Rock Garden Plants
Polemonium delicatum Rydb.  
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FamilyPOLEMONIACEAE
Genus speciesPolemonium delicatum Rydb. 
BibliographyBull. Torrey Bot. Club 28: 29 (1901)
Native Rangewc. USA
Primary BiomeSubalpine
Habitatrocky slopes
Descriptionglandular, leaves 3-8cm, leaflets 5-11 pairs, thin, ovate or oblong, acute, 3-10mm, inflorescence ramose, floral peduncles thin, 5-15mm, corolla broadly campanulate, ca. 8mm
Size10-15cm
Colorblue
Bloomlate spring, summer
Ca
Typeperennial
Cultivationrock crevices with favourable water regime, eastern slopes
alpine house, poor, drained soil, shading in summer
Propagationseed in spring, barely covered, germ. 1-3 months, 18-21°C
division in spring; cuttings in spring and in late summer
SynonymsPolemonium delicatum f. coryphocola (Clem. ex Brand) Wherry
Polemonium delicatum ssp. scopulinum (Greene ex Rydb.) Wherry
Polemonium delicatum ssp. typicum Wherry
Polemonium pulcherrimum var. delicatum (Rydb.) Cronquist
Polemonium pulcherrimum ssp. delicatum (Rydb.) Brand
Polemonium scopulinum Greene ex Rydb.
Territory7 Northern America
     73 Northwestern U.S.A. (COL Colorado, WYO Wyoming)
     76 Southwestern U.S.A. (ARI Arizona, NEV Nevada, UTA Utah)
     77 South-Central U.S.A. (NWM New Mexico)
Version 10.0
(c) 1990-2025 RNDr. Pavel Slabý