- Position: full sun or partial shade
- Soil: fertile, moist, well-drained soil
- Rate of growth: average
- Flowering period: June
- Hardiness: fully hardy
Jacob's Ladder gets its name from the arrangement of its leaves – pairs of opposite leaflets resembling a ladder. In early summer, erect stems rise up from the bright green foliage carrying clusters of bell-shaped, lavender-blue flowers. A cottage-garden favourite, Jacob's Ladder is happiest in partial shade, and looks equally at home in a wildlife garden setting or in grass. Although it is short-lived, it self seeds freely.
- Garden care: Cut the plant back after flowering to encourage a second flush of flowers. In autumn cut the faded flowerheads down to the ground and compost the dead stems.
Reviewed by 1 customer
Displaying review 1
- Bee Magnet
- Insect Magnet
- Needed Watering Often
Comments about Crocus Polemonium caeruleum:
Lovely plant with spires of sweet scented cheerful bold blue flowers with contrasting bright yellow stamen. The bees and hoverflies (etc) love it too which is great.
Seemed to need quite a bit of watering but this is the only issue i have
- Your Gardening Experience:
Do you want to ask a question about this?If so, click on the button and fill in the box below. We will post the question on the website, together with your alias (bunnykins, digger1, plantdotty etc etc) and where you are from (Sunningdale/Glasgow etc). We'll also post the answer to your question!
Q:How far should I cut this back if I want to try and get a second flush of flowers?Asked on 10/7/2016 by Amanda from United Kingdom
If you cut the top back to lush basal growth after all the flowers have faded, then you may get a second flush in late summer.Answered on 20/7/2016 by Helen from crocus
Q:What can I plant in my planting bed?
I have lost a plant in the middle of a border and am left with an unsightly hole which I would like to fill with some colour again. It is a narrow border so I don't want anything too large - probably no bigger than 50x50 cm. It is a mixed shrub/perennial border of pink, blue and white, which gets lots of sun and tends to be fairly dry - the soil is clay. The surrounding plants are perennial cornflower, hardy geraniums and osteospermum. Can you recommend something which will quickly fill the gap?Asked on 21/6/2006 by Annabelle Coombs
A:There are some lovely plants that would be suitable for the spot you described. Just click on the link below each plant name to find out more about that particular one. Agastache Blue Fortune http://www.crocus.co.uk/findplant/selectionresults/?ContentType=Plant_Card&ClassID=208&CategoryID= Dicentra spectabilis http://www.crocus.co.uk/plants/_/geranium-macrorrhizum-white-ness/classid.2000015973/ http://www.crocus.co.uk/findplant/selectionresults/?ContentType=Plant_Card&ClassID=2839&CategoryID= Geranium maculatum Elizabeth Ann http://www.crocus.co.uk/findplant/selectionresults/?ContentType=Plant_Card&ClassID=2000005206&CategoryID= Polemonium caeruleum http://www.crocus.co.uk/findplant/selectionresults/?ContentType=Plant_Card&ClassID=3456&CategoryID= Sanguisorba albiflora http://www.crocus.co.uk/findplant/selectionresults/?ContentType=Plant_Card&ClassID=3564&CategoryID=Answered on 26/6/2006 by Crocus
There are currently no articles for this item.