Walnut And Cherry Are Great Exterior Woods
I’ll admit it, I am not as fast as I’d like to be. I always think that I will get things done quicker than I do. And, I always say that things are done when I mean they are “basically done”, which means that I still have a few things left to do (therefore not done). I like to think of it as being optimistic. Well, while I am being “optimistic”, a lot of other things aren’t getting done (mostly because I am busy working on the thing that I thought was already done).
The one thing usually not getting done is sawing. After all, the logs aren’t going anywhere and a lot of them are just getting better with age. I’ll let them sit for a while, depending on the species, and try to play it just right for special things, like spalting, to happen. Sometimes I push it too far and the log rots and becomes unusable. Species like ash and maple, which have a lot of sapwood, need to be milled sooner than the rest. They (especially maple) will quickly stain, spalt and then rot, while others will be fine. I often use this rotting process as a gauge to decide which log to mill next. I like all of the logs I bring in, and I don’t want any of them to turn into dirt before they get turned into lumber.
Through the years, as I have kept tabs on the disintegrating logs, I have learned what it means to be “durable”. In the books about different species of wood, they always list their durability, which I thought meant how they handle wear and tear, like from a hammer, but they mean from the weather. Turns out some woods last longer outside than others. I knew this, of course, but only from reading it. Now, after all of my “wood collecting”, I know it from watching it happen. Some woods go fast, but some never seem to go. And, they are not necessarily the first ones to come to mind.
I was inspired to write this because of the two that are extremely durable, but no one ever thinks to use outside – two of my best friends – walnut and cherry. These two just don’t rot. I should say the heartwood doesn’t rot. The sapwood on both of them rots as fast as any other sapwood, but the heartwood doesn’t rot. I commonly find old logs with no bark and sapwood that just flakes off in my hand, but the heartwood is fine. It might have cracks in it from the log drying out or bug holes from sitting too long, but the heartwood will be just as solid as the day it was cut down.

This walnut looks rotten at first glance, and although the inside wasn’t perfect, it wasn’t rotten. The inside looked the same as a fresh log. Click on the link near the end of this post to see the inside.

This cherry log came from a tree that stood dead for years before it was cut down and then the log sat for two more years before it was milled. The next photo shows the inside.

The sapwood (dark band at the top of each piece) turned from white to gray on this cherry, but the heartwood was perfect.
Of the species I mill, these are not the only ones that perform great outside, but they are the surprises. I bet almost no one would think of using walnut or cherry outside. They always end up inside because they are so nice, maybe too nice to put outside. I will tell you that this one has me baffled, and as of yet, I have no idea why this is. However, my main interest is to spread the word that walnut and cherry are great outdoor choices. Walnut may not be the best because the price is going up, but cherry is becoming an even better choice as its price is on the decline. If you don’t mind a few knots in your outdoor work, common-grade cherry is very affordable. And, if you are doing a high-end outdoor piece clear walnut may make sense. It is more expensive than Ipe (an imported wood great for outdoor work), but it is easier to work with and it just feels right to use an American wood.
Again, the sole reason I know that these woods are durable is from my own experience. If I have a walnut or cherry log and it doesn’t get cut right away, I don’t sweat it. I know that years down the road that logs from these two species will still have solid wood in them, while others have rotted away. The best example I have is from a recent post about a walnut that I found on the Missouri River. It was the driftiest piece of driftwood you will ever find and the inside still looked like new (click here to check out the post and video from the picture above and to see the inside of the log).
How Big Do (American Black) Cherry Trees Get?

I was meeting with a customer last week and we were going over the details of the job and discussing the wood that I was going to use for their bookshelves – cherry, as you might have guessed. I was going on about how much I like cherry and was making sure to plug the fact that I mill my own trees. During our discussion, which was mostly me talking and him nodding, he asked,”Well, how big do cherry trees get?” I knew then that he was wondering what I was wondering when I started cutting trees. How do you get big boards from such little orchard trees? I explained to him that it wasn’t the type of cherry tree he was picturing. It was an American Black Cherry, which grows in the forest, mixed with other hardwoods. His next question was, “But, it doesn’t have cherries does it?” As a matter of fact it does. They aren’t big and they are in a cluster that looks like grapes, but they are fruit that birds love to eat, and they are definitely cherries. Then I thought and quickly asked, “Are you ready to be shocked? I bet that you have one right here in your yard and don’t even know it.” I wasn’t going too far out on a limb because I had just driven down a long gravel drive with upland hardwoods to get to his house. I hadn’t specifically spotted a cherry tree, but I could smell them (not literally).
As we talked more, our discussion went back and forth from the piece of furniture that I am going to make to the wood that I am going to use, and we talked more about how big the cherry trees get. I explained that they get big like any hardwood lumber tree, but are on the smaller end of the scale overall. An average log size in this area is about 14″-15″ in diameter, inside the bark, on the skinny end. However, it isn’t uncommon for them to be larger. The main problem with larger and older logs is that they tend to have punky/rotten areas in the center of the log, so many bigger logs don’t get milled. For fun (as always) and to prove that they get bigger than orchard trees, I thought I would share a few photos of my larger finds. Notice that we are not phased at all by the size of the larger logs. It’s routine for us.
By the way, as I left his property, I saw a couple of small cherry trees and I am sure that there are more.
- The biggest American Black Cherry log that I found from last year’s tornado.
- A young Martin Goebel from 2003. This was the first log that I milled for Martin. He likes cherry too.
- This cherry log came from the area around the tornado last year in St. Louis.
- This is the widest solid slab of cherry that I have seen (about 32″). It isn’t rotten in the middle, which is uncommon for a cherry this big.
Google Satellite Branches Out Into Log Procurement After Tornados
Almost a year ago, a tornado swept through the St. Louis area. After seeing the destruction, I was surprised no one was killed, and at the same time excited to start salvaging trees. I drove around the first day to get a feel for things, following the trail of downed trees and using bright blue tarps that covered damaged roofs as beacons when I started to stray from the path. The first job was to procure trees before they were cut up, so I had to hustle. It didn’t take long to realize that I was going to have a tough time efficiently covering a 10-mile path.
I went home that night and decided to look at Google maps in satellite view. I love to look at the satellite view normally, but now I had a reason. I imagined I could generally chart the path and pick out spots with the best trees. What I didn’t imagine is how well it helped me out in identifying specific trees. I was very lucky to find that the satellite photos for the area I was most interested in were taken in the early fall. In the early fall the trees are starting to change and they don’t just look like green blobs in the photos.
The ones that stood out the most were walnuts. They lose their leaves early, so in the photos they were bare. The cottonwoods were bare too, but that was it. I could scan the satellite images and find the bare trees, then go see if they were down. All but two that were down were walnuts. I got some walnuts out of the deal, but walnuts didn’t seem to be the most abundant species. As a matter of fact, I only found one block with a heavy concentration of walnuts, but it got me looking.
After closer examination, I realized that I could see the shape of the tree by its shadow on the ground. It told me if it had a long trunk (good for milling) or a short, bushy shape. The shape really helped me identify cherry. Cherry tends to have a wispy top, without much foliage and very little spread. They also tend to have stems with multiple leads. If they were alone in the photos, I could pick out cherry trees from the top. But, if not, and this is totally cool, I could jump down to street view and see the tree like I was driving down the road. This helped me verify that trees were worth looking at when I got calls from friends.
As I was going back to pick the images for this post, I realized that the photos had been updated and that the path of the tornado is visible from distant views. When I realized that, I took a look at Joplin. Wow! In Google, just type in Joplin, MO and click on the map. It looks like they took the photo within weeks of the tornado and the width of the path and the complete destruction is incredible. For contrast, type in Ferguson, MO and realize how much smaller this tornado was, and it was not small. I could have picked up trees all summer.
New 100-year-old cherry; It is (no) lye!
Some woods stain great – some don’t. Oak, walnut and elm come to mind as the great ones. They stain easily and consistently, with no blotches or uneven color. On the other end of the scale are woods like maple and cherry, which are also consistent – consistently frustrating. Hard maple is the worst of the worst, with some of it taking almost no stain (I compare it to trying to stain a piece of glass) and other areas, like end grain, sucking up all the stain in the can. Anywhere that the grain simply changes directions is a spot for blotches to show up.
Right up there with maple is cherry. Although you can get some cherry boards to stain perfectly, many will look like a first-grader did it (and not the one first-grader that pays attention in class). The other problem with cherry is that it is usually expected to be at least medium-dark, which means the wood has to be darkened up somehow. I have a few recommendations for hard-to-stain woods, but for cherry, I have a trick. If you know it, don’t say anything yet.
I don’t remember where I first heard of it, but I was told that lye darkens cherry. That’s right, lye, like the soap or Drano. I didn’t know anything about lye, so I did a little research. And, after using it many times, I can tell you that a little research is all I needed. It is amazingly simple and produces awesome results.
If I want a nice medium to dark cherry and don’t need to match a specific color, I will use lye before anything else. Lye is great because it does in seconds what would happen naturally in a very long time. It chemically changes the color of the wood, allowing all of the figure to show through without blotches. The new color created by the lye also goes below the surface to provide a measure of safety when sanding between coats of finish.
I use Red Devil lye (drain opener), which has apparently been discontinued. Lowe’s carries a crystal drain opener that is 100% sodium hydroxide (the active ingredient) or lye. I, however, have never used this product, so I cannot attest to its effectiveness.
To use the lye, simply mix with water. I use about two tablespoons to 16 oz. of water as a starting point. Test on a sample cherry board to see how dark it comes out – the change will be almost immediate. Add more lye to darken the color or more water to lighten it. To apply, use a nylon brush (natural hair brushes will melt away) to saturate the surface of the wood, keeping a wet edge and let it dry. That’s it.
Handle the lye mixture with caution and follow the safety instructions on the label. Specifically, wear rubber gloves and safety glasses, and make sure you have adequate ventilation.
Treat the wood as if you were using a water-based stain, by raising the grain before applying the lye. After the lye is dry, the wood can be finished and requires no treatment to neutralize the lye. I like to apply an oil finish before the topcoats to make the surface shimmer and really show off the magic of the lye.
No matter how you finish the piece, I think you’ll be amazed at how easily and quickly you can have a piece made from new 100-year-old cherry!