Botanical Name: Keckiella antirrhinoides
Common Name: Yellow penstemon
Type of Plant: dicot: shrub
Character summer deciduous
 
Habit of Growth:
Overall Shape a loosely-branched shrub, with ascending primary stems and secondary branching forming an open, somewhat irregular canopy; older plants become mounded and wide-spreading
Height 4' - 6' (8')
Spread equal or more
Growth Rate slow-moderate
 
Environment:
Exposure outdoors thrives in full-sun habitats; avoid shaded locations
Soil tolerates most except poorly-drained clay
Hardiness hardy (zones 18-24): prefers warm sunny sites
 
Morphology:
Leaves pinnate, opposite, narrowly elliptical, 1/2"-1" long; bright green, with entire margins
Flowers bright lemon-yellow, trumpet-shaped, with flaring 2-lipped corolla; 1/2"-3/4" long, borne in showy panicles; April - June
Fruit a small papery capsule
 
Propagation:
seed or softwood cuttings
 
Usage:
an attractive large-sized filler, valued for its heavy flower display and drought tolerance; several planted together form a loose open screen; well-adapted to slope plantings
 
Landscape Care:
Watering prefers an occasional deep soak; can survive without summer watering but will go dormant and lose its leaves
Fertilizing little needed
Pruning head back after flowering to promote a more dense structure if desired
Pests/Diseases relatively free - susceptible to root fungus diseases in wet heavily shaded locations
Special Conditions/Other
 
Origin: chaparral of Riverside/San Bernardino counties to Baja
Family: Scrophulariaceae

Notes:
 
PDF
Your pictures go here