What Woods to Avoid for Cutting Boards (And Why It Matters)

Someone brought a cutting board to a farmers market in Granby a few years back. Beautiful thing — cedar, hand planed, really nice looking. Priced well too. I watched three people buy one in about twenty minutes. All three made a mistake. I’ve been sourcing Canadian hardwood cutting boards out of Quebec since 2016 and the amount of bad product floating around out there genuinely bothers me. Not bad in a cosmetic way. Bad in a this-will-harbor-bacteria-and-wreck-your-knives way. The problem is that most of it looks fine. Looks great, actually. Wood grain is forgiving that way — almost anything looks decent until you actually use it. So let me just go through what to skip and why. Cedar first since that’s what I keep seeing at markets. Cedar is an aromatic wood. That’s the entire reason people use it for closets and chests — the smell drives moths away. The smell is the wood releasing oils. Those oils don’t stop when you put food on it. Cut chicken on a cedar board and the chicken picks up cedar flavor. It’s subtle but it’s there. Beyond the flavor issue, cedar is soft. Genuinely soft. Your knife doesn’t just cut the food — it cuts into the board every single time. You end up with grooves and those grooves hold bacteria. Wash it all you want, you’re not getting into those cuts properly. Pine is the same story. Spruce too. All the softwoods. They look good, they’re cheap, they sell well at craft markets because the margins are better and most customers won’t notice the problem for a few months. By then they’ve forgotten where they bought it. I want to spend some real time on bamboo because the marketing around bamboo cutting boards is aggressive and almost entirely misleading. Bamboo gets sold as eco-friendly, sustainable, gentle on knives, durable. None of those claims hold up well under scrutiny. Bamboo isn’t wood. People don’t realize that. It’s a grass — an extremely dense, hard grass, but a grass. The hardness comes from silica. Same compound as sand. Same compound as glass. Run a knife across silica particles repeatedly and tell me how the edge holds up. Professional cooks figured out the bamboo problem fast. Home cooks figure it out more slowly, usually when they notice their knives aren’t cutting the way they used to and they blame the knives. And then there’s how bamboo boards are actually made. They’re not slices of bamboo. They’re strips of processed bamboo compressed and bonded together with adhesive. Most of those adhesives contain formaldehyde-based resins. When you cut into the board you’re cutting into glue lines. Those compounds don’t stay put, especially under wet conditions. Some manufacturers have moved to better adhesives — most of them don’t publish what they’re using, so you have no way to know what you’re getting. Bamboo also cracks. Along seams, along glue lines. Once it cracks it’s done. Can’t oil it back to life. Just throws itself away eventually. The sustainability argument — bamboo does grow fast, that’s real. But the processing required to turn raw bamboo into a compressed glued finished product involves a lot of chemical inputs and energy. The environmental math is more complicated than the label suggests. Oak confuses people because it’s genuinely a hardwood. Durable, beautiful, used in furniture and flooring for good reason. The problem is specific to cutting board use. Oak is what’s called an open-grain wood — large pores running through the surface like tiny channels. When you cut meat or fish on open grain, moisture and bacteria go right in. The wood is structured to move liquid. That’s useful in a wine barrel. It’s a food safety problem on a prep surface. I talked to a restaurant buyer a couple years ago who’d been using oak serving boards for about eight months. His chef kept complaining about staining and smell. He’d bought good quality product — it just wasn’t the right wood for the application. Switched to maple and the problem went away. Ash has the same grain structure issue as oak. Cherry, maple, walnut — closed grain, tight pores, the surface resists absorption instead of pulling it in. That’s not a marketing point. It’s why the food service industry landed on hard maple for butcher blocks decades ago and hasn’t changed its mind since. One more thing on oak — high tannin content. Tannins react with certain knife steels and cause discoloration on the board surface. Not a health issue, just ugly, and unnecessary when better options exist. The exotic tropicals I want to handle carefully because some people reading this are woodworkers or resin artists who work with these species and I’m not trying to tell them their craft is dangerous. I’m specifically talking about food prep surfaces. Cocobolo is a documented allergen. The dust — and even contact with finished surfaces — causes skin reactions, respiratory problems, eye irritation in a significant number of people. It’s a Central American tropical hardwood, incredibly dense, genuinely beautiful. It’s also the kind of wood where woodworkers who’ve never had a reaction to anything else suddenly develop sensitivities. Using it as a wet food prep surface that gets cut into regularly is a problem for anyone with sensitivity. Rosewood has similar chemistry. Several species are now restricted under international trade agreements because of overharvesting — so if someone’s selling cheap rosewood boards, the sourcing question is legitimate. Purpleheart is stunning visually and contains compounds that cause headaches and nausea in some people. In small decorative quantities it’s probably fine. As a primary cutting surface the risk doesn’t make sense. The common thread with all the exotic tropicals is that the properties that make them beautiful and durable — resistance to insects, fungi, rot — come from chemical compounds the tree evolved to produce. Those compounds don’t become inert when you mill the lumber. Teak is worth a quick mention too. It’s a great outdoor wood, handles moisture well, used on boats for good reason. But it has high silica content like bamboo — bad for knife edges. The natural oils in teak also affect food flavor. And it’s mostly imported from Southeast Asia which raises its own supply chain questions. Plywood. MDF. Anything composite. I shouldn’t have to include these but I’ve seen enough to know I do. Plywood is wood veneers bonded with adhesive — urea-formaldehyde or phenol-formaldehyde resins depending on grade. Neither belongs near food. MDF is wood fiber and synthetic resin binders compressed into sheets. Not real wood. Absorbs water, swells, falls apart. The only reason it ends up as a cutting board is cost. Dollar store boards, certain discount import products, things that seem suspiciously cheap — a lot of these are particle board or fiberboard with a wood-look veneer face. You can tell by the weight. Pick up a large solid maple board and it’s heavy. Pick up a particle board board the same size and it’s surprisingly light. If you think “huh, that’s lighter than I expected” — trust that instinct. Pressure treated lumber I’ll keep short. Never, not once, not for any reason. It’s saturated with chemical preservatives specifically designed to be toxic to biological organisms. That’s the point of the treatment. Those chemicals don’t become food-safe when the wood ends up on a kitchen counter. It’s usually greenish and stamped with treatment codes. Occasionally someone builds cutting boards from it. Walk away. Now walnut — I want to be honest here because walnut is one of our best selling products. American black walnut, tight grain, genuinely food-safe, makes an excellent cutting board. We move a lot of it and I’d recommend it without hesitation to most buyers. But black walnut contains juglone. If you’ve ever tried to grow tomatoes near a walnut tree you know what juglone does. It’s a real compound with real effects. For most people using a walnut cutting board it’s not a meaningful concern — the exposure from normal use is low. What I’m saying is that if you’re buying walnut boards to customize and resell, which a lot of our customers do, you should know this. Someone with a tree nut sensitivity is going to ask. Better to have a real answer. So what actually works. Hard maple is the straightforward answer for most buyers — around 1,450 on the Janka hardness scale, tight closed grain, resists moisture well, easy to maintain, lasts for years. Butcher blocks are maple. Bowling alley lanes are maple. Surfaces that take daily punishment because the wood is suited to it. Cherry is softer but still solid — good grain structure, food-safe, develops a nice patina. Walnut is the premium option, darker and more dramatic, slightly softer than maple but more than hard enough for kitchen use. Those three are what we carry at Wholesale Cutting Boards. Canadian hardwood, Quebec-based, same quality coming in every shipment. We don’t carry the softwoods or exotics or composites. Not because we couldn’t. Because they’re not what our customers actually need, and honestly because I don’t want to sell something I wouldn’t use myself.