The human race is a very impatient species. Even more so nowadays with Gen Z wanting everything yesterday. I can understand that when it comes to succulents, I cannot wait till my baby succulents grow and thrive, in the back of my mind though I hear a voice saying ‘succulents are slow growers’……. but are they?
As always, with succulents – due to the vast quantity of species and varieties – the answer is yes and no.
What is the definition of a fast growing plant?
It depends on your individual interpretation of what is slow or fast! To me growing overnight is fast growing! The only plants that literally grow overnight, that I remember from science class, are water cress and mung beans. Some varieties within a species will grow faster than other varieties within the same species. To me a fast growing plant is one that you can see a difference in size within a few months.
Each species will have some varieties that are faster growers than other varieties in the same species. In general though I believe that most species are either fast, moderate or slow growing.
Which conditions increase the growth rate?
There are a two conditions that will effect the growth rate of a succulent.
Growing Season A succulent will grow faster during its growing season than it will in its dormant season. Some succulents do not grow at all in their dormant season and some will grow; but a lot slower. (see post: When do succulents have their growing and dormant seasons? ) So if you purchase/receive a succulent in its dormant season do not be worried if it sits there doing (almost) nothing.
Environment How fast a succulent grows will also depend on environmental conditions. Sunlight, temperature, soil and moisture can all affect the growth rate of a succulent. If the plant has its ideal amount of light, temperature and moisture and grown in the right soil medium it will grow at is optimum rate.
Which succulents are fast growing?
Firstly let me say what I consider to be fast growing. If I can see a succulent has increased in its overall size by about 25% within a 4-6 month period I would consider it to be fast growing. I take a photo of a succulent the first day it arrives, including its name. If you are like me and check your succulents every day you would not notice their growth. Looking back at the original photo can show you how much they have grown in that period.
The following succulents are species that I grow in my garden and have witnessed their growth first hand.
The Aeonium Aboreum below was planted in the middle of its growing season and had formed a thick mass after only 4 months. It would have been a totally different story if I had planted them in the summer when this species of succulent is dormant. (see post: Indestructable…..Aeonium Aboreum ) Don’t forget succulents have a dormant season as well – so make sure you know when this is.
Most Echeveria are fast growing. As long as you can see new leaves forming in the centre of the Echeveria then they are liking their environment and growing as fast as they can. Most of my Echeveria varieties grow for about 9 months of the year due to our short winters.
Graptoveria are a very close relative to the Echeveria species as they are a hybrid of an Echeveria and Graptopetulum (see post: What is the difference between an Echeveria and Graptoveria succulent?) Therefore they also are generally a fast growing species.
Graptoveria Fred Ives
The Crassula species is also a fast growing plant. Especially Crassula Ovata which is also a very hard variety.
Research on the world wide web indicates that the following succulents are of the fast growing variety.
Kalanchoe fedtschenkoi – Lavender Sallops
Sedum rubrotinctum – Jelly Bean Plant
Crassula perforata – String of Buttons
Which succulents are slow growing?
There are a few slow growing succulents.
Euphorbia Millie – Crown of Thorns
Euphorbia Milli is quite a slow growing succulent. The one below suddenly lost all its leaves and flowers so I moved it to a different position and it grew again – but very slowly. It took 8 months just to grow its leaves back but still is not any taller.
Giant Barrell Cactus
There are some succulents that literally grow so slowly you wonder if they are growing at all. The Giant Cactus Barrell (below) is one of these. However, they can live for approximately 100 years.
Lithops are very slow growing but like the Giant Barrell Cactus they live a long time.
How long does it take to grow succulents from a leaf?
Once again depending on conditions a leaf can sprout roots within a week and start to sprout within a 3 week period. To grow to a new plant – depending on the species and variety you can have a new succulent baby within a 3 -4 month period. This is a huge generalisation but has been my experience with a lot of leaf propagation I have tried.
In summary, I would say, most of the popular and more common succulents that are available in Australia are moderate to fast growing. Taking into consideration the general growing conditions of succulents; the weather in most parts of Australia are ideal and even with their dormant season thrown into the mix you will still see a huge difference after one year of growth. Below is a photo of my front succulent garden bed with just a 9 month growing period.