You are currently viewing Species Spotlight ~ Crassula! Not Just Filler – Fabulous!

Species Spotlight ~ Crassula! Not Just Filler – Fabulous!

Crassula (KRASS-you-luh) is a vast genus of succulents that includes well over 1,000 species and cultivars. From petite ground covers up to enormous, tree-like shrubs more than 10 feet tall, crassula grow in many forms. When planning a mixed succulent arrangement, you typically want to use a special variety with star power as the focus of the planting, or “thriller”. Then add other varieties in the roles of “fillers” and “spillers” – those that trail over the edge of the container. Although generally considered a filler succulent, there are crassula varieties that will trail beautifully, and many that will truly thrill! Let’s take a closer look at the crassula plant.

All About Growing Crassula

{Please note, some links in this post may be affiliate links to sites that pay me a small commission if you click on the link and make a purchase. This commission is at absolutely no cost to you. I only recommend products and companies that I have worked with and truly love! ~Kat}

Though crassula developed in many parts of the world, most varieties that have been cultivated originated in South Africa. As you can see, crassula plants develop many wildly varied forms. Let’s take a closer look at what all crassula varieties have in common, then we’ll look at the differences.

Crassula and CAM Photosynthesis

Crassula milfordiae blooms

Crassula have developed some strategies to allow them to thrive in adverse conditions. Like all succulents, crassula store water in the plant – in this case, in the leaves. This is an adaptation that enables the plant to survive in very dry conditions.

Unlike all succulents, however, crassula have developed another strategy – Crassulacean Acid Metabolism, or CAM photosynthesis. All plants turn sunlight into energies they can use, like sugars. The process is called photosynthesis. And all plants take in carbon dioxide (CO2) and release oxygen back into the air, which is called respiration. When plants respire (take in CO2 from the air and release oxygen), they also lose a bit of water in the process. Most plants respire all day and all night, while photosynthesis can only happen when the sun is shining. What is different with CAM is that the plant completely shuts down respiration during the day, and only respires at night. This enables the plant to conserve its store of water while taking in the sunlight.

Some other succulents, like sedum and kalanchoe, employ this clever adaptation, but it was first documented with crassula.

Crassula Blooms

Crassula macowaniana in full bloom

Many varieties of crassula produce showy, long-lasting blooms that are highly attractive to honeybees and butterflies as well as gardeners! Typically, crassula bloom in response to changing day length and temperature changes, conditions not typically found indoors. There are ways to coax a crassula houseplant, like the jade, or money tree, to bloom indoors. But naturally, most crassula with showy flowers produce them from March through September. The flowers are followed by seeds, spread by the breeze to encourage more baby crassula to grow.

Color Changing Crassula

color changes in crassula ovata in shade and full sun

Many varieties of crassula change colors in vivid fashion when given a great deal of direct sunshine. In some circumstances, the color change is related to hormonal changes, preparatory to blooming. In others, color changing succulents are a sign of stress. But in all cases, it is eye-catching and lovely! Both of these plants above are Crassula ovata – also known as the jade plant, money plant, lucky plant, etc. Both are perfectly healthy. There is no need to wonder what is “wrong” with either – they are both doing great! The one on the left is grown in quite a bit of shade, and its coloring is a rich, jade green. On the right, the jade is growing in full sun, flashing chartreuse leaves with scarlet margins. The vivid coloring displayed by some varieties drives hybridization efforts looking for boldly colored crassula under all conditions.

Stacked Crassula

stacked crassula capitella red pagoda

This flashy variety is Crassula capitella, called “Red Pagoda”. In addition to displaying brilliant coloring, this is a great example of a “stacked crassula”. These varieties produce a series of leaves with each set of leaves seemingly stacked upon the set below them. This gives a dizzyingly geometric appeal to these fun plants. Varieties of stacked crassula may have round leaves, or square or triangular. When stacked, the whimsical shapes may form spirals or pendants, climbing vertically or trailing. These beauties have common names that evoke their shapes, like baby’s necklace, string of buttons, Chinese pagoda, shark’s tooth, worm plant, propeller plant, Indian paintbrush and many more.

Long on charm, there seems to be no reason for these shapes beyond flaunting their sheer fanciful flair.

Crassula Care

Crassula Sarcocaulus in bloom

Crassula are typically hardy to USDA zones 9-11. Protect the plants from frost. You can over-winter your plants indoors. All varieties grow well in containers. Most crassula like a lot of light, though some, like the popular jade plant, can be happy with average indoor lighting, and make terrific houseplants year round. Take care to allow for good air circulation around your crassula plants, both indoors and out.

Like most succulents, crassula need a gritty soil mix that drains fast. I use a succulent mix that is formulated for palms and cactus. You might like to make your own, and there are many recipes you can find online. It is critical to only water when the soil is dry. These plants are beautifully adapted to growing in dry conditions. They will die if the soil is too wet for too long. Read more in-depth information about how to water your succulents.

Crassula Propagation

crassula oaxacalum perfect for propagation

Crassula stems tend to be a bit brittle, easily breaking off. This does have an important purpose. This enables the plant to deal with damage caused by wind, foot traffic and foraging animals by creating an opportunity to reproduce. When leaves fall or a stem breaks, it drops to the soil near the mother plant, and begins to take root. You can easily propagate your crassula plant by leaf or stem cutting. While most succulents root well, crassula is among the very easiest to reproduce. I’ll cover two methods of propagation, by stem cuttings and by leaves.

Rooting Crassula Cuttings
crassula arborescens silver dollar

Crassula propagate easily by stem cuttings. Simply cut a piece of stem about 2-4 inches long, leaving at least 2 sets of leaves in place to start your new plant. Remove the leaves from the bottom .5 inch to 2 inches of the stem. You will put this part into your growing medium when you are ready. Leave the cutting exposed to the air in a sheltered spot, out of direct sun for 2-3 days. This allows the cut to heal over, and form a callous. Then “plant” your cutting in dry medium. I like to use the same soil I grow my succulents in, but you can use straight sand, or pumice if you prefer. Leave the stems in the dry growing medium for a couple of weeks.

Until your cutting has developed new roots, it will be unable to make use of any water you apply. Excess water can lead to rot, so leave it dry. After a couple of weeks, mist the soil well with water, and then give it another couple of weeks. In 4-6 weeks, you will have roots forming. Gently lift up on the stem. If it resists – it has rooted, and your new plant is beginning! Transplant to succulent mix now, or leave in place if you started with succulent soil. Water the soil when it is fully dry and allow to drain.

Rooting Crassula Leaves

If you want to root just the leaves, be sure to get the whole leaf. You will need the part of the leaf that attaches to the stem in order to get it to root. Then, simply set the leaves on a pot of succulent soil, out of direct sunlight. Until your leaf develops roots, it will be unable to make use of any water, so leave the soil dry. After 4-6 weeks, you will see new little roots developing, and possibly some tiny, new leaves. Gently top it with a bit of soil, and water lightly.

Congratulations! You have made new baby crassula plants!  ๐Ÿ™‚

Shopping for Crassula

stacked crassula buddha's temple

If you would like to purchase crassula online, Mountain Crest Gardens currently has 36 varieties available.  If you are in a colder region and shopping during winter months, I encourage you to include a heat pack in your order โ€“ it will emit heat for 72 hours to help to protect your succulents from the cold in transit.

There you have it – an overview of the fascinating succulent crassula. Are you growing crassula now, or will you be trying it soon? I would love to know! Please take a moment to leave a comment, and let me know. If you have any questions, I am here to help!

Happy gardening!

P.S. Please subscribe to The Succulent Eclectic today! If you already have โ€“ thank you so much! ?

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P.P.S. Why not join my Facebook Group for succulent-lovers? We talk succulent care, propagation, succulent identification and design. Itโ€™s a warm and welcoming group that would love to meet you!

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This Post Has 16 Comments

  1. Priscilla Moon

    Thank you. I’m just learning about the different types of succulents and this is a very informative post.

    1. Kat McCarthy

      Hi Priscilla,
      Awesome! I am glad you liked it! There is much more to come. Please feel free to ask any questions!

    2. Barbara Robbins

      I am just starting with succulents and am so excited by your postings. I am learning a lot but the problem I find is I have to do mail order as the nursery have very few varieties. Thanks for all the info

      1. Kat McCarthy

        Hi Barbara,
        I am happy to help! ๐Ÿ™‚
        It can be a real challenge to find a wide variety of succulents at the local nursery. You may find that Home Depot has a better selection than some nurseries. You might also want to check into some local succulent societies and associations. They often have free plant swaps that enable you to get access to some really cool varieties! Then, when it comes to ordering online, I can assure you that there are some really impressive companies out there that consistently offer great quality, packaged to arrive looking great and healthy.
        Please let me know if I can answer any questions!

  2. Tricia

    Iโ€™ve been looking for a guide like this since I bought some crassulas from eBay. I lost a few ๐Ÿ™

    The bottom part of the stems started to turn dry, woody, withered looking and it seemed to be coming up the stem and killing the leaves. Was that from under watering?

    I cut off the tops that were still green and they are currently sitting on dry potting mix trying. Hopefully they root.

    Thank you.

    1. Kat McCarthy

      Hi Tricia,

      Your description is good and clear. It does sound like they are not getting enough water. If this is correct – it is good news, because succulents can recover from damage due to underwatering, whereas they tend to just die with too much water. When you say it looks withered, are the leaves wrinkling, like those shown here:×460.jpg ? This is a clear sign the plant needs more water. Feel free to snap a photo and send it to me at [email protected] – I just want to be certain this is the issue.

      I think you have diagnosed it correctly. Does the pot your crassula are growing in have good drainage? Give it a thorough, deep watering when the soil is dry. If the drainage is good and the soil is a fast draining, gritty mix, then water generously and allow it to drain well.

      Meanwhile, let’s take some cuttings! Clipping the tops of the plant, with 2-3 inches of growth will be the quickest way to get new plants. It is important to keep track of which part of your cutting was growing toward the top of the plant, and which end came from the root side of the plant. Carefully remove the leaves from the bottom half to 2 inches, leaving at least 2 sets of leaves intact at the top of the stem. (You can root just the leaves, too!) Let the cut stem heel over for 2-3 days out of direct sun. Poke the lower part of the stem where you removed the leaves into the fast draining succulent soil mix you have. DO NOT WATER at this time. Leave the cutting in the dry soil for 2 weeks, out of direct sun. Then water lightly, and let it remain dry. After a week’s time, water lightly again, and let dry.

      Your stem cutting has now been in the soil for 4 weeks. Gently lift the stem. Does it easily pull out of the soil? It needs more time. If it resists coming out of the soil, the roots are beginning to form and take hold! ๐Ÿ™‚ Continue the very light watering once a week until you see signs of new growth. Then slowly move it into more light.

      The leaves you removed can be set on dry succulent soil out of direct sun. Within a few weeks, you will see new roots begin to form. Mist the leaves lightly just once a week until you see sufficient roots developed to “plant” your new baby crassula.

      You can do this, Tricia! ๐Ÿ™‚ I hope you will keep me posted on their progress! ๐Ÿ™‚


  3. Noelene McArdle

    I love your site., it is very informative. as I am new to succulents. I was also wondering if you post your succulents to Australia or if you know of anybody that does. Thanks in advance.

    1. Kat McCarthy

      Hi Noelene,
      Thanks so much! ๐Ÿ™‚
      I’m afraid I cannot ship succulents outside the U.S., but I see some pretty wonderful sites that do ship a wide variety within Australia! Take a look at – a wonderful selection! Also has a nice selection of succulent gifts along with the plants they offer!
      Please let me know if I can ever answer any questions for you about different types of succulents, or their care or usage!
      Enjoy your new adventures in succulents! ๐Ÿ™‚

  4. Marilu

    Hi Kat , I am so happy I came across your site ! Finally someone who knows what they are doing and explains things I can do on a step by step basis , I have been looking for a person to contact when I donโ€™t know what I am doing, which is most of the time! I am fairly new to this but I love these beautiful little plants! Thanks for all the info that you already put out there, you will definitely be hearing from me soon! Marilu

    1. Kat McCarthy

      Hi Marilu,
      I am so glad you found the site, too!
      While I struggle with photography, and my crafting skills are lacking – I really do love helping people to understand exactly what they need to know to enjoy success with their plants. So bring on any questions! I am happy to help.
      And feel free to let me know of subjects you would like to see covered. I can either add them to my content calendar or reschedule my plans to cover them sooner! ๐Ÿ™‚
      You can do this! I promise!

  5. Karen Bulfield

    Brilliant post. The best.

    1. Kat McCarthy

      Wow! Thanks so much, Karen!

  6. Regina

    I have a 10/12 in x 6/8in concrete planter with a face in front that I think would look great with succulents. It has a prominent spot in the front yard where it gets full sun so it would need to contain drought resistant plants. I have seen some cute trailing succulents and tall ones that look like hair, but I didn’t pay attention to the species. You have any suggestions for a mix that would give a great look?

    1. Kat McCarthy

      Hi Regina,
      What a fun planter!
      I would recommend using sedum morganianum (aka Burro’s Tail or Donkey Tail) as the trailing “hair”. It is a light blue/green. Then I would add a vivid rosette forming variety to act as a fascinator in the hair. I would go with something like aeonium black rose – very dark, nearly black rosette with a bright green center. I think they would look smashing together – and perfect for full sun! ๐Ÿ™‚
      I would really love to see some pictures! ๐Ÿ™‚
      Have fun!

  7. Ingrid

    Hi Kat,
    Another great article!
    I love how you explained about โ€œreading your succulents โ€. I have many succulents and itโ€™s the part I love about taking care of them. Iโ€™ve gotten to know each of their light and water needs as the seasons/weather changes. Youโ€™re absolutely right about it not being a cut and dry light and water schedule.
    The suggestion of using shade cloth is something I picked up last year and has been a lifesaver for many of my plants. Thanks for sharing your succulent knowledge ๐Ÿ™‚

    1. Kat McCarthy

      Hi Ingrid,
      So glad you’re finding the information useful!
      Thanks so much!

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