Known as the Princess Tree, Empress Tree, and Royal Empress Tree, Paulownia Trees are highly invasive and are destroying native ecosystems from Maine to Florida and Texas, as well as the Pacific Northwest. However, open almost any gardening magazine and you’ll find adds touting this tree as an “amazing, fast-growing, shade tree.”

It is this fast-growing nature that is causing so many problems for native ecosystems. Growing up to 15 feet in a single year, this invasive tree shades out and outcompetes native plant communities for resources such as water and nutrients.

It thrives in disturbed soils, is drought and pollution tolerant, and easily takes over riparian areas. Every spring when it blooms, I am dismayed at how many more of these trees have gained a foothold along the wooded stream as I drive through my neighborhood.

It can reproduce from seed or root sprouts, which grow very quickly. A single tree can produce up to 20 million seeds each year, which are easily dispersed by wind and water. Even though the light purple blooms are quite pretty, I have learned to hate the sight of them.

Sale of this plant is banned in Connecticut and it needs to be banned in all of the other states in which it has spread into natural areas. Continued sale of this plant is extremely irresponsible. If your local nursery is selling this tree, please inform them of how invasive and dangerous it is to our native ecosystems.

When Good Intentions Can Have Disastrous Consequences

I came across a website recently which has a great mission. Tree Your World is planting trees to sequester carbon dioxide in the hope of slowing global climate change. They are enlisting environmentally conscious affiliate organizations, corporations, schools, churches and individuals to join in their efforts to help nature help itself while profiting from the experience.

The problem is, they are planting vast plantations of Royal Empress Paulownia trees, which they describe as the world’s fastest growing tree. These plantations are creating a vast seedbank of this highly invasive tree, which will spread through native forests, riparian areas, and disturbed areas.

While they may be acting with the best of intentions, their actions are nonetheless very irresponsible.

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 52 reviews
by howaRD on Ecosystem Gardening
Incomplete info

Do complete research and do not publish what 'you' think. This tree only survives in direct sunlight, it will not grow with other trees because shade derives it of sunlight. That is why it grows along highways where no other trees are growing.USDA ARTICLE FROM WASHINGTON POST DR. PETER BECKJORD,USDA SCIENTIST (March 1990) cites the tree as a solution to deforestation in developing countries due to its fast growing nature. Can be used for building lumber and is valued in the Orient for its pinkish color. In 1990 the price was $12. per brd ft. Highly prized in Japan.

(source=Washington Post Magazine, Susan Tamulevich,March 25,1990)

by AVA on Ecosystem Gardening
THE USDA GATEKEEPERS most hated, no wonder the misinformation

It's amazing how much misinformation there is in this article... who ever wrote this article should not be so bias to such an amazing trees, which is medicinal and food in order countries, but clearly not in a the food old USA lying fake media...

MOST HATED OR MOST NEEDED? BEST IN C02 ABSORPTION; FOOD AND MEDICINES... hm, no wonder the USDA GATEEKEEPERS hate it, big pharma doesn't like competition.

by Bluebird on Ecosystem Gardening
Wicked tree!

Thank you for this information about the Pawlonia tree/Royal Empress tree! More people need to realize the invasiveness of this tree. Do not grow it! We bought a house on a small lot and the previous owner planted a Royal Empress in the tiny front yard. She loved the flowers, loved the shade, etc. and said it was her favorite tree. Our first year in the house: raking dinner plate sized leaves. The tree never flowered, outgrew it's space and the roots pushed out the nice brick landscaping wall. We had it cut down last Fall and now this year the shoots are popping up all over the place. People! If you want to plant a tree, plant a native tree indigenous to the part of the country you live in! Please! No fake news about this tree. It's real and despite it's pretty and fragrant flowers and welcome shade, beware!

by Vaughn K Buntain on Ecosystem Gardening
More fake news

For some reason this site enjoys disparaging Paulownia, and like so many things on the Internet, you are publishing misleading, incomplete information. The writer is either uninformed or has an axe to grind. There are 4 primary species of Paulownia: Tomentosa, Elongata, Fortunei and Shan Tong. Of those 4, Tomentosa is invasive and is forbidden to plant in certain parts of the US. The other 3 are fine species of Paulownia with excellent qualities. You would do yourselves and your readers a favor if you would separate the facts from fiction: Many readers are unable to distinguish between a Paulownia Princess Tree which is of the tomentasa speciees and a Paulownia Princess Tree which if of the elongata species. Please do your research and then write knowledgeably - harsh, misleading articles detract from some of the good things you have to say. The proper thing to do would be to inform your readers that a certain species of Paulownia should be avoided due to its tendency to be invasive, but it is unfair and inaccurate to lump all species in the same category.

by David Ewins on Ecosystem Gardening
A wonderful Genus

I am in the UK. and currently grow ALL 9 different Paulownias Species to maturity. Three are listed as UK ‘Champion Trees’ with. TROBI the UK tree register online- do look it up- however I have never had or seen a single self seeded tree. We do have warm dry weather in the south and east and cooler wetter in the north west but clearly our climate does not suit self seeding whilst the trees themselves grow well and fast. They can regenerate from the roots if the tree is cut down but not excessively. So I guess it can only be a problem in just a few areas or States. All varieties are very similar there is no significant difference between the more common tomentosa and elongate or indeed the others. Only ‘Fast Blue’ is significantly quicker and a larger tree. So your ‘hatred’ of this species i consider to be somewhat misplaced. Indeed at this time in early May there are no more beautiful trees.


Bath UK

by Michael on Ecosystem Gardening
Invasive Claims????

Paulownia Tomentosa was introduced into the USA in the mid-19th Century -- 170+ years ago. Ask yourself this question. If so terribly invasive?... Why hasn't Paulownia established itself (naturalized) almost everywhere?... like Dandelion plants? It has not. ***** Another insight relative this topic of invasive: During the last 40 years, Paulownia has been planted globally as a fast-growing timber asset. The North American Timber Industry and (importantly) its Lobbyist have worked very hard to influence and infiltrate the media and academic articles with these claims of Paulownia Invasion.

by Denis on Ecosystem Gardening

All the complaints about shallow roots can be resolved in the first 2 years of growth by watering heavy twice a week. Paulownia can have multiple tap roots.

We have a 16 year old tree near the center of a 40 acre property and no other paulownia.

by Mand on Ecosystem Gardening
Garbage Story

Did you get this "fake news" on the internet? Show us proof that these trees are "invasive"...I've yet to see any example in the US where these trees have taken over and wiped out other tree species. This article is merely opinion, with NO supporting facts. I have a neighbor who planted trees around his coral to provide some fast shade to his handicapped riders and his horses...beautiful trees in 10 years, and not invasive at massive spreading of seeds, or anything like that. Your garbage story also ignores clear benefits of such fast growing trees.

by Sherry A Buckowing on Ecosystem Gardening
Not completely accurate

It is only the Paulownia Tormentosa that is invasive. There are many other varieties of this tree that are not invasive. Do your research.

by Tonja on Ecosystem Gardening
Two Kinds of Paulownia Trees

There are two kinds of Paulownia trees:

1. Paulownia Tomentosa (the kind you "hate")

2. Paulownia Elongata (the "good" kind)

The second kind has a fuzzy leaf and is noninvasive. It filters the air we breathe better than any other plant I have read about. It does not have a deep root system and does not produce seedlings. In fact, I've read that it's sterile. I have one in my yard (I have no idea how it got there...other than a gift from a bird) which started growing two years ago and it's beautiful.

by Georgie Bailey on Ecosystem Gardening
Terrible tree

Neighbor has one tree and now I have it growing in my yard. Her yard is covered in sprouts. Nasty thing and I told her when she planted it what it would do. Grow all over the neighborhood. Her remark was "I won't be around that long" That was maybe 5 years ago and she's trying to get rid of the sprouts. Even the dropped leaves make a big mess. Any ideas anybody? I don't want to use roundup in my yard on sprouts. And believe me, once its cut down, the sprouts start. I read caustic soda (lye) will kill the sprouts but haven't tried it yet.

by Lynda fisher on Ecosystem Gardening
How do I kill all the sprouting in my yard.

I have cut this tree down. But it still is growing all over my yard. Please help, I need to stop this from growing all over my yard. I have tried different things and nothing seems to stop or kill it. I really need your help. Thank you in advance. Lynda

by Jim on Ecosystem Gardening
Sound like a hater to me

First of all, Most if not all of the Royal Empress trees for sale are not fertile. They are a very prestigious tree which can mature very quickly. If you are looking for a mature tree for your yard in a few years, this one is perfect. The wood from the tree is very valuable, and yes, it does absorb more co2 than any other tree, so it is in fact great for the environment.

by Kevin Jackson on Ecosystem Gardening
Just Heard of these Trees

I read that they absorb CO2 at up to 10 times the rate of other trees.

Could they save us from global warming?

by Robert Bernal on Ecosystem Gardening

Looking at the comments, I see there is more than just one type of this tree, and thus, this tree is perfectly fine. Can't wait to plant one in my yard - as long as it's the non invasive variety.

Perhaps, we should plant deserts with them (and somehow muster up the clean energy needed to obtain more water) in order to sequester some of the excess CO2 created from the conversion of literally mountains of fossil fuels.

I wonder if the wood rots quickly or if it would last for long enough until humanity figures out a better way to safely sequester excess carbon CO2 from the air, such as using unlimited solar, wind and batteries to "brute force" the conversion of excess CO2 into limestone.

by Horacio on Ecosystem Gardening
Amazing tree

I have six of these beautiful trees, they have helped cool my home. I don’t have much need for my ac because of them. They produce so much organic material that I deliver they are helping to enrich my desert like soil. I don’t rake the leaves that fall on the ground in one or two days they are dry enough that if they’re stepped on they dissolve or I use a pressure nozzle to break them apart. The seed pods do get very heavy and will cause some branches to break specially with a storm but so will other trees. I have also pruned some big branches but it’s a pleasure working with this tree. A thick branch is reduced to nothing so such ease. Mature branches are not hollow but weigh as if they were. Of the millions of seeds produced by my tree I have only had one seedling. I have five trees all clones from a tree I bought. They are root clones, when the roots are disturbed you’ll soon see a new tree trying to grow up from the area that was disrupted but they are so easily destroyed. I’m glad to hear that they have shallow roots because my tree is feet away from my septic system including the drain field and I haven’t had an issue with the system whatsoever. I love my trees they do remove a lot of carbon from the atmosphere.

by Elise Buckley on Ecosystem Gardening
Cut down; trees popping up ALL over my yard and neighbors!

I ignorantly ordered these trees from a garden center, so excited for their bloom and fast growth. The wood is soft and large branches were forever coming down in windy weather. Since the two large trees were near the property line, the leaves and branches kept messing up my neighbor's pristine lawn. Last year after a monster storm, I had the two large "Empress China" trees cut down. OH MY WORD!!! It is now like a plague! Seedlings are popping up by the dozens all over the yard AND the neighbor's yard as fast as we can pull them out. it is like whack-a-mole!!! Horrible. I don't know how to get rid of them! Help!!!

by Kathleen w. Weisiger on Ecosystem Gardening
Never caused a problem

We built a house on an acre of land in 1961. On the property was a beautiful Paulownia tree some 20 feet tall. We lived there for 22 years and never experienced any instance of unwanted reproduction. I recently returned there during an open house. The tree is still there, with no proliferation . I loved the huge heart shaped leaves, purple flowers, the fragrance and lovely grey bark. Three times Ive found paulownia in woods and tried to propagate them from seeds unsuccessfully.

by Kar on Ecosystem Gardening
Much needed

In San Antonio we need any tree that will survive desert conditions and provide shade in our extreme drought conditions. Living in an area that is consistently under water restrictions- this tree thrives and provides an environment and shade where we can enjoy the outdoors in our 105 degree temps. It also provides some much needed shade and relief to our garden that would be burnt and cooked from the sun if left to 24 hour sun access. In our area Cedar trees cause never ending problems with severe allergies (cedar fever etc) and taking over any vegetation. The only downfall I see in this tree is that the root system is shallow which does help in some areas of San Antonio where you only have 5-12 inches of soil on top of 10 ft of limestone.. however in a storm can cause larger and more mature trees to become uprooted. Just be sure to plant away from structures.

by RODNEY on Ecosystem Gardening

I have one in my back yard. It grew to a nice sized shade tree in a few years. It's beautiful, no roots on the ground. Never been a problem.

by S Wahl on Ecosystem Gardening
Stay away from thse trees.

I cut down three of these trees in my backyard. Between grass mowings, new shoots are coming out of the ground all along the root system 30 to 50 feet from the stump. The pieces I cut up for firewood are sprouting new shoots. The stump is sprouting new shoots. The roots grow near the surface and cutting the lawn is like riding over rumble strips. Hate those trees.

by S Wahl on Ecosystem Gardening
Stay away from thse trees.

I cut down three of these trees in my backyard. Between grass mowings, new shoots are coming out of the ground all along the root system 30 to 50 feet from the stump. The pieces I cut up for firewood are sprouting new shoots. The stump is sprouting new shoots. The roots grow near the surface and cutting the lawn is like riding over rumble strips. Hate those trees.

by Maureen on Ecosystem Gardening
Not all varieties of Paulownia are invasive

I agree with others who opine this article lacks accuracy re Paulownia tree. For example, the elongata variety are not invasive.

by John Tompkins on Ecosystem Gardening

To blame a tree that was brought here by Humans is just wrong. This tree wouldn't be a problem if people didn't take it from it's native land. Humans are the problem with Nature, Nature had it all under control. Funny, this was written by the most invasive species on the planet!

by Catherine Danielson on Ecosystem Gardening
One cultivar is invasive, others are not!

I am sure this review is well meant. However, it is VERY misleading. Paulownia tomentosa is invasive. Paulownia elongata is not. Unfortunately, P. tomentosa has given all cultivars of this tree a bad name. Paulownia elongata is sterile and will not spread seedlings. You just need to be sure you plant it 10 feet away from house foundations, driveways, and sidewalks. You can then enjoy this great, fast-growing trree. This kind of misinformation is the reason why Paulownia elongata is so difficult to find from reputable sellers. This site should know better than to spread incorrect information.

by rooyak on Ecosystem Gardening
paulownia wood

Because of softness Paulownia's wood, It's easy to work on. However, the presence of high amounts of silica in some of these trees may create patches on wood edges when cutting. However, with a variety of adhesives, these patches can be well repaired.

by Talbott Nursery on Ecosystem Gardening

Not true! NOT INVASIVE....Not sure where this author received his information, but totally incorrect! Have had them in our nursery for 10 years and have planted several with no ill affects, have one in my own yard! JT

by Eric Wilkens on Ecosystem Gardening
It's not Kudzu!

Well I live in Tennessee and Have had 2 growing on My property for 14-15 Years now. I have NOT noticed any off shoots growing any Where else on My property. The only FACT I see That was true ( to My knowledge ) is The roots. Yes They grow at ground level. This is The reason I was researching This tree. Only has given small amount of blooms also Which I regret. We purchased This from a birds & blooms magazine.

by George on Ecosystem Gardening
Hollow trunks also make these trees dangerous!

Thank you for warning people about the terrible Empress tree. I live in Colorado and my neighbor planted one of these trees before I moved into this house. It is a disaster. It is very near to the property line and spreads through roots and seeds. During storms, all its weedy hollow trunks sway dangerously and rub and hit against each other. At the first sign of frost, all the huge leaves drop, creating a terrible mess. I have to keep killing its offspring in our yard and gardens. This tree is life-threatening in any area with winds or storms, i.e. everywhere. If you insist on planting it, you can expect an eventual lawsuit from your neighbors!

by Sta on Ecosystem Gardening
Author is wrong

The "ecosystem gardener" who wrote this is quite ignorant and should not be writing anything for distribution. Do not believe him; do your own research to decide for yourself. Paulownia Elongata is a beautiful, controllable species with many great benefits.

by Jay Q on Ecosystem Gardening
Use paulownia to make music

Paulownia used to make long zithers like Gayageum, Guzheng, and kotos will elevate the local reputation of this wood. If you want them gone then tell them it is time to face the music. Find the right luthier and enjoy.

by Caleb Kotewa on Ecosystem Gardening
Know your species

Ignorance is misleading. Paulownia Tomentosa is INVASIVE, and yes was the first breed of Royal Empress tree in the country. The seeds where used for packing material and was shipped via train track all over the country spreading itself along the way. Since then, paulownia has been put through vigorous breeding programs around the world to alter its traits. Now there is Paulownia Elongata, which is not invasive because the seedlings growth period is almost impossible for nature to nurture. Other breeds have sterile seeds, can withstand negative temperatures and have been tailored to different ecosystem requirements. 9501 is a great breed for Midwest. PLEASE UNDERSTAND A TOPIC BEFORE YOU DISSEMINATE INFORMATION!!! Paulownia is the future of the timber industry because it is renewable and sustainable.

by Carlotta S on Ecosystem Gardening
I'm afraid

My neighbor(whom I love) wants to plant one very near the property line. I already bust my a$$ pulling weeds and I sure as heck don't want little runners popping up everywhere. Not only that, I'm on the ARB & I'm pretty sure the other members are just going to approve because of who it is. Am I let reacting? There's contradictory info all over the freaking internet.

by Chris on Ecosystem Gardening
Totally Dissagree

Your stated concerns are illfounded at best. The benefits and potential of these trees far outway any perceived negatives. Proper management is the key to any species. These trees can be beautiful! Livestock love to eat the leaves and thrive on them to my understanding.

by cheryl on Ecosystem Gardening
How to kill root system

I had a 2 story paulownia removed stump and all Nov 2017. Now spring is here and there are suckers and what I am finding is an extensive root system that maybe under foundation of house. I am wondering how to rid these roots effectively safely quickly Anybody know?

by Mick on Ecosystem Gardening
Varieties vary

"Also, of the two main varieties, Paulownia Elongata is a noninvasive variety, while Paulownia Tomentosa is invasive."

This fact by Slik needs to be emphasised I think.

by Cheryl Brannon on Ecosystem Gardening

Does anyone know if this tree is harmful for goats?

by Chris on Ecosystem Gardening
Not accurate

The dragon/ empress tree is only invasive in feilds as our native trees kill it off due to its high sunlight requiremnts. It provides both good wood as well as nectar for honey bees. It is a pioneer plant the same way that a pine tree is. If you plant a tree in a open feild odds are you will have more pop up along with pines. Not really a problem. I wish the author had his facts straight or maybe he just doesn't understand the true nature of this plant

by Wahoo on Ecosystem Gardening

These trees only grow in zone 5-8 so right off the bat this article gives false information! The fact there is a sterile variety even further destroys the narrative of false information about a useful tree that deserves a better investigation of its uses!

by Jay on Ecosystem Gardening
Sterile version available

If concerned about propagation, there is a sterile version of the tree available called Paulownia Elongata.

by Joy Reddy on Ecosystem Gardening
Paulownia tomentosa

The Paulownia seems to be as invasive as the Norway Maple and the Kudzu vine. Reference "Bringing Nature Home: How you can sustain wildlife with native plants" by Douglas Tallamy and Rick Darke.

Birds and insects cannot live on these imported invasive trees since their digestive system cannot digest the sap which is toxic to them.. Bees are already being decimated by toxic sprays on plants. Paulownia trees will just add to the ecological destruction of diversity.

by John on Ecosystem Gardening

after 3 years and 6 acres of Eucalyptus, I am going for Paulownia Elongata on my next 4 to 10 acres in Uganda.

by Curt Zimmermann on Ecosystem Gardening
I don't see any, but I'd like to.

I live in Florida and there are planted pines. Everywhere. A pine tree is good wood to work with aside from construction use. Now, the Paulownia tree is lightweight (close to Balsa weight), straight grained and has many more uses from building boats and surfboards to building beautiful furniture. I only wish there were more of it around! I have never seen a single tree in the wild and I wish I could because I would gladly take it off any ones land. That stuff is 7-10 bucks a board foot. I say we get rid of these ugly pine forest and plant something that will be more useful.

by Margie Craig on Ecosystem Gardening
Don’t plant these

If you live near others- don’t plant these - our side neighbor had 2 side by side at our fence line- an off shoot free behind our home at fence line. Original planter cut his down & chopped the massive root clump that was pushing the fence up - hundreds of pop ups are all over my yard & another 2 beighbor’s Yards - do 3 other homeowners impacted by the choice of 1....???

by Marianne Griffin on Ecosystem Gardening

I had three,cut down 2 now have one. They grow like weeds. But are beautiful.

by Nirmal Joshee on Ecosystem Gardening
Paulownia Most Hated...

I totally agree with the knowledge based views of Gerald Klingaman, retired Extension Horticulturist - Ornamentals. While analyzing plants, we have to leave aside activism. In almoat 180 years since its introduction to the US, after releasing billions and billions of seeds, how many trees do we have? 10,000, 50,000, or 100,000 in wild. And Paulownia fossils have been reported from Oregon and Washington.Let us enjoy monofloral honey of Paulownia (mind you our bees are not native either), timber, leaves for fodder, and beautiful flowers.

Happy growing

Nirmal Joshee

by Slik on Ecosystem Gardening
*Some are invasive, not all

There are some varieties that are invasive, so many online retailers clone their seeds from sterile tissue cultures. Also, of the two main varieties, Paulownia Elongata is a noninvasive variety, while Paulownia Tomentosa is invasive. Also the root system is largely localized, so unlike wisteria, it wouldn’t be a PITA to remove if you needed to.

by JOHANY NOESI on Ecosystem Gardening

You sound crazy to me if you don't like these amazing trees. I absolutely love these trees and will plant my whole 5 acres of land with it so suck on that!

by DucHien Vu on Ecosystem Gardening
It's not as invasive as you think

"In many parts of the southeastern states, this Chinese native has escaped cultivation and is listed as an invasive species. Its place in the ecosystem is as a pioneer species, so it favors highly disturbed sites such as strip mines and roadsides, but occasionally it will find its way to the woodsy margins of rivers and streams. Because of its need for full sun, Paulownia is a poor competitor with oaks, hickories, pines and other trees of a mature forest so it does not spread into established forests."

Gerald Klingaman, retired

Extension Horticulturist - Ornamentals

Extension News - November 6, 2009

The University of Arkansas Division of Agriculture

I grew up with these trees, sure you will see a few unwanted one here and there but I've never seen it taken over any area at all.

by Michael Ritchey on Ecosystem Gardening
Cite facts

I see a lot of emotion in this article, but no citations of any study that shows that the spread of Paulownia harms the environment. (And BTW, even if you had that, I wouldn't believe you unless you tried to be objective and cited some other studies that maybe point the other direction, and then explain why they offer a weaker argument.)

Here in Utah we have borers that are killing whole mountainsides full of conifers, and it would be nice to have something to replace them with. Paulownia is grown for lumber. If you think it's bad for ecosystems, then cite some credible sources. Without citations, you sound like one more rabid city person with lots of emotion, a few talking points from liberal mainstream media, no facts, and no practical experience trying to tell us country folks what to do.

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