The Well-Tended Perennial Garden The Essential Guide to Planting and Pruning Techniques, Third Edition
and should be cut down (or pulled off by hand) at this point. The new leaves that return in the late summer or autumn should be ...
related plantS Penstemon digitalis (zones 3–8), foxglove penstemon, should be deadheaded to a lateral leaf after flowering and t ...
Perovskia atriplicifolia Russian sage lamiaceae Spikes of lavender-blue flowers; fine gray leaves 3–4 ft. high; 3–4 ft. wide Ful ...
Persicaria amplexicaulis ‘Firetail’ ‘Firetail’ mountain fleeceflower polygonaceae Slim spikes of tiny crimson-red flowers; lance ...
preparation for winter. other maintenance ‘Painter’s Palette’ tolerates sun, but is happiest in part shade. Once established it ...
Phlox divaricata woodland phlox polemoniaceae Light blue, white, or lavender flowers; small green leaves 10–15 in. high; 12 in. ...
Phlox maculata early phlox polemoniaceae White, pink, or rose clusters of flowers; narrow, shiny green leaves 2–3 ft. high; 3 ft ...
Phlox paniculata garden phlox polemoniaceae Large flower clusters in white, pink, red, purple, or orange; dull green leaves 2–5 ...
Phlox stolonifera creeping phlox polemoniaceae Purple, red, blue, or white flowers; small oval leaves 6–12 in. (2 in.) high; 12– ...
Phlox subulata moss phlox polemoniaceae Pink, magenta, red, white, lavender, or blue flowers; matlike foliage 3–6 in. high; 24 i ...
Physostegia virginiana obedient plant lamiaceae Tubular pink or white flowers; narrow green leaves 2–4 ft. high; 3 ft. wide Full ...
Platycodon grandiflorus balloon flower c ampanulaceae Blue, pink, or white inflated flowers that pop open with maturity; oval gr ...
Podophyllum pleianthum Chinese May apple berberidaceae Foul-smelling deep red flowers; huge glossy umbrellalike leaves 24–30 in. ...
Polemonium caeruleum Jacob’s ladder polemoniaceae Small blue flowers on spikes; pinnately compound leaves 18–24 in. (10 in.) hig ...
Polygonatum odoratum ‘Variegatum’ variegated Solomon’s seal aSparagaceae White bell-shaped flowers; broad green and creamy white ...
pruning After the first flush of blooms winds down in mid- to late July, foliage declines and plants look unruly, so trim them h ...
Primula denticulata drumstick primrose primulaceae Spherical umbels of lavender, pink, or white flowers on 12-in. scapes; long, ...
irrigation. Areas with moderate summers produce the prettiest specimens. This species prefers a somewhat acid site and will need ...
or yellow if given too much sun or if allowed to dry out or, on the other hand, if it stays too wet. In any of these conditions, ...
until spring. If this is the route taken, early spring pruning will be necessary to clean up any damaged foliage before the earl ...
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