Gray-green calandrinia (Cistanthe grandiflora) shrubs sit quietly, building their strength, from late summer until spring. Then, like the fireworks they resemble, they explode with neon-bright blooms.
Here and in my new video you'll find out how to keep calandrinia healthy and flowering, and how to use it to enhance your own garden.
Calandrinia is native to Chile. Rising above its oval, gray-green leaves float masses of magenta, poppylike flowers. Buds along spaghetti-thin, branching stems open successively.
The 2- to 3-foot-tall flower stems of calandrinia are unusual among succulents.
Shrubs attain a height of one to two feet, and under ideal conditions spread 3 to 4 feet.
This is how calandrinia looks out of bloom, in midwinter...
...and here's the same plant in spring.
Incidentally, calandrinia is good for gardens plagued by deer and rabbits. Neither eat it.
Calandrinia care and cultivation
This South American succulent's requirements are much the same as those of common and popular South African succulents, such as aloes, kalanchoes, jades and haworthias. However, calandrinia prefers being in the ground, not in pots. Its roots need room to spread.
Calandrinia is a "heavy feeder," a nursery term. I like time-release fertilizers, and Osmocote Plus is a good one for flowering ornamentals. (Affiliate link)
Calandrinia also is more cold-hardy (down to 20F) compared to similar-looking, leafy shrub succulents that melt at 32F.
- Deadheading: When blooms are spent and no buds remain, cut stems where they emerge from plants. This tidies the shrubs and encourages repeat blooming.
- Pruning: During winter dormancy, keep plants compact by trimming them a third to a half their height. Stems will branch where cut and send forth new leaves followed by flowers.
- Propagation: A bonus of pruning are cuttings you can use to fill garden gaps.
Light, heat, soil, fertilizer, water
Calandrinia needs sun to bloom and thrive, but to get the amount it needs, it has to be out in the open, which---depending on where you live---may expose it to too much sun, especially in summer.
Case in point: I’m nine miles inland from the Pacific at 1,500 feet, and although I do grow calandrinia in my garden, it's clearly happier nearer the coast. When summer temps rise above 90 degrees, it loses some of its leaves, and flowering ceases.
Surround the plants with mulch or a crushed-rock topdressing to keep weed growth down and hold moisture in the soil. Topdressing will enhance the look of your garden, too.
Given too much sun, calandrinia stresses to shades of rose. The redder the leaves, the slower the growth, and the fewer the flowers.
- Rich soil helps promote lush foliage and a better bloom show. Amend garden soil with compost, or dig a planting hole twice the diameter of the nursery pot and backfill with commercial bagged potting soil.
- Improve drainage and soil aeration with pumice or perlite (approximately 20 to 30 percent of the soil mix).
- Water regularly. A good soaking once a week (twice weekly during heat waves) should be adequate, providing roots don't sit in soggy soil.
Where to put calandrinia in your garden
All flowers grow in the direction of greatest sun, a phototropic tendency especially noticeable in those with tall, skinny bloom spikes.
I inadvertently planted calandrinia where its flowers later blocked a pathway. I didn't anticipate they'd lean toward morning sun.
Keep contrast and repetition in mind
It’s eye-catching to combine complimentary colors, and when it comes to calandrinia’s neon magenta, that means yellow or yellow-green flowers and foliage---the brighter the better.
Contrast calandrinia with yellow-flowering succulents such as Sedum rubrotinctum, aeoniums, and Lampranthus 'Lemon' ice plant. Calandrinia also looks amazing with anything orange, like aloe spires, California poppies, and Euphorbia tirucalli ‘Sticks on Fire’.
This succulent landscape includes calandrinia, blue Senecio mandraliscae, orange nasturtiums and aeoniums. At center is Aeonium ‘Zwartkop’ with conical yellow flowers and dark burgundy leaves. Francesca Filanc garden, Rancho Santa Fe, CA
In a stunning example of repetition, Lampranthus productus ice plant echoes calandrinia's magenta flowers.
Should it go in the front...
Used as a foreground plant, calandrinia suggests a beaded curtain. Behind it is Agave attenuata.
...or the back of your garden?
In the streetside garden below, Jeff Moore of Solana Succulents nursery used calandrinia as an airy background plant. It draws the eye into a landscape that flows around boulders and rock pathways.
Calandrinia's butterfly-like flowers float behind aloes, agaves, echeverias, barrel cacti, blue Senecio mandraliscae, Aeonium 'Zwartkop', red-flowering Euphorbia milii, and mounding Portulacaria afra.
P.S. Like this garden? See more of it in the video. ;+)
Got a pool? Get calandrinia!
As with most nonspiny succulents, calandrinia makes a good-looking, debris-free landscape enhancement alongside swimming pools.
Its flowers glow beautifully when backlit, and (gasp) are gorgeous mirrored in still water.
Can you tell the direction of greatest sunlight? And look at those lacy shadows!
These two pool photos and the photo at the top of the page are of the garden of Ken and Barbara Kubarych, Del Mar, CA.
Create a "desert" garden
Calandrinia planted amid columnar succulents (here, Euphorbia ammak) suggests desert wildflowers in spring. Peggy Petitmermet garden, San Diego
Look for 'Jazz Time'
Find calandrinia (don't forget, it's officially Cistanthe grandiflora) late winter through spring at garden centers and succulent specialty nurseries.
Cistanthe grandiflora (Calandrinia spectabilis) 'Jazz Time' Photo: Waterwise Botanicals nursery
I've heard that the Cistanthe grandiflora cultivar ‘Jazz Time’ is tougher and longer-lived than the species. Maybe you can tell the difference; to me it looks the same.
Now it's your turn...
As alwlays, your comments and questions are most welcome! Do let me know if you found this helpful, and share your own experiences with this lovely Chilean succulent.
Related Info on This Site
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