| 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. |
Polemonium ‘Lace Towers’
|
*** PLEASE NOTE ***
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
| Water (Greenhouse) | Dry slightly between waterings. |
| EC | — |
| 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 |
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