
Teo Spengler
Raised in Alaska, where the sun never rises in the winter and the trees are stunted by permafrost, Teo Spengler fell in love with plants when she moved to California for college. Gardening became more of a passion than a pastime, as she studied horticulture and took master gardening courses. Spengler completed an intensive sixteen-week program to qualify as a docent at the San Francisco Botanical Garden and has given public tours there for some years. She has also earned a BA in politics, an MA in English, an MFA in creative writing, and a JD from Berkeley Law School. She has written about nature, trees, plants, and gardening for 20 years for a variety of websites including Gardening Know How, Hunker, Home Guides, San Francisco Chronicle and Gardening Guides as well as publishing two novels, following a long career as an attorney and legal writer. Spengler currently splits her life between San Francisco and the French Basque Country where she has practiced her skills in both personal and public gardens for the past two decades. Her extended family includes some 30 houseplants and hundreds of outdoor plants, including 250 trees—mostly oaks, birches and beeches—that she planted on her land in France.
Latest articles by Teo Spengler
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Your Birth Month Has a Fruit Tree! Find Yours & Plant It This Fall for a Sweet Harvest
What delicious fruit does your birth month have in store for you? Find out what your fruit tree is and get growing!
By Teo Spengler
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Building a Fence? Here's What You Need to Discuss With Neighbors So You Don't Cross a Line
Do you need to talk to your neighbors about building a fence? It' s good to get neighborly buy-in before a fence installation. Learn how to navigate the topic.
By Teo Spengler
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Hydrangea Meaning: The Fascinating Symbolism Behind One of the World's Most Popular Flowers
Explore the rich symbolism of hydrangeas, from their Greek name ("water vessel") to their conflicting meanings in Japan and Europe.
By Teo Spengler
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This Knockout Native Gives Dreamy Clouds of Color and Year Round Beauty – How to Grow the American Smoke Tree
Set your ornamental garden ablaze with the dramatic fall foliage and smoky blooms of this cracking native. Find out how easy it is to grow the unforgettable American smoke tree
By Teo Spengler
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So You're Trying to Grow Organic, But Your Neighbors Use Chemicals – Here’s How to Keep Your Garden Green & Avoid Drama
You grow a pristine organic garden, but your neighbor sprays every weed with chemicals. Here's the right way to talk to them, plus tips to protect your plants.
By Teo Spengler
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Want to Grow More Trees and Shrubs for Free? Collect These 7 Seeds Now to Plant in Spring
Grow more of your favorite trees and shrubs for free by collecting seeds now to sow next spring. Here are the 7 best species to collect.
By Teo Spengler
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8 Must-Have Japanese Maple Varieties for Gorgeous Foliage This Fall
If you want stunning fall foliage and year-round interest, these 8 types of Japanese maples are sure to make your garden shine.
By Teo Spengler
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5 Best Ways To Get Rid Of Leaves Without A Rake – Quickest & Easiest Leaf Clean Up Methods To Try This Fall
Don't hurt your back raking leaves this year. Try a tree expert's favorite leaf clean up methods and hang up the rake for good.
By Teo Spengler
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I’m a Tree Expert – Here Are 7 Landscaping Rules I Always Follow Around Trees (and the Mistakes I Avoid)
Work with your trees, not against them. Follow these 7 simple dos and don'ts to craft a landscape that keeps you both happy.
By Teo Spengler
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Neighbor’s Weeds Taking Over Your Garden? A Lawyer Shares Expert Tips on How to Talk to Neighbors & What You Can (and Can't) Do
We all want to get along with our neighbors, but what if their weeds are creeping into your pristine beds? Here's how to handle a potentially prickly situation.
By Teo Spengler
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7 Deer-Resistant Spring Bulbs That Keep Your Garden Safe from Grazing
These bulbs stand the best chance against hungry winter deer. Plant them this fall for a beautiful spring.
By Teo Spengler
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Should You Leave the Leaves This Fall? Why Leaf Litter Could Actually Help Your Yard (And When to Bag It Up)
Before you grab your rake for the big fall cleanup, read this: you might find it’s better for your garden to leave the leaves. Here’s how to get leaf litter working for you
By Teo Spengler
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These 4 Fall Flowering Trees Add Sublime Color and Showy Splendor to Any Yard
Autumn color is generally associated with vivid leaf tones – but you won’t regret saving some space for late-year bloomers. Here are 4 gorgeous fall flowering trees
By Teo Spengler
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As a Tree Expert, I Always Do These 4 Things for Stunning Fall Color on Japanese Maples – and Never Make These 2 Mistakes
If you want to guarantee the most dazzling displays with a Japanese maple in fall, here are 4 key things to do to guarantee success – and 2 things you need to avoid
By Teo Spengler
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Using a Leaf Blower Too Early Doesn't Just Bother Neighbors, It May Be Against the Law – Here's How to Avoid Trouble
Be a kind and courteous this fall. Don't blow leaves outside of these hours to keep neighbors happy and keep yourself out of trouble.
By Teo Spengler
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Signs a Tree or Shrub Isn't Happy – And How to Move It to a Better Spot
Does your tree or shrub look unhappy? Maybe all it needs is a change of scene.
By Teo Spengler
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NPK Demystified – Here's What the Numbers on Your Fertilizer Really Mean
NPK refers to the three macronutrients all plants need: nitrogen, phosphorus, and potassium. Learn all about NPK in fertilizer here.
By Tyler Schuster
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Don’t Miss Your Chance! This Is the Last Possible Time to Fertilize Your Lawn in Fall Before It’s Too Late
Don't let the best time to fertilize your lawn get away from you.
By Teo Spengler

