunus mume ‘Double Red’
- Prunus mume ‘Kobai’
- Pycnanthemum muticum ‘Mountain Mint’
Cut Flower Production Trial Reports by Genus: N, O, P
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