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  • Writer's pictureChristian Aguilar

Updated: Jun 25, 2023

Without a doubt, sacred datura is my favorite flower in the Sonoran Desert, actually, it was because of this plant that I decided to create my webpage to talk about it and other wonders. A very smart plant, despite the fact that it looks like a fragile herb, it can grow very large,

Sacred datura in our frontyard with a totem pole cactus in the background (Lophocereus schottii var. monstrosus)

almost like a bush, it dies in the winter, but its root remains protected underground and then it is reborn in the spring. No irrigation is required, since it is adapted to survived with the rainy seasons, it has the power to spread its seeds all around it, and if you leave it, it can fill the entire patio! It is worth mentioning that in the Sonoran Desert we have another species of sacred datura besides Datura wrightii: Datura discolor, which has a smaller flower with a lilac color in the center of the flower and on the edges of the petals. Some botanists suspect that Datura wrightii could originally come from southern Mexico and Latin America with the Spanish conquerors and that it became naturalized in our region since those years, being the same as Datura inoxia, but there is still not enough technology to prove it¹.


Something that really catches my attention when sacred datura is mentioned is all that

Sacred datura in the backyard of our house. In a single night we have counted up to 80 open flowers!

mysticism and fear that surrounds it. We humans are full of stories, legends, beliefs, etc., and without realizing it we affect other species with all this. In Mexico we have a saying: “Beware! Don’t let them give you datura” indicating that you shouldn't ingest datura tea coming from “your suitor” because you will just lose it and fall in love with this person. I might have felt in this trap because I am in love of datura, but I need to be super clear and serious with all these sayings, all the daturas in the world are very poisonous. But to be realistic, there are a ton of poisonous plants that surround us even inside our homes, such as Monstera deliciosa and lilies, or outdoors like Nerium oleander, which contain high levels of toxicity and are so dangerous if eaten. Sacred datura is just one more plant on the list of poisonous plants in the world. So if you have this plant in your garden, just don't eat it, or smoke it, or don’t do other nonsense with it, all you have to do is grab a chair, sit back and start admiring it.


We have been so afraid of this plant for centuries, that we have completely eliminated it from our patios, parks, etc. This plant is super important for nocturnal pollinators, such as moths

and bats. It serves as food for some of the largest flying insects in the Sonoran Desert, the sphinx moths. In fact, the levels of poison that daturas contain, help the caterpillars that feed on their leaves to acquire an unpleasant taste and this protects them from predators . So as an extra benefit of having daturas in your garden, you get to be surprised by the number of animals that come to their flowers, I was amazed to find those large moths asleep inside the flowers. If you would like to grow this plant in your garden, look for a datura when you go for a hike in the wild, look for the fruit, which is a dry ball with many spikes that contains the seeds (I hope you bring gloves because otherwise it will hurt), take it home and then you open it very carefully and you will find many seeds, spread them in your garden and they will come out alone in the spring. Remember, sit tight and enjoy!

Another sacred datura that came out voluntarily in our backyard.

Type: Perennial herb, dies back every winter and comes back in the spring.

Size: Can reach a height of 3ft and 6ft wide.

Water use: They can survive with rainy seasons, no irrigation needed.

Flower season: From May until the beginning of winter.

Flowers: White trumpet shaped flowers, 5 inches long and 4 inches wide, smooth and sweet aroma. They open up at dawn and die the next day with the heat of the day.

Food for: Night time pollinators love datura, particularly the sphinx moths, which use the whole plant as a source of food for all the stages of their life. I have seen these moths sleeping inside the flowers. Bees also take advantage of these flowers very early in the morning before the flowers die.

Where to plant: Direct sun or in partial shade.

Distribution: It can be found everywhere in the Sonoran Desert. Sadly, it is considered an obnoxious weed in some places, and is pulled away, people tend to be scare of it because it is poisonous. In the wild, can be found on creeks and sandy soils.

Ancestral use: Endless ancestral uses of different indigenous groups throughout the American continent. It had a sacred power and was used as a psychoactive in smaller amounts. Consuming it in large quantities can be fatal and its best to said again: it should not be consumed by any human being or pet. There is a lot of information about this plant and its history, and we have to appreciate its beauty in a respectful way.

Landscape design: Can be use as an accent plant, combined with annuals that tolerates the cold season. Something good (or bad for some) is that if you let it, datura can take over your whole yard, the seeds spread so easily and you can have a patio full of white blooms and sphinx moths flying around at night. Its great to have datura in an entrance of a patio, or around a walkable path so people can appreciate their beauty and aroma!


Sources:

Books:

  • ¹Baja California Plant Field Guide 3rd Edition, Norman C. Roberts and J. Rebman.

  • Native Plants for Southwestern Landscapes by Judy Mielke.

Web:

  • https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=44337

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  • Writer's pictureChristian Aguilar

Palo Blanco tree at the Desert Botanical Garden of Phoenix

Another Palo Blanco tree (white stick)!!! But this tree is exclusive to the Baja California Peninsula, where I am from. Sometimes I imagine that the cities of Baja California Sur such as La Paz, Los Cabos and Constitución are full of Palo Blancos that provide shade to the streets and pedestrians, being such a beautiful tree that does not require care or irrigation. and that is emblematic of the region. But it is also beautiful to go out in the wild and come across a stream full of Palo Blancos, as happens on the Ciudad Constitución - Tembabichi road, where I have witnessed Palo Blanco Bosques.

It is a perennial tree, from the family of Leguminosae (cousin of the mesquite and other trees that produce pods), it can grow up to 30ft tall and has some characteristics that make it very special: the first and most important is the color from its silver-white trunk, which stands out in the distance, the second is its flower that gives off a pleasant smell, and the third is its foliage, the color of its leaves is grayish-green. There is another notable feature, its trunk tends to grow in a "Y" shape, which has made this tree an important species for life in the countryside, where these trunks were traditionally used as corner walls for huts.


Two Palo Blanco trees and some cardons at La Sierra La Giganta, near to Loreto, Baja California Sur.

Legend has it that the Bay of La Paz in Baja California Sur, was full of these beautiful trees but a local saddler removed them all, since the bark of the trunk was and still is used to dye leather. Although considered endemic to Baja California, Palo Blanco tree can be found in small areas in Sonora, especially near San Carlos and Guaymas. In my own experience, I have successfully propagated three of these trees here in Tucson, they are already two years old and almost my size, 1.50 meters tall, despite the fact that they grow fast, they still do not have a white trunk, they are green and have not yet flowered. It was very easy to grow them from seed and I hope people are more encouraged to grow this type of native trees that provide many benefits to the ecosystem and to us in our cities, reduce the heat island, provide habitat for birds, provide food for insects, gives beauty and sense of belonging!

Palo Blanco Bosque o the road from Ciudad Constitucion to Tembabichi, Baja California Sur.

Type: Perennial tree, evergreen in areas where temperatures do not drop below 25°F.

Size: Up to 30ft tall.

Water use: Very little.

Flower season: March to May.

Flowers: Cream-colored puffed balls with a pleasant fragrance.

Food for: Pollinators!

Where to plant: Direct sun.

Distribution: Almost endemic to the Baja California Peninsula, some specimens can be found in the central west of Sonora, but there are many in the islands of the Gulf of California, and in streams from Santa Rosalia to the south of the peninsula.

Ancestral use: The missionaries of Baja California used the ink from the bark to dye leather, an activity that is still present in the ranches.

Landscape design: This tree is ideal for shade, it is tall, has a beautiful bark and fragrant flowers. If you want to imitate it in its wild state, this tree can be combined with columnar cacti such as sweet pitaya (stenocereus thurberi), cardón (pachycereus pringlei), cardón barbón

(Pachycereus pecten-aboriginum), among others. It can also be accompanied with plants that do not grow very tall so that the trunk of the tree is appreciated, for example annual flowers such as lupines (Lupinus succulentus) and bluebells (Phacelia parryi), to create a pollinator garden. It is ideal to plant it in a place with a dark background so that the color of its trunk stands out and in a place where it is protected from frost.


Sources:

Books:

  • Baja California Plant Field Guide 3rd Edition, Norman C. Roberts and J. Rebman.

  • Native Plants for Southwestern Landscapes by Judy Mielke.



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  • Writer's pictureChristian Aguilar

This time we will talk about a such beautiful tree, ideal for small patios and that will attract everyone's attention with its unique details that make it stand out among the other trees.

Palo Blanco at the Universidad of Arizona in Tucson.

The bad news is that this tree is only found in the state of Sonora (in the wild), but the good news is that it is so well adapted to the Sonoran Desert (since it has evolved for thousands of years in this habitat) that if we propagate it to other places within this desert, it adapts very well, and lucky for us, in Tucson, several nurseries sell this beauty.

This is a small tree, can reach up to 20ft tall. Its leaves are tiny, they fall off in spring and summer, leaving the tree with only very thin branches. It blooms in spring, bearing beautiful feathery, fluffy, cream-colored flowers, followed by pods.


But the most attractive thing about this tree is its bark, similar to the torote (Bursera microphylla) that abounds in North and South Baja California, the “flaky effect” happens with the Palo Blanco (don’t ask me why), its trunk becomes flaky, releasing pieces that look like paper.

Its unique and interesting bark.

In its natural habitat it can be found on rocky slopes and canyons in the south of Sonora. This tree is beautiful in every way, visually it inspires elegance with its wispy appearance (similar to the weeping willow), its flowers attract all kinds of pollinators, its trunk stands out among all the plants and it is for these characteristics that it is recommended to be used as accent plant, either in entrances to small patios or have a couple together. It is a tree that offers shade, is fast growing and does not require much water.


Just be aware that it doesn't do well in cold weather, so if you live in northern Sonora, BC, or Arizona, be sure to find a spot in your yard where it's protected from frost.


Desert Botanical Gardens in Phoenix, Arizona.

Type: Perennial tree, it sheds its leaves in spring and summer, but recovers them later.

Size: It reaches up to 20ft high and 10ft wide or a little more.

Water use: It needs very little water.

Flower season: In Spring and Summer.

Flowers: Cream-colored, spongy and feathery texture, about 2 in wide.

Food for: Larval host for marine blue butterfly (Leptotes marina), various owlet moths (family Noctuidae), and geometer moths (family Geometridae). The flowers attract butterflies and many other insects that feed on nectar.

Where to plant: Direct sun.

Distribution: It is found in its natural habitat in the State of Sonora on rocky slopes and canyons. It's also used a lot ornamentally here in Arizona.

Ancestral use: The Seris used the wood of this tree as a building material.

Landscape design: It is a perfect accent plant, which means you only have one or two or three, close together and they draw attention when you enter a patio. They can be placed in the center of a patio, or near a wall to bring out their color and unique bark. It is also called a specimen plant, indicating that it is a special plant and that it can be placed in an area where it will serve as a focal point. Although it does provide shade, it is not ideal to use this tree for that purpose, since there are other trees that offer more shade because they are more leafy, such as the feather tree (Lysiloma watsonii) or larger trees such as mesquite and ironwood.

Cañon del Nacapule in San Carlos, Sonora

Sources:

Books:

  • Phillips, S.J. and Comus, P.W. (2000). A Natural History of the Sonoran Desert. Tucson: Arizona-Sonora Desert Museum Press. Print.

  • Native Plants for Southwestern Landscapes by Judy Mielke.

Web:

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