How to Propagate a Coastal Coral Tree (Erythrina Caffra)

I’ve been noticing over the last year that Mind Your Dirt receives a great many inquiries about the Coastal Coral tree. Two of my articles on the species gets read daily, and often several times per day. This article covers the species as a whole, and this article discusses when and how to prune erythrina caffra.

I’ve often wondered what it is about erythrina caffra that causes so many people to make their way to my humble doorstep in search of answers. The species itself is indeed a beautiful specimen tree with an amazing sweeping short and stout umbrella like canopy, both alien and breathtaking bright red flowers and powerful and very organic flowing trunk and branches. Just see for yourself, I went out hunting for photogenic specimens just for you. You’re welcome.

Coastal Coral Propagation 04_Coastal Coral Balboa Park

A beautiful smaller specimen flanking the Cabrillo bridge in Balboa Park, San Diego, CA.

Coastal Coral Propagation 05_Coastal Coral Balboa Park_Trunk Detail

On the opposite side of the Cabrillo bridge in Balboa Park sits another specimen. Here is a detail of the trunk.

Coastal Coral Propagation 03_Coastal Coral Balboa Park_Branching Detail

Off of Park Blvd. alongside Balboa Park. This coastal coral is a detail of the feature image above. A lovely example of that broad, sweeping (yet stout) trunk and branching.

So I can see the interest, but why is so much Interwebish (I know, relax) traffic drawn to this subject? Mind your Dirt offers a plethora of stories of equally amazing species all over it’s back pages. What drives this keen interest to the coastal coral tree?

Then it struck me. Several years ago when I was researching ways to propagate the species online, I had a hell of a time finding solid propagation information. A bit here, a smattering over there; but nothing solid and concise. To quote my past self…

“I scoured The Interwebs for hours looking for cutting propagation techniques. To no avail. Then I stumbled upon a PDF put together by some remote horticultural school in some small farm community somewhere in nowhere USA. The farmers were using coastal coral trees as natural fences and had a technique to quickly propagate large six foot branches! It was absolutely perfect and if I could find it again I’d link it here to give these saviors proper credit.”

Only in this day and age would one consider “scouring for hours” to be any form of extensive research, but if you know how to search effectively it shouldn’t take this long to find info on a relatively well known species. So that’s what I’m here to do; share that seemingly lost information so that it can have a new forever-home on The Interwebs and all you amazing people can begin to grow and love this amazing tree as well! How nice of me huh?

I have tried many different methods for propagation of this species (to grow as bonsai stock). Seeds are perfect, but they take a wee bit longer to achieve a beautiful and stately tree in the yard. I tried taking smaller six inch segments of the new green growth thinking that they would root successfully. I believe I tried about twenty or so of those. All of them rotted into nothingness in short order.

The key is to take larger woody branch sections and allow them to dry out before potting them. Without further adieu, here is how to grow a coastal coral tree…

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Succulents Before Swine

There are two swine in this story. This cute little planter and myself. You see, I suffer from that typical male character trait of never truly knowing what to get as gifts for my loved ones birthdays. My caveman brain has trouble thinking beyond simple manly gift ideas that women can receive and have a genuine warm smile that will remain when I’m out of range. My stupid and useless caveman reptilian brain. Here’s an illustration of it working at maximum capacity:

Caveman Brain

Jim’s Brain at Maximum Capacity.

My loved ones are very kind and can fake happiness so well when my well-intentioned gift idea is presented to them in a clumsy and unsophisticated manner.

Don’t even get me started on cards. I have no idea why they are important and even less of an idea as to what makes a card a good one. When I receive cards, I don’t know what to do with them at all. And why do we keep cards? What’s their expiration date? Our reptile mind can’t grasp this whole industry. This perfectly sums up man’s thoughts on cards…

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How to Repot a Bonsai: The Chinese Elm

I’m not exactly certain as to how old my Chinese Elm bonsai is. I know it’s the oldest bonsai I have in my collection, but I am not the first owner so I can’t be sure its exact age. Lets just say it’s old and leave it at that. Old enough for me to have been afraid to repot it for the last few years. Today is the day where I must get over that fear and dive in head first.

It’s growth has been stunted the last year and a half, so I just know that the pot it getting root bound and the soil is spent. It’s time to sh*t or get off the pot, if you will. So, with that said, let’s dive in!

Here it is in its shabby state.

1b_Chinese Elm

Chinese Elm Bonsai

Try to ignore the wild growth on the left side, I’m trying to create some new branching so it’s gonna look unsightly for a while. Notice instead the general lack of foliage and the shabbiness of the soil. Gross!

3_Chinese Elm Detail

Chinese Elm Nebari

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The Makings of a Ficus Bonsai

This little fella has just taken root in its new mini pot. It hasn’t really begun training yet because I want it to get accustomed to its new home. I’ve only cut it back to promote root growth. I might make a cascade from this baby bonsai. It seems pretty well established so far so it’s training shall soon begin.

I trimmed this branch off of a mother tree and then simply stuck it in water for a month or two near my kitchen window, which is a North East facing window. Nice light there and I always have some kinda starter plant there. Check it out… Read More


The Pineapple Express: how to grow and propagate a pineapple, over and over again

As promised, I’m going to share the results of my feeble pineapple efforts. I ordered the small plant online as an add on to my Ficus Religiousa, or Bodi Tree (which was really hard to find by the way). The shipping was free to add it on, so I figured why not. I am fortunate to be living in a zone 10, so I can grow these babies as they only grow in zone 10 to zone 11 outdoors. You can grow them indoors, but they’ll be small so don’t get too disappointed and don’t invite friends over for the “big harvest”. I potted mine in a 4″ pot and gave it what love I could muster in hopes of one day eating my own homegrown pineapple.

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Winter Pruning of the Coastal Coral Tree (Erythrina caffra)

Ever since I began my journey studying the art of bonsai, I have been obsessed with harmonious tree patterns. How the branches relate to each other, the shape of the trunk and the root flair (or nebari in bonsai circles) as well as the silhouette of the tree as a whole are all fascinating to me. When working with bonsai, we are always trying to exaggerate these traits to make the tree appear as majestic as its full sized versions. Many of the techniques and designs used on bonsai can also translate into a full sized tree. Now whenever I plant a tree, I can’t help but think about what branches will be dominant, what will be pruned and how I want to tree to grow. My days of just planting and letting nature take over are long gone. Read More


My Magical Coastal Coral Tree…On Steroids.

I’ve been in love with the Erythrina Caffra (Coastal Coral) tree since I first laid eyes on one in full bloom. They have them scattered throughout San Diego near highways and parks and the like. This tree drops all of its leaves simply to allow the flowers to grow unimpeded and in full view for pollinators and tree minded people like me. Just look at that color! Read More


Curb Appeal! When life gives you lemons, say “screw these lemons, I’m gonna make a garden!”

About a year ago, I thought it would be a nice idea to plant a few ornamental grasses on the front edge of my fence. A way to bring joy and beauty to the good folk walking down the street. Also a way to say, “Hey, lets not revel in our vacant dirt lots and display our garbage on the front lawn like we are on the show Sanford and Sons. Let’s instead create some spaces to be proud of and try to class up the neighborhood.” So I did. Read More