What Are Redwood Trees? Types, Size, Care, and Garden Fit

What are redwood trees?

Redwood trees are very large conifers with soft, feathery foliage, fast growth, and a strong upright shape. The name usually means coast redwood, which can reach 60 to 100 feet and develop a broad, flaring base, though dawn redwood is a separate deciduous species with a pyramidal form. Garden.org explains the mature size and root plate of the tree commonly sold as redwood.

They are conifers, so they produce cones rather than flowers. Coast redwood keeps its needle-like foliage year-round in suitable climates. Dawn redwood drops its soft foliage in fall, which gives it a little seasonal drama but also means you will rake more than you would under an evergreen.

The big distinction is scale. A redwood is not a polite little backyard evergreen that stays where you put it. It is a living structure, and its roots, trunk flare, shade, and water needs eventually take over a large part of the garden.

The Redwood Guide describes dawn redwood as a rapidly growing, deciduous conifer with feathery foliage and a pyramidal form. That is the tree many gardeners mean if they want redwood character on a site that cannot support a coast redwood's eventual bulk.

What is the difference between a coast redwood and a dawn redwood?

Coast redwood is the giant evergreen species most people picture, while dawn redwood is a deciduous conifer from China with a narrower pyramidal habit. Coast redwood needs exceptional horizontal and vertical space; dawn redwood still becomes a substantial tree, but its fall color and winter dormancy make it a different garden plant, not a smaller version of the same tree.

Redwood type	What it looks like	Best garden situation	Honest downside
Coast redwood	Evergreen, tall, broad at the base	Very large, mild, moist site	Can outgrow a home landscape and compete heavily for water
Dawn redwood	Deciduous, feathery, pyramidal	Large site wanting fall color and seasonal change	Drops foliage and still needs substantial room and regular water

Coast redwood is the one I would treat with the most suspicion in a residential yard. The trunk base expands dramatically, and the root plate spreads widely rather than politely diving straight down. Limbing up does not turn it into a comfortable patio tree.

Dawn redwood has a stronger seasonal rhythm. Its needles turn warm brown before falling, and its bare winter framework can be beautiful. The trade-off is cleanup, plus the fact that rapid growth does not erase the need for a large planting site.

Read the nursery tag carefully. “Redwood” without a species name is not enough information to make a sound placement decision, especially in Austin, where a plant may face alkaline clay, hot dry wind, and weeks above 100 degrees Fahrenheit.

How big do redwood trees get?

A coast redwood can grow 60 to 100 feet tall and develop a broad, flaring trunk base with a wide root plate. Dawn redwood also becomes a large landscape tree, with rapid growth and a pyramidal outline. The practical answer is simple: plant a redwood only where its mature height, shade, trunk flare, and root spread can remain comfortable for decades.

Measure from the planting spot to the house, driveway, drains, property boundary, overhead lines, and nearby trees. Do it now, while the tree is still small. Garden.org specifically recommends checking those distances before a young redwood roots into place.

Everyone says, “It is only a little tree.” In practice, five years passes quickly, and moving a newly planted tree is very different from moving one that has established a broad root system. A small coast redwood can become a very expensive mistake with a trunk.

Do not plant one beneath utility lines. Do not tuck one beside a foundation because the nursery pot looked manageable. The tree may not crack a foundation by magic, but the combination of root competition, trunk expansion, dense shade, and difficult access is enough reason to give it generous space.

For a small Austin lot, my position is firm: choose a different focal tree. A redwood belongs on a large property, a park-like garden, or a site with a clear long-term plan, not in the narrow strip between a fence and a bedroom wall.

Can redwood trees grow in Austin, Texas?

Redwood trees can survive only with careful site selection and dependable irrigation in Austin, but I would not call them an easy or naturally fitted choice here. Central Texas brings alkaline clay, limestone, intense summer heat, water restrictions, and long dry stretches, while redwoods need consistently moist soil and are not drought-tolerant. The Redwood Guide recommends deep, regular watering for the first two to three years and weekly watering during dry spells after establishment.

Austin soil can hold water like a bowl and then bake like a brick. That is not the same as the cool, reliably moist conditions redwoods prefer. Improve drainage without letting the root ball dry, and you are already signing up for a more attentive irrigation routine than most low-water Central Texas trees require.

The February 2021 freeze is still the measuring stick here. A redwood that looks vigorous through one mild winter can face a very different test during a severe freeze, and a young tree has less stored resilience than an established specimen. I would not promise evergreen performance for coast redwood in every Austin exposure.

If you are standing in the garden this fall with a redwood in a pot, check the site before digging. Watch where water sits after rain. Look for caliche, roots, drainage lines, and the nearest hose connection. The pretty spot by the patio is often the wrong spot because it is too close to everything.

In Miami, I learned plants in sandy fill that drained before I finished watering. Austin taught me the opposite lesson: clay can hold water, but that does not mean a thirsty tree has a dependable supply in August. I have killed plants by confusing wet soil with available water, and I do not want that lesson repeated with a 70-foot tree.

Where should you plant a redwood tree?

Plant a redwood in a spacious location with well-drained soil, consistent moisture, and generous clearance from foundations, drains, utilities, boundaries, overhead lines, and other trees. The site must accommodate a broad trunk base, wide root plate, heavy shade, and long-term irrigation. If you cannot draw that future footprint on paper, the site is too small.

Use a tape measure. Mark the proposed trunk with a stake, then sketch the mature canopy and root area on the ground. Do not rely on the current nursery height. That is how a tree ends up jammed against a fence, with roots competing against every shrub nearby.

Avoid low spots that stay saturated. Redwoods need moisture, but poorly drained conditions can encourage root rot. The Redwood Guide emphasizes regular deep watering while the site guidance also warns gardeners to monitor poorly drained spots for root-rot problems.

Give the tree room from other trees, too. Two redwoods planted close together may look charming for a few years, then become a crowded argument over light, water, and root space. Moving them after ten days may be manageable; moving them after five years may require machinery and a contractor.

A redwood is not a foundation planting. It is the foundation of the whole future garden. That distinction costs you some lawn now, but it saves you removal, broken irrigation, and years of pruning later.

How do you care for a newly planted redwood tree?

Water a newly planted redwood deeply and regularly for the first two to three years, soaking the root ball itself rather than merely wetting the surrounding soil. After establishment, provide weekly watering during dry spells because redwoods are not drought-tolerant. Keep the soil moist but well-drained, and do not fertilize during the first year. Plant Detectives gives the same first two to three year watering guidance.

In fall, inspect the root ball before winter settles in. If the soil is dry several inches down, water slowly enough that moisture reaches the entire root ball. A quick splash on the surface is not deep irrigation. It is theater, and the tree knows it.

Apply 2 to 4 inches of mulch around the tree. Long-lasting acidic redwood bark is a sensible choice because mulch helps retain moisture and can gradually acidify the soil for acid-loving companions. Keep mulch several inches away from the trunk bark so moisture does not sit against the stem and encourage rot.

Remove nursery ties, labels, and staking after the first season. A young tree needs to develop trunk movement and strength, not live strapped upright forever. The trade-off is that you must inspect it after storms, but that is a better job than leaving ties to girdle the growing trunk.

After the first year, use a balanced slow-release fertilizer in early spring only if growth looks weak. Fertilizer is not a rescue plan for poor drainage, dry roots, or a bad planting site. It costs money and can push soft growth when the real problem is water management.

Should you prune a redwood tree?

Prune a redwood only in winter to remove dead or damaged limbs, and never cut the central leader. The central leader controls the tree's main upright structure, so removing it can ruin the natural form and create a weak replacement stem. Young trees need room and observation more than aggressive shaping.

Do not limb up a coast redwood to force a sitting area beneath it. The trunk base still expands, the roots still compete, and the shade still changes the soil and planting conditions. Garden.org notes that limbing up does not make a coast redwood comfortable for a small garden.

Use clean, sharp tools and make selective cuts rather than shaving the canopy into a shape it does not want. The trade-off is a less formal silhouette, but redwoods are architectural because of their natural form. Fighting that form wastes time and removes the reason you planted the tree.

Watch for thick sprouts crowding the base of an established tree. They may signal stress or a response to injury, so do not treat every sprout as a simple cosmetic nuisance. If the tree is large or the limbs are overhead, hire a qualified arborist rather than standing underneath with a saw and optimism.

What plants grow under redwood trees?

Under a redwood, choose shade-tolerant native perennials and shrubs that can handle root competition and acidic conditions, such as vine maple, Pacific rhododendron, flowering currant, thimbleberry, salmonberry, ferns, and hostas. Plant drifts of at least five individuals and repeat the groupings. Sun-loving roses and daylilies usually become leggy or droopy close to a redwood. Gardening Under the Redwoods explains why dense shade, acidic soil, and root competition defeat those sun-loving flowers.

Every named companion has a cost. Vine maple needs room and a suitable climate. Pacific rhododendron wants acidic conditions and can sulk in alkaline soil. Flowering currant has a seasonal display rather than year-round polish. Thimbleberry and salmonberry can spread. Ferns need moisture. Hostas look lush but may attract deer and do not solve the underlying water demand.

Do not pile a collection of unrelated plants under the trunk. Repetition looks calmer and gives each plant a better chance to compete visually with the tree's enormous scale. Five ferns repeated three times will read as intentional; one of everything can look like a plant sale exploded.

Mulch helps conserve moisture and slowly shifts the soil toward more acidic conditions, but it does not erase Austin's alkaline clay or create shade tolerance in a sun-loving plant. The right plant still needs the right amount of water and enough soil to establish.

You can browse species before you shop in our plant database. If the space is large and you are unsure how the tree, path, and understory will fit, get a concept for your yard before you spend money on plants that will be moved later.

Who should plant a redwood tree, and who should skip it?

A redwood suits a homeowner with a large property, dependable irrigation, well-drained soil, and a long-term plan for a major shade tree. Skip it if your lot is small, your water supply is restricted, the planting area is near a foundation or utility, or you want a low-maintenance tree for hot, dry Austin conditions. The wrong site will cost years of care and eventual removal.

Choose a redwood if you genuinely want a monumental tree and can give it decades of room. A large rural lot, institutional garden, or open estate may make sense. The tree can anchor the landscape beautifully, but the garden must be designed around its future size, not decorated around its current pot.

Skip it if you are looking for quick privacy beside a fence. Fast growth sounds like a bargain until the roots, shade, leaf drop, and irrigation demand arrive together. A screen made from several smaller, climate-appropriate plants may take more planning but creates fewer structural problems.

Ask yourself one real question: can this site receive deep irrigation every week during a dry spell without fighting your water restrictions? If the answer is no, I would choose another tree. Pretty is not enough, and I say that as someone who has bought plants because the foliage made my heart sing.

My own choice in an Austin garden would be conservative. I would admire a redwood on the right property, then plant a better-adapted focal tree on a typical residential lot. A tree should bless the garden, not become the garden's largest maintenance bill.

What are the most common questions about redwood trees?

Redwood trees are impressive but demanding landscape plants, so the useful questions are about species, mature size, water, placement, pruning, and companion planting. The answers below give the short version for a homeowner making a fall planting decision, with the central warning repeated plainly: identify the species and plan for the mature tree before you dig.

What are redwood trees?

Redwood trees are very large conifers known for fast growth, feathery foliage, and dramatic scale. Coast redwood is usually evergreen and can reach 60 to 100 feet, while dawn redwood is deciduous and pyramidal. Both need substantial room, regular moisture, and a planting site away from foundations, utilities, drains, and crowded tree canopies.

How big do redwood trees get?

Coast redwood trees can reach 60 to 100 feet and develop a broad, flaring base with a wide root plate. Dawn redwoods also become large trees, even though their form is narrower and their foliage drops in fall. Measure for mature height, trunk flare, shade, and roots before planting a young nursery specimen.

Can redwood trees grow in Austin, Texas?

Redwood trees can grow in Austin only with careful placement, good drainage, and dependable irrigation. Austin's alkaline clay, extreme summer heat, water restrictions, and long dry periods make them demanding because redwoods are not drought-tolerant. I would reserve one for a large site where weekly watering during dry spells is realistic.

How often should you water a newly planted redwood tree?

Water a newly planted redwood tree deeply and regularly for the first two to three years, soaking the root ball itself. After that, provide weekly watering during dry spells. Adjust for rainfall and drainage, because constantly saturated soil can contribute to root-rot problems while shallow surface watering leaves the root ball dry.

Can you plant flowers under a redwood tree?

You can plant flowers under a redwood tree, but choose shade-tolerant species rather than sun-loving roses and daylilies. Dense shade, acidic soil, and intense root competition often make those sunny garden staples leggy or droopy. Ferns, hostas, and suitable native perennials have a better chance, though each still needs enough moisture.

Should you prune a redwood tree?

Prune a redwood tree only in winter to remove dead or damaged limbs, and never cut the central leader. Do not aggressively limb up a coast redwood to create a seating area, because pruning does not reduce its broad root plate or mature trunk flare. Use an arborist for large or overhead work.

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