What Do Trees of Heaven Look Like: Fast-Growing Tree ID and Care Guide

What do trees of Heaven look like, and you might be staring at one if you spot a fast-growing tree with jagged, walnut-like leaves and a strong, pungent scent. tree but with a rougher, more uneven edge, almost like a child’s finger-painted outline.

The bark starts smooth and gray but develops deep furrows as the tree matures, giving it a rugged, almost industrial look.

What really sets this tree apart is its fast growth rate—it can shoot up 3-5 feet per year, making it a standout in any landscape.

The small, greenish flowers appear in summer, followed by winged seed pods that resemble tiny helicopters, though they rarely produce viable seeds in colder climates. The scent, however, is the giveaway: crushed leaves release a strong, almost rotten-potato aroma that lingers in the air.

While its rapid growth makes it tempting for quick shade or erosion control, the Tree of Heaven is highly invasive, crowding out native plants and spreading aggressively. If you’re managing one, expect to monitor its spread or consider removal to protect your garden’s ecosystem.

For those curious about its care, it thrives in full sun to partial shade and tolerates poor soil, though it prefers well-drained conditions.

Whether you’re trying to identify one in your yard or deciding whether to plant it, understanding its look and behavior is key. This tree’s bold features make it unforgettable—but its invasive nature means it’s best left out of most landscapes unless you’re prepared for the challenge.

Let’s dive into what makes it so distinctive and how to handle it responsibly.

What you need

How to identify and care for fast-growing trees of Heaven

Here's how to spot this tree's distinctive features and keep it thriving.

The first clue is the leaves—compound, 12-24 inches long, with 7-11 leaflets arranged in pairs along a central stem. Each leaflet is 2-4 inches long, oval-shaped, and has a smooth, slightly serrated edge. The leaves emerge bright green in spring and turn a duller green as they mature, never developing the rich fall colors of many native trees.

The bark is another dead giveaway: smooth and grayish-brown when young, it develops deep vertical fissures as the tree matures. Unlike many fast-growing trees, the bark doesn't peel or flake—it stays uniformly textured. Look for small clusters of white flowers in late spring, though these are often overlooked because the tree is so recognizable by its foliage alone.

Trees of Heaven grow 3-5 feet per year under ideal conditions, making them one of the fastest-growing hardwoods. Young trees have a pyramidal shape, but they quickly develop into a broad, rounded canopy with a short trunk and spreading branches. The branches often grow at sharp angles, giving the tree a somewhat wild, unkempt appearance compared to more manicured species.

One of the most distinctive features is the strong, unpleasant odor emitted by the leaves when crushed. This scent—often described as rotten fish or turpentine—is a natural deterrent for many pests but can make the tree unpopular in residential areas. The odor is strongest in warm weather and fades in cooler months.

In late summer or early fall, look for the tree's winged seed pods, which grow in clusters along the branches. These pods are 1-2 inches long, brown, and resemble small, elongated samaras. Each pod contains one seed, which can spread easily via wind or water. This is why Trees of Heaven are considered invasive—they reproduce aggressively and can outcompete native species.

If you're trying to identify a young tree, check the root system. Trees of Heaven develop suckers—new shoots that sprout from the roots—even after the main tree is removed. These suckers can appear up to 50 feet away from the original tree, making eradication difficult. The roots themselves are shallow but extensive, spreading widely just beneath the soil surface.

Trees of Heaven are often confused with silver maple or boxelder, but there are key differences. Silver maple leaves have opposite branching and deeply lobed leaflets, while boxelder leaves are compound with 3-9 leaflets and a more delicate appearance. Trees of Heaven leaves are larger, longer, and more robust, with a distinctive compound structure that sets them apart.

Another fast-growing tree, the mimosa, has double-compound leaves (leaflets arranged in pairs along smaller stems), but its foliage is lighter green and more fern-like. Trees of Heaven leaves are darker, thicker, and more uniform in shape. If you're unsure, examine the bark and leaf arrangement—Trees of Heaven have a single central stem with paired leaflets, while mimosa has a more complex branching pattern.

Tips & tricks for identifying fast-growing trees of Heaven

Here's what nobody tells you about spotting these trees—details that'll save you from misidentification.

Leaflet Count is Non-Negotiable: When checking the compound leaves in Step 1, count the leaflets carefully—you need exactly 7-11 arranged in pairs. I've seen people count the entire leaf as 12-24 inches but miss that the leaflets themselves are only 2-4 inches each. This precise pairing is the tree's fingerprint. If you see more than 11 leaflets, it's probably a different species.

Bark Texture Tells the Whole Story: The instructions mention the bark develops vertical fissures, but here's the pro move: run your hand along mature bark—it should feel rough like sandpaper, not smooth or peeling. This texture, combined with the lack of fall color, is how I always confirm my ID when leaves aren't visible. The smooth grayish-brown phase only lasts a few years before these distinctive grooves appear.

Seasonal Scent Test: That rotten fish smell in Step 2 isn't just for show—it's your secret weapon. Crush a leaf between your fingers in warm weather and take a deep breath. If you can't smell it immediately, you're probably not dealing with a Tree of Heaven. The scent is strongest in late afternoon when temperatures hit 75°F or higher, so time your inspection right. This is especially helpful when comparing to similar trees that lack this distinctive aroma.

Root System Strategy: When checking for suckers in Step 3, dig just 2-3 inches down around the base—you'll find the shallow but extensive roots spreading horizontally. What most people miss is that these roots can extend beyond the tree's canopy, sometimes up to 20 feet outward. If you're trying to remove one, plan to dig a wide trench around the perimeter first to cut off these hidden connections.

Frequently asked questions

What does a Tree of Heaven look like up close?

The Tree of Heaven (Ailanthus altissima) has a distinctive look: greenish-gray bark that develops diamond-shaped ridges as it matures, compound leaves with 11–41 leaflets (arranged like a feather), and fragrant, greenish flowers in summer. Its seeds are winged and resemble tiny helicopters!

Is a Tree of Heaven invasive? Should I remove it?

Yes, it’s highly invasive in many regions (like the U.S. East Coast) due to its aggressive roots and seed spread. If uncontrolled, it can outcompete native plants. Consider removal if it’s spreading unchecked, but wear gloves—its sap can cause skin irritation!

How fast does a Tree of Heaven grow?

This tree is a speedster! It can grow 3–5 feet per year under ideal conditions, reaching 50–75 feet tall with a 30–50-foot spread. Young trees grow especially fast, making them popular for quick shade—but their rapid growth also contributes to invasiveness. ‍

What are some non-invasive alternatives to the Tree of Heaven?

If you love fast-growing trees but want native, low-maintenance options, try:

• Black Walnut – Tall, shade-providing, and ecologically beneficial.
• Eastern Redbud – Beautiful spring blooms and moderate growth.
• Green Ash – Adaptable and great for wildlife.
• Honey Locust – Fast-growing with thornless varieties available.

How do I kill or control a Tree of Heaven?

Removing this tree requires persistence! Try these methods:

• Cut stump treatment: Apply herbicide (like glyphosate) to fresh cuts or drill holes into the stump.
• Repeated cutting: Saw it down in late winter/early spring and treat regrowth.
• Smothering: Cover small trees with cardboard + mulch for 1–2 years.
• Professional help: For large trees, hire an arborist to avoid regrowth.

Pro tip: Wear protective gear—its roots are tough, and sap can irritate skin!

Wrapping up and next steps

Now that you’ve learned to spot the Trees of Heaven—with their fragrant leaves, star-shaped flowers, and fast-growing charm—you’re ready to embrace their beauty in your space! 🌿 Whether you’re admiring one in a park, adding it to your garden, or simply curious about nature’s wonders, these trees offer both aesthetic appeal and practical benefits. Next up: why not explore how to care for one or discover other fast-growing trees that could be a perfect fit for your landscape?