Ipe vs Cumaru vs Tigerwood: Tropical Hardwoods for Garden Projects

When Domestic Wood Is Not Enough

White oak lasts 15–20 years in ground contact. Cedar gives you 8–12. For most raised beds and garden projects, that is plenty. But some projects demand more: a raised bed that you never want to rebuild, a planter that will outlast the deck it sits on, or outdoor furniture that shrugs off decades of weather without a single coat of finish.

That is where tropical hardwoods enter the conversation. Ipe, cumaru, and tigerwood are the three species you will encounter most often at specialty lumber dealers in North America. All three are extraordinarily dense, naturally rot-resistant, and built to last 40–75 years outdoors. They are also expensive, heavy, and — if sourced carelessly — environmentally problematic.

We have worked with all three species on garden builds over the past eight years. Here is an honest comparison to help you decide if tropical hardwood makes sense for your project, and which one to choose. For domestic alternatives, see our comparisons of the best wood species for raised beds and white oak vs cedar.

The Big Three: Side by Side

Ipe: The Gold Standard

Ipe (pronounced "EE-pay") is the wood that started the tropical hardwood craze in North American outdoor construction. At 3,510 Janka, it is harder than most stone tile. It does not splinter, does not rot, resists fire, and laughs at termites. The Coney Island boardwalk was built with ipe. So were sections of the Atlantic City boardwalk, multiple botanical garden walkways, and countless high-end decks.

For garden projects, ipe is overkill in the best possible way. A raised bed built from ipe will likely outlast the house it sits next to. But you pay for that permanence:

• Cost: $12–$18 per board foot means a 4×8 raised bed costs $350–$550 in lumber alone. That is 2–3 times the cost of white oak.
• Weight: At 69 pounds per cubic foot, ipe is nearly twice as dense as white oak. Moving and positioning boards requires planning (and usually a second person).
• Tooling: Ipe eats carbide saw blades. Budget for replacement blades — you will go through them 3–4 times faster than with domestic hardwoods. Pre-drill every screw hole or you will snap fasteners.

Our take: ipe makes sense for a forever project where cost is secondary to longevity. If you are building one raised bed and never want to think about it again, ipe is the answer.

Cumaru: The Smart Alternative

Cumaru, often marketed as "Brazilian teak" (it is not related to true teak), is the wood we recommend most often for gardeners who want tropical hardwood performance without the full ipe price tag. At 3,330 Janka, it is only slightly softer than ipe — still harder than any domestic species you will find at a lumber yard.

The differences from ipe are subtle:

• Color: Cumaru runs warmer and more reddish than ipe's olive-brown tones. Fresh cumaru has golden highlights that are genuinely beautiful. Both species weather to silver-gray if left unfinished.
• Price: 30–40% less than ipe. A 4×8 raised bed in cumaru runs $200–$380 in lumber.
• Workability: Marginally easier to cut and fasten than ipe, but you still need carbide blades and pre-drilled holes. It is not a casually workable wood.
• Scent: Freshly cut cumaru smells like vanilla or cinnamon — the tree produces tonka beans, used in perfumery. It is a pleasant surprise when you make your first cut.

Our take: cumaru is the sweet spot for most garden projects. You get 85–90% of ipe's performance at 60–70% of the price. If you are building planters, outdoor furniture, or a premium raised bed, cumaru is where the value is.

Tigerwood: The Beauty Play

Tigerwood (goncalo alves) is the most visually striking of the three. Fresh-cut boards display vivid orange-brown tones with dramatic dark streaks — it looks like a wood that was designed by a graphic artist. At 2,170 Janka, it is the softest of this trio but still harder than white oak (1,360) by a wide margin.

• Color: The tiger striping is unique and eye-catching. No two boards look the same. If aesthetics matter — a front-yard planter, a visible garden feature — tigerwood makes a statement.
• Price: The most affordable of the three at $6–$10 per board foot. A 4×8 bed runs $175–$300.
• Workability: Noticeably easier to cut and shape than ipe or cumaru. Standard carbide blades last longer, and you can sometimes get away without pre-drilling in thinner stock (though we still recommend it).
• Lifespan: 30–50 years is excellent by any standard, but it is the shortest-lived of the three. For garden projects where you want decades of life but not necessarily a half-century, that is a perfectly reasonable trade-off.

Our take: tigerwood is ideal for visible, decorative projects where the grain pattern adds value — deck planters, raised bed surrounds, outdoor furniture. For a bed that will be buried behind the garage, the aesthetics are wasted.

FSC Certification: Why It Matters and How to Verify

Here is the uncomfortable part of the tropical hardwood conversation: all three of these species come from tropical forests under varying degrees of ecological pressure. Illegal logging of ipe and cumaru is well-documented in the Brazilian Amazon and across Central America. Buying uncertified tropical hardwood carries a real risk that you are funding deforestation.

FSC (Forest Stewardship Council) certification is the most credible third-party standard for sustainable forestry. An FSC-certified board comes from a forest that is managed for long-term ecological health, not just timber extraction. Here is how to verify:

1. Ask for the FSC certificate number. Every certified dealer has one. It looks like "FSC-C######".
2. Check it at info.fsc.org. Enter the certificate number and verify it is active and covers the species you are buying.
3. Look for the chain-of-custody label. FSC tracks wood from forest to final sale. If a dealer says their wood is "sustainably sourced" but cannot produce FSC documentation, that claim is unverifiable.

FSC-certified tropical hardwood costs 10–20% more than uncertified. That premium pays for third-party auditing, community engagement in harvest regions, and forest management planning. It is worth it. If you cannot find FSC-certified stock, domestic white oak and black locust are excellent alternatives that don't carry the same sourcing risks.

When Tropical Hardwood Makes Sense — and When It Doesn't

Use tropical hardwood when:

• You want a 40+ year lifespan without maintenance or chemical treatment
• The project is permanent, visible, and high-use (front yard, commercial, public garden)
• You can source FSC-certified stock from a reputable dealer

Stick with domestic species when:

• Budget is the primary concern — white oak gives 15–20 years at half the price
• You might want to modify, move, or rebuild within 10–15 years
• FSC-certified tropical stock is unavailable in your region
• You are building multiple beds and cost multiplies quickly

Visit our materials and buying guide hub for more species comparisons and sourcing advice.

Ready to start your build? Browse our curated wood selection — we stock FSC-certified tropical hardwoods alongside domestic white oak and cedar, all hand-selected for garden projects.

Frequently Asked Questions

Is ipe safe for food-growing raised beds?

Yes. Ipe, cumaru, and tigerwood are all untreated natural woods with no chemical preservatives. They are safe for growing vegetables, herbs, and fruit. The natural oils that make these woods rot-resistant are not water-soluble and do not leach into soil in meaningful quantities.

Can I stain or oil tropical hardwood?

You can, but you don't need to for protection — these woods are naturally weatherproof. If you want to preserve the original brown color and prevent the silver-gray patina, apply a penetrating oil finish (like Penofin Hardwood or Ipe Oil) once or twice a year. Without finish, all three species weather to a consistent silver-gray within 6–12 months.

Where do I buy tropical hardwood?

Specialty hardwood dealers and decking suppliers are your best bet. Big box stores rarely stock ipe, cumaru, or tigerwood. Search for "tropical hardwood lumber" or "ipe decking" plus your city. Online suppliers like Advantage Lumber, Brazilian Direct, and DeckWise ship nationally. Always ask about FSC certification before you buy.

How do I fasten tropical hardwood?

Pre-drill every hole — no exceptions. These woods will snap standard screws and split if you drive fasteners without pilot holes. Use stainless steel or ceramic-coated screws rated for hardwood (GRK Climatek, SPAX PowerLags, or dedicated ipe screws from DeckWise). For visible surfaces, consider stainless steel trim-head screws for a cleaner look.

Does tropical hardwood crack or check?

Small surface checks (hairline cracks along the grain) are normal in dense tropical hardwoods, especially during the first year as the wood acclimates to your local humidity. These checks are cosmetic, not structural. They stabilize after the first seasonal cycle and do not affect the wood's longevity or strength.

Considering tropical hardwood for your next garden project? Join our newsletter for sourcing tips, project plans, and honest material reviews from builders who have used the stuff.