June is the month of blue flowers, or so it seems in our garden. Sadly, we are missing one of my favorites, Wild Indigo (Baptisia australis), which was lost to sewer repair. I planted a replacement, but it won’t bloom this year.


Even so, there’s the Ohio Spiderwort (Tradescantia ohiensis). Unfortunately, its flowers always close by mid-afternoon. I love the bright golden anthers, they make me think of gold buttons on a blue cape.


Ohio Spiderwort doesn’t run like some other Spiderworts I can name. It just gradually builds sizable clumps. I would like it better if it were a bit shorter and more upright. As it is, I try to give it something to lean on to prevent flopping.


We have a mature Bluestar in the front garden. It grows to the size of a small shrub, much bigger than the hybrid ‘Blue Ice’ in the back. The star-shaped flowers are sky blue.


‘Six Hills Giant’ Catmint (Nepeta x faasenii) is another June bloomer, seen above with Golden Alexander (Zizia aurea).


Hardy Geraniums often come in shades of blue. We have ‘Rozanne’ (above) in a couple of spots. Plus I just planted some ‘Brookside’, which still needs to fill out, along the sunny side of the Driveway Border.


When I call a flower blue I often deploy a bit of gardener’s license. Salvia nemerosa ‘Caradonna’ is clearly purple, but it’s my garden and I have declared it to be an honorary blue.


Clematis ‘Betty Corning’ is just starting to flower.


I’ll say again that if someone would make a hat in the color and shape of a ‘Betty Corning’  flower, and in the right size, I would wear that hat. Though I warn you, I have quite a big head.


Clematis ‘Multi-Blue’ grows on the same tuteur with ‘Guernsey Cream’, and starts to bloom just as ‘Guernsey Cream’ starts fading away.

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And speaking of Clematis, I’m pleased to report that ‘Jackmanii’ is coming back strong after  sustaining some damage during the sewer/driveway construction. It’s just about reached the top of its new trellis.


So I’m expecting a big display of purple ‘Jackmanii’ blooms in a few weeks, though I may choose to call them blue.

48 Comments on “Blue Flowers for June”

  1. “Honorary blue,” eh? Not sure about the botanical ethics in that, but I am sure that I will borrow it. What a useful gardener’s idea! I trust we will see a photo of you in the Betty Corning hat should it ever come to be.

  2. On my computer, all your flowers look purple. However, I know there are relatively few real blue flowers so I’m glad to hear you have several! I tried germinating seeds of blue poppy – a gorgeous blue – it didn’t work and knowing they are notorious for this didn’t make me feel any better!

  3. It is often a fine line between blue and purple and depending on the light and my mood I see them differently every day! I tried growing Spiderwort once and was so disappointed as the flowers faded by lunchtime and the leaves flopped in the heat. It went on the compost heap that autumn. Your blue clematis is lovely… if anyone makes that hat you must show us a picture of it! 😉

  4. The trellis looks great. It will be fun to see the flowers blooming on it. As for the spiderwort, I’ll never forget the day I found a vacant lot in the next town down the road filled with a mix of blue and white flowers! I’d never seen a white spiderwort; they were entrancing. I need to dig out those photos and post a couple.

  5. Beautiful. Blues are the best. I’ve certainly bought lots of plants labeled blue that turned out purple. That’s acceptable but I don’t like for plants labeled purple to bloom pink. That’s taking it too far. Have a good week.

  6. Blue is not an easy color. Most blue flowers are somewhat purplish. Agapanthus happens to be one of the most common flowers here, and is quite blue. Otherwise, there is not much more. Even the jacarandas in Southern California are slightly purplish. My colleague had been wanting to get blue ginger since he was a kid. Now that he finally got a few, he found that they are not ginger at all, but are actually related to the spiderwort.

  7. Many years ago I bought a Rozanne from the landscaper where I worked and gradually it was crowded and shaded to a shadow of itself. So last summer I dug it up and put it in a more open spot that I can see from my window, and now it participates in a call and response with my ohio spiderwort from across the terrace. Alright, the spiderwort actually grow in the terrace, between the bricks. Not great, I know, but I can’t get it established anywhere else so I let it get by with it.
    I’m with you~I’d wear that hat, too! Maybe I should look into creating that!
    So glad your clematis is surging back so enthusiastically.

  8. Ha ha, a ‘Betty Corning’ hat is only befitting a garden fairy… and I’d leave it at that 😀
    Wow, clematis ‘Jackmanii’ is a fast grower! The trellis look so good now, well done!

  9. I love blues! Re: the amsonia, I’m currently dithering between ‘Blue Ice’ and ‘Storm Cloud’. Blue Ice is supposed to be more compact, but I do have room…although not so much room that I’d want a “full size” amsonia. My #1 favorite blue flower is a tender (for me) sort-of-vine, Tweedia caerulea. It’s on my list of “try it again one of these days” plants!

    • Not familiar with ‘Storm Cloud’. The straight species do take up a lot of space, though worth it if you have the space to fill. I like the name Tweedia. Seems there should be a variety T. carulea v. ‘Tweediadee’ and another v. ‘Tweediadum’.

  10. Hello Jason, I like the “honorary blue” title to some plants that are really pushing the definition of blue. I’m glad to see your Jackmanii clematis is doing well. Ours is perhaps doing too well, it’s stretched through a few shrubs, over a rose arch and into a tree. It’s just starting to flower and that’s the only way I can tell how far it has scrambled. I’m looking forward to seeing your wall in flower.

  11. I would love to see you in that hat. Some of these are my favourites too, Betty Corning Salvia ‘Caradonna’ and Geranium ‘Rozanne’. I don’t have Clematis ‘Multiblue’ but clearly I need to get one, it’s fabulous.

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