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Mexican Flowering Trees and Plants

Helen Fowler O’Gorman (1904-1984) grew up in Wisconsin but graduated in fine arts and architecture from the University of Washington.  She began her career as sculptor and went to Mexico in 1940 to continue her studies with painter Diego Rivera.  He encouraged her to concentrate on painting and over the next two decades, she developed a passion for illustrating the native and garden plants of her adopted country, leading to the publication of “Mexican Flowering Trees and Plants” in 1961.

At the time of their meeting, Rivera was married to painter Frida Kahlo.  Together, they lived in a house designed by the Irish-Mexican architect (and painter) Juan O’Gorman, Helen’s future husband.  Together, the O’Gormans designed and built Casa Cueva, their home and landscape that partially encompassed a natural cave.

Helen O’Gorman’s book demonstrates not only her skill as a painter, but in the text her knowledge of Mexican botany and horticulture.  She was particularly interested in the gardening heritage of the Aztecs and other pre-Hispanic peoples.  “Innumerable plants were sacred to the Aztecs and certain flowers were set aside by the priests for religious rituals.”

While she includes the ethnobotanical uses of plants for food, medicines, and dyes, she emphasizes the passion these civilizations had to grow flowers for ornamental purposes and as perfumes.  The latter use was considered especially important for reducing fatigue or providing a mild stimulant.  This practice was picked up by the conquering Spanish, a fact O’Gorman discovered in a surviving administration document on the “treatment of the weary office holder of the 16th Century.”

The author regards this book as an attempt to introduce “the most noticeable flowering plants” to her readers.  Most are natives, while a few are popular introductions.  Each entry includes some botanically distinguishing features, but this is less a field guide and more an invitation to share the appreciation and various uses of these plants across the breadth of Mexico.

For example, most species of cosmos are native to Mexico.  Referring to our common garden cosmos (Cosmos bipinnatus), she describes: “In the state of Michoacán one sees a breathtaking sight: solid pink fields of them, often bordered with the yellow of wild mustard.”  She also highlights how a decoction of another species found in North American gardens, C. sulphureus, “is employed to fight the effects of the sting of the scorpion” with small cup given the sting victim every hour.

 

Excerpted from the Winter 2021 issue of the Arboretum Bulletin

 

UW cherry tree blossoms

I would like to know when most of the beautiful flowering trees will be in bloom on the University of Washington campus this spring? I would like to bring a tour group to see them.

Typical bloom time for the Yoshino cherry trees (Prunus x yedoensis) in the Quad is mid- to late-March, but timing is weather-dependent. You can check the UW Cherry Cam, which they update each spring: https://www.washington.edu/video/campus-webcams/

This article shows the stages of flower development and provides additional detail about the factors affecting bloom time. Here is another article about research into predicting bloom time.

Excerpt:

“The timing for peak bloom — meaning 70% of buds have emerged — varies each year based on weather conditions that the developing buds are exposed to in January, February and March.

“”‘In order to reach peak bloom, buds need to accumulate a certain number of both cold and warm days, known as ‘growing degree days,’ said Marlee Theil, a UW graduate student in the School of Environmental and Forest Sciences.”

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shrubs and trees to view from below

Are there any lists of shrubs/small trees that are best viewed from below, such as Styrax or Halesia?

 

While there are no lists of shrubs/small trees best viewed from below, there is a list of trees with weeping habits in The Pacific Northwest Gardener’s Book of Lists (Ray and Jan McNeilan, 1997). Many genera of conifers – Cedrus (cedar), Chamaecyparis (cypress), Larix (larch), Picea (spruce), Pinus (pine), and Tsuga (hemlock) – have weeping forms, often indicated by a variety name ‘Pendula’ or ‘Pendulum’. There are weeping birches (Betula), beeches (Fagus), and cherries (Prunus), too.

You are correct about Styrax and Halesia. Additionally, I ran across a few individual species that may be of interest to you as I researched this question:
–Davidia involucrata
–Laburnum anagyroides
–flowering currants, Ribes spp.
–flowering cherry trees, particularly Prunus padus
–various plants in the Ericaceae family have bell-shaped flowers that hang on the underside of the stem.

I would add that any tree which has a naturally graceful branching pattern and/or delicately shaped foliage (such as Japanese maples) would be pleasant to view from below, as well as from other angles.