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Polemonium caeruleum subsp. villosum 'Blue master' |
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| Common name |
Jacob's ladder |
| Family |
polemoniaceae |
| Life cycle |
perennial |
| Flowers |
blue |
| Size |
to 12" |
| Light |
full sun-part shade |
| Cultural notes |
ordinary garden soil, not too dry |
From seed  |
germinates at room temperature
detailed seed-starting info below
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| Seed ripens | early July |
This strong-growing Jacob's ladder has been much sturdier and more reliable in our garden than the common Jacob's ladder. It has similar delicate compound foliage, and blue flowers. For years I had this mis-identified as P. pulcherrimum, but I was recently set straight by a UK expert. The yellow anthers, and taller growth, put this squarely into the caeruleum camp. Relative to the plain species, subsp. villosum has fewer leaves along the flowering stems.
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| | Amazingly popping-green foliage in early April |
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We left this plant behind in our Pennsylvania garden (and wish it well); we don't grow it in Houston. About my plant portraits
PlantLinks to other web pages about Polemonium caeruleum subsp. villosum 'Blue master'
Visitors to this page have left the following comments| Marie Godin | Aug 02, 2009 | I love your web pages! They are clear, concise, very informative, beautifully put together. |
- Seed from '02 trade. Baggy with light. 70F (68%G, 4-12d)
- Same seed as above. Baggy with light. 70F (84%G, 6-9d)
- Seed from '05 garden. Baggy 70F with light (58+%G, 4-10d)
- Seed from '06 garden. Baggy 70F with light (50%G, 6-11d)
- Seed from '06 garden. Baggy 70F (4%G, 19d) - 70F with light (no further G).
Also seed from '07 garden. Baggy 70F (50%G, 7-12d) - 70F with light (no further G).
- Seed from '10 garden. Baggy 70F (55+%G, 3-8d)
Light may not be necessary. Seed has limited viability, apparently approximately 2 years.
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Last modified:
April 17, 2011
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