What Is the Tallest Redwood Tree? Meet Hyperion

Hyperion is the tallest known living redwood and the tallest known living tree, measuring about 380 feet, or 116 metres. It is a coast redwood, Sequoia sempervirens, growing in California, not a tree you should squeeze beside a house in a suburban garden.

What is the tallest redwood tree?

The tallest redwood tree is Hyperion, a coast redwood in California recorded at about 380 feet, or 116 metres, tall. That makes it roughly as tall as a 37-story building, according to Oregon State University Extension, and taller than any known living tree.

Hyperion is not a giant sequoia. Those are wider and heavier in many cases, but coast redwoods hold the height record. The tree belongs to Sequoia sempervirens, so use the plant database if you are checking the species before buying anything labeled simply “redwood.”

The recorded number is about 380 feet, not a promise that every coast redwood reaches that height. Oregon State reports that mature trees commonly reach 240 feet and can exceed 300 feet, while Hyperion is an exceptional specimen.

That distinction matters in a garden. A tree can be ordinary for its species and still be enormous for your property.

How tall is Hyperion compared with a house?

Hyperion is about 380 feet tall, which is around ten times the height of a typical two-story house and roughly equal to a 37-story building. A house roof, a utility line, and a mature coast redwood are not in the same scale of problem, even if the young tree looks harmless in a five-gallon pot.

A two-story house is commonly around 20 to 25 feet high, depending on the roof and floor heights. Hyperion would rise far above it, while a mature coast redwood with a 240-foot height would still tower over most neighborhoods.

The practical point is not that your tree will become Hyperion. The point is that coast redwood is genetically built for height, and the species can grow 2 to 6 feet per year during its first decade in suitable conditions, as documented by OSU Extension.

Everyone says, “It is only a little tree right now.” In practice, ten years is not long in tree time. It is long enough to make a bad planting location expensive.

Why do coast redwoods grow so tall?

Coast redwoods grow so tall because coastal California provides dependable moisture, including summer fog that reduces water loss and allows the trees to take in some moisture through their foliage. That helps them keep moving water toward crowns dozens of stories above the ground, according to this redwood guide.

The fog is doing serious work. It is not decoration drifting through a movie scene. Summer moisture extends through the dry season, when many other tall trees would be forced to slow down.

There is still a physical limit. Water has to travel upward against gravity, and the higher the crown climbs, the harder that movement becomes. The same source estimates a practical ceiling near 400 feet, which puts Hyperion close to the tree’s likely upper range.

Austin does not have California’s coastal fog. We have August, which is a different kind of teacher. A coast redwood planted here would need a site and irrigation plan that do not resemble the conditions that made Hyperion possible.

Can you plant a coast redwood in a home garden?

You can plant a coast redwood in a home garden only where you have a very large, open site and enough distance from structures, pipes, septic systems, driveways, and paving. For an ordinary urban lot, I would not plant one because its rapid growth and large root system can create costly damage.

The root problem is the part people skip. Coast redwoods develop large, invasive root systems that can damage pipes, sidewalks, and foundations, so the tree needs more room than the nursery tag usually communicates.

Do not put one beside the foundation because the empty bed looks sad. Do not put one over a septic system because the back corner feels unused. Do not put one six feet from a driveway and hope pruning will solve it. Pruning changes branches, not the basic footprint of the roots.

If your property has acreage, a safe planting area may exist well away from buildings and hardscape. Check local tree ordinances before planting, because large trees can be regulated even when the property is privately owned.

How fast does a coast redwood grow?

A coast redwood can grow about 2 to 6 feet per year during its first ten years in full sun and suitable conditions, and it may add 3 to 10 feet annually later, according to the research summary and OSU Extension. The exact rate depends on climate, water, soil, and competition.

OSU also reports that a coast redwood may grow about 18 inches in its first year, then accelerate during the first decade. That is why a sapling can look manageable at planting and become a major site decision before the next fence replacement.

A rule of thumb says a tree takes decades to become large. That is true for some trees and incomplete for this one. At 2 feet per year, a tree gains 20 feet in ten years. At 6 feet per year, it gains 60 feet. The range is the warning.

Full sun supports strong growth, but “full sun” is not the same as “plant it anywhere sunny.” The tree still needs adequate moisture, soil volume, and separation from infrastructure. Fast growth is not free growth.

Where should a coast redwood be planted?

A coast redwood should be planted only in a broad, open area with substantial separation from houses, septic systems, driveways, sidewalks, foundations, and buried pipes. Choose the site before buying the tree, check local ordinances, and allow for a mature root system rather than judging the space by the nursery container.

For an Austin property, I would start with the hardscape, not the tree. Find the foundation, water lines, septic field if you have one, driveway edges, and overhead conflicts. Then ask whether the remaining open ground is large enough for a tree that can exceed 240 feet at maturity.

The planting hole is not the whole project. Digging a wider hole does not make a poor location safe, and adding a thick layer of rich soil does not cancel the tree’s future size. Central Texas may give you black clay that swells and shrinks, or limestone that stops the shovel eight inches down. The tree still needs a site that can carry its roots without meeting your patio.

If the only available spot is beside the house, the honest answer is no. Use the plant database to compare trees suited to your actual space, or get a concept for your yard before a nursery purchase turns into a removal bill.

What should you do about a redwood you are standing beside this fall?

If you are standing beside a young redwood this fall, measure its distance from structures and note its species before deciding whether it belongs there. Do not plant, move, or prune based only on its current height, because coast redwood growth and root spread make the mature site more important than the autumn appearance.

Take three measurements: the trunk diameter, the distance to the nearest foundation or driveway, and the distance to buried utility or septic infrastructure if you know where those are. Photograph the whole tree and its base. A close-up of reddish bark is useful, but the site photograph tells the truth.

Fall is a good time to investigate because leaves and surrounding plants are less distracting, and you can see the relationship between the tree and the structures. It is not permission to ignore local rules. Check the ordinance before planting or removing a large tree.

I learned this kind of caution from working ground that argues back. In Austin, I have hit limestone a few inches below the surface, leaned on a rock bar for two hours, and then found the real issue was not the hole. It was that the hole was in the wrong place.

Who should plant a coast redwood, and who should ignore it?

A coast redwood suits a landowner with a large open property, a long time horizon, suitable moisture, and no nearby infrastructure that its roots could damage. It does not suit a small suburban lot, a narrow side yard, a property with a nearby septic field, or anyone choosing a tree mainly because the young specimen fits beside the porch.

Plant one only when the landscape can absorb a very tall, fast-growing tree for decades. Nature Hills describes the biggest home landscape trees as multi-generational choices that need ample space and will dominate the landscape over time, a useful reality check in its large-tree guide.

Ignore the idea if your main goal is quick shade beside a building. The cost of getting it wrong includes lifted paving, damaged pipes, root conflicts, removal work, and years of pruning that never fixes the original site mistake.

You do not need a record tree to have a meaningful garden. A good tree in the right place beats a famous species in the wrong place every time.

Which large-tree choice is safer for a home garden?

For most home gardens, I would choose a tree that fits the available mature space rather than a coast redwood, because the redwood’s height, speed, and root system create more risk beside infrastructure. A coast redwood belongs on a large open property; a smaller, site-matched tree belongs near a house.

Option	Best fit	Honest downside
Coast redwood	Large open land far from structures	Can grow 2 to 6 feet per year early and develop roots that damage infrastructure
Another site-matched large tree	A property with measured room for its mature canopy and roots	It may provide less dramatic height or slower early growth
No tree in the constrained spot	A narrow bed beside a foundation, driveway, or septic system	You give up shade in that exact location, but avoid a future removal problem

This is where popular advice gets oversold. “Plant a big tree for legacy value” sounds generous until the roots meet a sewer line or the canopy reaches a roof. A legacy is only useful if the next owner inherits a healthy tree and a workable property.

Before choosing another species, check its mature dimensions, water needs, root behavior, and local performance in the plant database. Every tree has a trade-off. The trick is paying for the trade-off you actually chose.

What questions do gardeners ask about the tallest redwood tree?

Gardeners usually want two answers at once: the record holder’s name and whether a similar tree belongs in their own yard. Hyperion answers the first question, while site size, root spread, moisture, and local rules answer the second, especially for someone making a planting decision this fall.

How tall is the tallest redwood tree?

How tall is the tallest redwood tree?

The tallest redwood tree, Hyperion, is about 380 feet tall, or approximately 116 metres. It is a coast redwood in California and the tallest known living tree. Most homeowners should treat that number as a warning about the species’ potential, not as a target for a residential planting.

Is Hyperion a giant sequoia?

Is Hyperion a giant sequoia?

No, Hyperion is a coast redwood, Sequoia sempervirens, not a giant sequoia. Coast redwoods hold the height record, while giant sequoias are known for exceptional bulk. If a nursery label only says “redwood,” verify the scientific name in the plant database before choosing a planting site.

Can I plant a redwood next to my house?

Can I plant a redwood next to my house?

You should not plant a coast redwood next to your house because its large root system can damage foundations, pipes, sidewalks, and other infrastructure. Put it only in a broad open site with substantial separation from structures, and check local tree ordinances before planting.

How fast does a coast redwood grow?

How fast does a coast redwood grow?

A coast redwood can grow 2 to 6 feet per year during its first ten years in full sun and suitable conditions, then may add 3 to 10 feet annually later. That range varies with climate, moisture, soil, and competition, but it is fast enough to make a poor planting location expensive within a decade.

Why are redwoods so tall?

Why are redwoods so tall?

Redwoods are so tall because coastal California’s summer fog reduces water loss and provides extra moisture during the dry season, helping them move water to very high crowns. Their height still has a physical limit because lifting water against gravity becomes harder as the tree grows taller.

What should I do before planting a redwood?

What should I do before planting a redwood?

Before planting a redwood, measure its distance from the house, driveway, sidewalks, septic system, pipes, and other structures, then check local tree ordinances. Confirm the species, estimate its mature size, and reject the location if the available open ground cannot accommodate a very tall tree and large root system.

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