Polemonium 'Lace Towers'Polemonium 'Lace Towers'

Polemonium ‘Lace Towers’


This plant is no longer for sale directly from TERRA NOVA® Nurseries. However, it may still be available through one of our Licensees or Retail Sources.

Features odd-pinnate compound bright green leaves (to 27 leaflets each) that appear ladder-like. Cup-shaped, cobalt blue flowers appear in loose, terminal clusters. Flowers are fragrant.

USDA Hardiness Zone(s): 4-8
Size (HT/W/FL HT): 36″ / 24″ / 48″
Exposure: Part Shade, Full Shade
Bloom Time(s): May, June, July

SKU: POLLT Categories: ,
Common Name Jacob's Ladder
Family Polemoniaceae
Genus Polemonium
species caeruleum
Plant Type Perennial
US Patent # --
EU Grant # --
Bloom Time May, June, July
Flower Color Blue
Foliage Color Green
Dormancy Required
Exposure Part Shade, Full Shade
Growth Habit Upright, Clumping
Growth Rate Fast
Hardiness Zone 4, 5, 6, 7, 8
How Different? --
Landscape Value Mixed bed, borders or accent.
Most Active Growing Season Spring
Persistence Deciduous
Size (HT/W/FL HT) 36" / 24" / 48"
Soil (Garden) Well drained fertile soils.
Water (Garden) Average
Special Uses Fragrant, Pollinator Attractor
Comments You may find some reversion, but this is not a problem in older plants. Cut out any all green growth. Cut at 6-8" above ground after bloom for regrowth and re-blooms.
Water (Greenhouse) Dry slightly between waterings.
pH 5.6 – 6.8
Fertility Needs 150 – 200 ppm
Notes Best grown at 55 – 60°F nights and 60 – 65°F days. Provide night interruption or day-length extension to force flowering under natural short days.
Finish Time to 4″ 3 – 5 weeks
Finish Time to Gallon
Day Length for Flowering Long Day
Polemonium 'Lace Towers' - Product Profile
Polemonium 'Lace Towers' - Growing Recipe