Sun-loving Blue Plumbago (Plumbago auriculata/capensis)

Posted by Jacqueline on April 9th, 2008 in Plants database

Plumbago auriculata (Cape Leadwort, Blue/Cape Plumbago, Skyflower)

Plumbago auriculata 'Imperial Blue' (Blue/Cape Plumbago) in our tropical gardenIf you love blue flowers and butterflies, this easy-to-care Blue Plumbago plant is then a must in your garden. It is a vigorous grower and a non-stop bloomer, profusely flowering spectacularly all year round especially in the tropics. Early February this year, we came across a huge scrambling Plumbago cascading beautifully over a 10 feet retaining wall of a bungalow. It looked so strikingly stunning in that sea of sky-blue flowers! Simply splendiferous! A pity I was without a camera then!

Plumbago auriculata 'Imperial Blue' (Blue/Cape Plumbago) in our tropical gardenOur potted Cape Plumbago shrubs with lovely pale-blue flowers are kept low and compact, with regular haircuts and they just love it! Each pruning always results with fabulous blue clusters to keep us as delightfully joyful as them! Plumbago loves our tropical sunny weather, but dislikes to be drenched by our tropical rain. Thus, we shade them under our porch but move them around when necessary to provide sufficient sunlight daily, to keep them happy and productive! :D

Plant Profile, Culture and Propagation :

  • Botanical Name: Plumbago auriculata (synonym: Plumbago capensis)
  • Common Name: Blue Plumbago, Cape Plumbago, Cape Leadwort, Skyflower
  • Family name: Plumbaginaceae
  • Plant type: Ornamental shrub, native to Tropical Africa.
  • Light: Full sun to semi-shade, though flowers best in full sun.
  • Moisture: Average water needs. Water regularly, but less once established. It is reasonably drought tolerant. It does not like wet feet, so do not overwater which may lead to root rot. Too much rain on its delicate flowers or leaves may quicken its death.
  • Soil: Though adaptable to any kind of soil, it prefers a mixture of loamy and light sandy soil, slightly acidic pH, and with good drainage.
  • Propagation: Easily propagated from seeds, semi-hardwood cuttings or division. The easiest method of propagation is by separating its root ball or remove rooted suckers from the mother plant.
  • Plumbago auriculata (Blue/Cape Plumbago)Features: Plumbago auriculata is an evergreen perennial shrub with vine-like habit. If unchecked, this fast-grower can reach 3-10 ft (0.9-3 m) high with a similar spread. It can be trained to grow like a scrambling vine on supports or allowed to sprawl on the ground with its long arching branches, or even pruned into a compact mounded shrub.
    Plumbago has slender semi-woody stems that are typically multi-branched or clumping and covered with alternate 1.5 to 2-inch oblong leaves that are yellowish-green in color when young and darken to medium green when mature. Its undulate leaves are thinly textured and at each leaf’s base clasping the stem are little ears (winged-like leaflets), hence the name ‘auriculata’.
    Plumbago auriculata 'Imperial Blue' (Blue/Cape Plumbago, Cape Leadwort) in our garden Plumbago auriculata (Cape Plumbago, Blue Plumbago) in our garden5-petaled tubular flowers are borne in rounded 4-6 inches wide showy clusters at terminal stems. There are sticky, gland tipped hairs on the flower calyx and stickiness on its seed capsule too.
    Flower colors vary, ranging from pale blue to white or darker blue. The variety ‘Alba’ has pure white flowers, ‘Imperial Blue’ has royal blue or baby-blue flowers whilst ‘Royal Cape’ has intense cobalt blue flowers. The white variety is less prolific than the blue ones.
    Plumbago blooms profusely throughout the year in the tropics, as well as in all temperate seasons except for the coldest winter months.
  • Usage: Plumbago is popularly grown in garden borders and beds, in parks, or raised planters along sidewalks and road dividers. Its sprawling habit and vigorous growth makes Plumbago very popular in large gardens, slopes and landscapes, as it quickly covers large areas. Plumbago will be great for window boxes, and make wonderful porch or patio container plant as its arching branches of attractive blue flowers cascade over the sides.
    Plumbago auriculata (Blue/Cape Plumbago) trained over a chain-link fence in the neighbourhood. Shot June 2011Being hardy and resilient, Plumbago will be excellent as a formal or informal hedge as it responds well to pruning. Being vine-like, it is most suited to train on a chain link fence, trellises or espaliered against a garden wall for a dramatic blue effect. If you’re a nature lover, try mass planting Plumbago in your garden to attract birds and butterflies. It is the larval host plant and nectar source for several kinds of butterflies.
    In some regions, Blue Plumbago is traditionally used to treat warts, broken bones and wounds, including a snuff for headaches and as an emetic to dispel bad dreams. As a fun object, its sticky flowers are often stuck to earlobes as earrings by children.
  • Care: Blue Plumbago is a low maintenance plant that practically thrives on neglect. Locate it at sunny and warm sites for best growth and flowering. During watering, try not to wet its delicate flowers. Feed it every 3 weeks or so with a balanced fertilizer during the growing season. You may want to prune it after flowering to remove old stems, or at any time of the year to remove excessive growth and keep tidy. It is extremely resilient and will flower profusely after being cut back or after a growth flush, as it bears flowers on new growth. It is least bothered by pests and diseases.
  • For temperate zones: Hardiness – USDA Zone 8b to 11. Plumbago is frost sensitive, though will quickly recover when killed to the ground. Best to protect the plant when frost occurs. More information at PlantzAfrica.com.

Update: 2011-02-20
Plumbago auriculata (Blue/Cape Plumbago) growing at a relative's garden in Subang JayaThis luxuriant and amazingly large Blue Plumbago bush was seen growing at one of our relatives garden. Simply gorgeous! Think it’s about 1.5 meters tall and as wide.
The bush is planted in a large pot with its base removed and half-embedded into the ground. Looks happy and most contented growing this way and basked by the morning to early afternoon sun!

Last edit: May 30, 2016

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54 Responses to “Sun-loving Blue Plumbago (Plumbago auriculata/capensis)”

  1. Harold Hull Says:
    November 13th, 2008 at 3:01 am

    found everything about the blue plumbago but what the seed looks like

  2. Jacqueline Says:
    November 13th, 2008 at 4:40 pm

    Hi Harold,
    Hmm…I am as curious about Blue Plumbago’s seeds too, have not seen any on our plants so far?

  3. Joy King Says:
    August 5th, 2009 at 7:56 pm

    Help!!!!! My plumbago is suddenly looking horrible. They leaves are turning yellow. What can I do????

  4. Rose Says:
    October 5th, 2009 at 9:37 pm

    I have a plumbago and live in a suburb of Chicago. What should I do for my plant for the winter months. Can I keep it in the ground?

  5. rocky Says:
    May 27th, 2010 at 2:39 am

    i live on Long Island, New York – last winter i brought my plant indoors (didn’t know what it was called) and it bloomed on my kitchen window sill – do i understand that it can be planted in the ground and survive the winters?

  6. Paula Says:
    June 1st, 2010 at 1:47 am

    My plumbago has very few flowers. What do I need to do.

  7. Connie Taylor Says:
    June 19th, 2010 at 6:42 pm

    my plants are dying. They are turning brown and look diseased. It has gone from one plant at a time to another. It is a systemic problem? Could they be getting too much water from the sprinkler system. We live in St. Augustine, 32092..

  8. Jacqueline Says:
    June 19th, 2010 at 9:28 pm

    Hi Connie!
    I’m not sure what’s the matter with your plants but past experiences of growing blue plumbago had proven time and again that their delicate blooms and leaves are very sensitive to too much rain, and coupled with ‘wet feet’ which it does not like, will bring about its demise sooner than expected.

  9. Heather Says:
    September 18th, 2010 at 10:37 pm

    Plumbago have been a staple in my landscape for years. Successfully grown at our old house, I planted many of them when we moved to our new home. They are supposed to be disease and pest free… however, upon much research I have realized that the death and declining plants are caused from “chili thrips”. I use a Bayer spray for insect, disease, and mite control on the plumbago and my knockout roses (also affected). Since living here, I have never had much luck with our landscaping because of the pests!! Meanwhile, at our other house, everything still thrives… Good luck :)

  10. Heather Says:
    September 18th, 2010 at 10:39 pm

    Here is an article

    http://blogs.orlandosentinel.com/features_gardening_blog/2006/08/chilli_thrips_o.html

  11. Jacqueline Says:
    September 19th, 2010 at 10:44 am

    Thanks for sharing your gardening experiences and providing new insights, Heather!
    Cheers!

  12. Evelyn Says:
    September 27th, 2010 at 7:33 am

    My bright blue plumbago was a gorgeous addition to my garden until brush-tailed possums decided to massacre it. (This is in Melbourne, Australia.) Since being decimated by the possums, the plant has developed a horrible sticky whitish dust all over it. I’ve just cut it right back to try to improve its health, but can anyone suggest what this dust might be and how to treat it??

  13. Evelyn Says:
    September 27th, 2010 at 7:40 am

    Just found my answer! It is a naturally occurring chalky residue. So now my problem is just the naughty possums..

  14. A Great Morning on the Coast | Slice of Coastal Life Says:
    December 5th, 2010 at 1:00 pm

    […] I watched them disappear behind their cottage.  In the morning sunlight, the mounds of sky-blue Plumbagos looked purple against the white picket […]

  15. L. A. Says:
    April 26th, 2011 at 8:36 am

    Just planted some Cape Plumbago:) I have heard that overtime that the flowers fade on this variety?

  16. ChrisBrody Says:
    May 28th, 2011 at 12:00 am

    I had the most beautiful plumbago and when I began to lose my sight this was my absolute joy sadly I asked someone supposed to be a gardener to help me trim shrubs back the plumbago dies a beautiful rose has never recovere and now grows at completely the wrong angle and my beautiful philadelphus didnt bloom for 2 years.
    The corneal graft hs been succesful and I am about to plant another plumbago

  17. Jacqueline Says:
    May 29th, 2011 at 9:13 pm

    Hi ChrisBrody!
    We’re delighted to read that you’ve regained your sight and is looking forward to grow plumbago again. May it grow to be more beautiful than your previous and bless you with abundant blooms for many years ahead.

  18. Gardening in the Foreign Service | enclos*ure Says:
    August 13th, 2011 at 12:57 am

    […] love a good chopping spree myself.  (BTW, I think your blue-flowered “majnoon” vine is plumbago.  If so, you can keep it pruned to 2′ to 3′ high and use it as a flowering bedding […]

  19. s.r chakravarti Says:
    August 15th, 2011 at 12:14 am

    just found my answer ! my plumbago is suddenly looking dry, like yellow how ? please tel me about that.
    thanks

  20. Amy Says:
    August 23rd, 2011 at 8:36 am

    Thank you! Thank you! Thank you! I just found out that the beautiful plant I was given as a gift is the Plumbago. It loves the water, and the sun. By the way…the Hummingbirds LOVE it also. Thank God for this web-site.

  21. Jacqueline Says:
    August 23rd, 2011 at 1:49 pm

    You’re most welcome, Amy! We’re delighted for you. Thanks for brightening our day with your sweet words.

  22. Margaret Fitzpatrick Says:
    September 12th, 2011 at 3:23 am

    Thank you for this site, I have found great information about my Plumbago Auriculata, but I have one question please: I have two plants since this summer (2011) and I live in Ireland in the Midlands. There are some blooms appearing now on one plant, but I have read they are frost sensitive. Do I need to dig up the plants and place them in the shed or greenhouse, as we may have a very hard winter this year again down to minus 5 or 6 perhaps. What shall I do? Thank you for any advice.

  23. Carole Considine Says:
    October 3rd, 2011 at 1:25 pm

    I have a Royal Cape which has been beautiful for around 9 years. I trim after flowering each year and always get a beautiful show. However this last week I have noticed one half of the shrub is dying the leaves droop and then go brown. What can I do to save this gorgeous plant.

  24. Patricia Says:
    October 7th, 2011 at 6:09 am

    I just got some additional info on the Plumbago. I love the plant, its just beautiful; but, I still don’t know how I should winter the potted plants I have. Please help me get an answer. I really would like to have them again next year

  25. Jacqueline Says:
    October 7th, 2011 at 12:10 pm

    Hello Patricia,

    We’re in tropical Malaysia without the 4 seasons, so unable to provide the right answers. Sorry!

    However, I’ve just googled about overwintering Plumbago and think the article by Missouri Botanical Garden may be helpful for you. Take a look.

    All the best!

  26. Patricia Says:
    October 8th, 2011 at 12:00 am

    Thank you for the referral, I’ll try their suggestions. Looking forward to seeing the plants next spring. Thanks again.

  27. Jacqueline Says:
    October 8th, 2011 at 9:52 pm

    You’re most welcome, Patricia!
    Best of luck and happy gardening.

  28. scrambledbrains Says:
    October 12th, 2011 at 2:39 pm

    Hello, Thank you for the fantastic information! we inherited the Plumbago hedge 8 yrs ago when we bought this house and this year decided to give it a really serious trim but that went awfully wrong. It was brown and twiggly inside so we cut it to about 4-5 inches from the soil and pulled out all the dead roots. Now I’m worried it wont grow again. What is the best thing I can do to for it? Will it grow back and should I give it some blood and bone?How long will it take to grow back?? It is Spring in Perth AUstralia at the moment. Please give me good news. I did love it. Tas

  29. fumbi Says:
    December 2nd, 2011 at 5:51 pm

    Hi scrambledbrains
    Plumago responds very well to hard pruning so yours should grow back very soon, make sure you fertilise (Seasol) and water every day given you are in Perth. I am in Tasmania and we get enough rain to keep them watered.

    Good luck. Cornelia

  30. Carmel Says:
    January 5th, 2012 at 2:41 am

    Experienced Gardeners:

    I’ve had my plumbago for over a year and it’s only partially bloomed once. I live on the coast in San Francisco, lots of fog. Would that be the problem? or is there something I could do?
    Thank you for your advice.

  31. chrissie Says:
    January 26th, 2012 at 2:55 am

    I love the plumbago , but i noticed that after a flowering spell, the plant tend to get dried up and rot away at the bottom and the plant looks awful. Only the top of the plant looks green, and it appears as if it is dying, but it still sends out new leaves. I live in Trinidad in the Caribbean, and I’m concerned that since we have only two seasons, (wet, and dry) if this could be the reason. I need an answer to this seeming dilema.

  32. Morris Lewis Says:
    January 27th, 2012 at 4:23 am

    I took two (2) slips from my Plumbago in the late fall. Planted each of them in a separate pot and kept them under grow lites in my basement. Both plants have rooted and growing. should I cut each one back or what.

    Due they spread or what. One is about 2ft tall the other one is 3 1/2 ft tall…Plan to transplant them at the end of April. I live in Central Illinois. What should I do about the above paragraph. Thanks a Million. Morris

  33. Marilyn Casanave Says:
    May 25th, 2012 at 7:08 am

    My plumago is planted in full sun in Arizona soil and is in its third year. For some reason the branches and leaves are turning dark and dying. I sprayed it earlier this spring with malathion insect spray as I noted a problem with leaf eating insects on the nearby trumpet vine. I have always watered it sparingly, but daily in the arid heat of summer here. I’ve not had this problem before and note that no flowers are blooming. What to do? H_E_L_P

  34. Chrissie Says:
    June 6th, 2012 at 11:49 pm

    @ Marilyn, I think you need to give your plant a full pruning to get rid of the dead branches and dried up flower shoots. This should give your plant a new lease for growth and flowers.

  35. Patricia Says:
    July 17th, 2012 at 1:17 am

    I love my newly acquired Plumbago, I live in EasternOntario with relatively harsh winters, do You think if I cover it, it will survive or should I bring it inside.
    thank you so much also I was told that the deer do not like it, yippee, they have completely devoured my hostas. I used to get from the USA Liquid Fence rabbit and deer repellant, but cannot find it is Canada, and it really really worked.
    thanks

  36. Jacqueline Says:
    July 19th, 2012 at 7:38 pm

    Hi Patricia! Googling results show that these plants are frost-sensitive and hardy only to USDA Zones 8b-11. Hopefully other visitors from Ontario to this site will be able to assist you as we’re unable to help you further, being in Malaysia without the 4 seasons.

  37. Teresa Says:
    August 31st, 2012 at 3:10 pm

    Hi, just wondering how far apart I should have the plumbago plants in order to form a hedge?

  38. Jacqueline Says:
    September 1st, 2012 at 3:56 pm

    Hi Teresa. My 2-cents worth is plant them about 2-3 ft (60-90cm) apart.

  39. Veronica Goldman Says:
    November 13th, 2012 at 2:16 am

    I marvel as I read the postings here as there is information giving and seeking taking place from all continents and the common thread is plumbago today. Just incredible that we share such promising information yet the heads of state will wage war in a millisecond. Shame shame.
    Thank you for your diversity and your referrals. I need not post yet but I suppose that is about to change as my 6 plum’s are coming and going IN in about 5 days.
    Keep you posted and PEACE to all who enter here; and thensome.

  40. Jacqueline Says:
    November 14th, 2012 at 4:32 pm

    Hi Veronica! Thank you so much for your favourable rating of our site. You made our day!! :-)
    It’s truly wonderful to have visitors from around the world and interacting with one another.
    Yes, do keep us posted about the outcome of your plumbago… we love to hear from you!

  41. Pandalover1956 Says:
    January 3rd, 2013 at 2:09 am

    So glad I found this site. Iam finding out alot about my Plumbagos. They are such a beautiful plant. I live in South Florida and they grow her so beautifully!

  42. Jacqueline Says:
    January 9th, 2013 at 7:31 pm

    Very delighted that you’ve found this site helpful, Pandalover1956! Thanks for sharing your love for this beauty and that it grows well in S.Florida, so others staying in that part of your world may like to grow them too. :)

  43. Charlene Says:
    January 31st, 2013 at 8:02 am

    Help! We had 8 blue plumbagos put in our new landscape last spring here in central Texas. But now, one by one, they are dying back since the Fall. I see these plants all around our area and no others look like mine. We have been very dry, but run the sprinkled once a week. Ive check the moisture and its normal. Only thing I am wondering about is that we have large river rock for mulching. No idea what might be causing it. Could grubs be attacking the roots?

  44. Michael Says:
    March 27th, 2013 at 6:43 am

    My plumbagos have webs on the flowers and what I think is mites. What can I use to rid my plants of these pests.

  45. Jacqueline Says:
    March 28th, 2013 at 1:34 pm

    Hi Michael! We don’t use pesticide as I’m allergic to them. Heather in her comment dated Sept 18 2010 mentioned that she uses Bayer spray for insect, disease, and mite control on the plumbago… you may want to try that. Googling for Bayer spray for plants landed me on this site for 3-in-1 insect, disease & mite control …just sharing in case you’re interested.

  46. Michael Says:
    March 30th, 2013 at 1:18 pm

    Jacqueline….thanks for your information. I’m always looking for non chemical pesticides. I will check into your advice. Glad I found this site.
    Thanks again.

  47. Jacqueline Says:
    April 2nd, 2013 at 5:31 pm

    You’re most welcome, Michael. Hope you have success in ridding your plumbago of pests.
    Happy gardening!!

  48. Lisa Says:
    June 23rd, 2013 at 1:15 am

    My plumbago just won’t seem to flower. The plant itself is beautiful and has occasional flowers on the ends of the plant. I’m guessing you will tell me to cut it back. I live in South Georgia and the plant wintered real well.

  49. Carl Says:
    October 7th, 2013 at 11:15 pm

    I have struggled with my plumbago for years. I’m in mountainous northern California, a forest so thick as to allow moss growth on the ground from late fall, to late spring. In order to keep it alive I’ve had to chase the sunny spots around my property. I haven’t been faithful enough about moving it to get even one flower for 6 years, but I managed to keep it alive, barely. Oh, and whoever told you that deer don’t like it must have had something close by that the deer preferred, as they certainly ate mine just fine. (They ate it down to it’s woody stump.) However this spring I have temporarily relocated to a much sunnier location nearby. My baby, just now, after a summer full of growth and sunshine, has bloomed. Talk about smiling! (I think my face may have cracked.)

    Sun though, is absolutely required. Also, good drainage and ample moisture really help. I just love the way the blooms reach out to show off and make the dome shaped clusters. They’re so fine and dainty. It is a joy to observe it closely and frequently.

  50. Jacqueline Says:
    October 8th, 2013 at 2:02 pm

    Carl… we’re so happy for you. May your plumbago bush continue to cheer you endlessly to make good for lost time.
    Thank you so much for sharing your experiences.
    Keep smiling! :)

  51. Sea Glass Jewelry Says:
    August 8th, 2014 at 10:13 am

    So beautiful and so delicate too.

  52. Jacqueline Says:
    August 9th, 2014 at 2:31 pm

    Indeed, Sea Glass Jewelry! Thanks for dropping by. Have a great weekend!

  53. Sea Glass Jewelry Says:
    November 24th, 2014 at 8:08 am

    A lovely shade of blue. I don’t think they are hardy enough for the UK though.

  54. Jacqueline Says:
    November 28th, 2014 at 1:59 pm

    Indeed they’re beautiful, Sea Glass Jewelry. Give it a try and hope it surprises you. Happy gardening.

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