
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 several 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 more than two decades for publications including Gardening Know How, Hunker, Home Guides, the San Francisco Chronicle and Gardening Guides, as well as publishing two novels. Before focusing on gardening, Spengler had a long career as an attorney and legal writer – experience she now also brings to her role as Gardening Know How’s Gardening Lawyer.
Spengler currently splits her life between San Francisco and the French Basque Country, where she has practised 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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Take Cuttings From These 6 Plants in July and Get Dozens More for Free – Fill Out Your Garden Without Spending a Penny!July is a great time to take cuttings from these wonderful plants and get them rooting well before the fall. Expand your garden in the most budget-friendly way!
By Teo Spengler
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Hotter Summers Are Killing Traditional Hydrangeas – These 6 Gorgeous Alternatives Flourish in the HeatIf your hydrangeas have struggled through recent heatwaves, these tougher plants deliver blooms that rival them while standing up to the heat.
By Teo Spengler
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Every Bird Bath Needs This Easy Tupperware Trick to Keep Birds Happy in Summer HeatYour backyard bird bath is pulling a double shift in this blistering midsummer heat, but keeping it fresh is exhausting. This neat trick slashes your bird bath duties while keeping local birds blissfully chilled
By Teo Spengler
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These 6 Classic Plants Aren't Standing Up to Modern Heat Waves – Here's What to Plant InsteadHeat waves are cooking traditional garden favorites. Here are the classic plants that fail in the heat and the tough, beautiful swaps to plant instead.
By Teo Spengler
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What to Do with Your Lavender in July Heatwaves to Extend the Blooming Season for As Long as PossibleFew summer flowering plants work harder than lavender – but if you want longer-lasting purple sweeps, these simple midsummer tricks will stretch your blooming season
By Teo Spengler
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Is Your Neighbor's Tree Blocking the Sunlight in Your Yard? Here’s What You Can (and Can’t) Do About It, According to a LawyerIf your yard and garden are totally shaded by your neighbor's tree, there are steps you can take to remedy the situation. A former lawyer weighs in.
By Teo Spengler
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5 Easy Ways to Attract Hummingbirds to Your Yard in July – and Help Them Prepare for the Great Migration Next MonthWelcome more hummingbirds to your yard this month before they make the journey south until next summer. Here are 5 simple ways to attract hummingbirds in July.
By Teo Spengler
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Cut Back These 5 Flowers in July to Keep Gorgeous Blooms Coming Through Summer and Into FallA little July trim will ensure your flower garden has bountiful blooms for the rest of the season, plus more nectar for pollinators!
By Teo Spengler
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7 Drought-Proof Container Plants That Stay Lush Through Heatwaves – Even When Everything Else Is WiltingThese resilient container stars shrug off scorching temperatures and dry spells, keeping patios colorful with far less watering than most summer plants.
By Teo Spengler
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These 8 Tiny Patio Plants Attract Pollinators All Summer – Bringing Every Corner to LifeYou don't need a big garden to support bees, butterflies, and other pollinators. These compact patio plants provide nectar-rich blooms all summer.
By Teo Spengler
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Beat the Heat – These 5 Plants Work Like Natural Air Conditioners to Keep Patios Cooler in SummerDon't let a heatwave ruin your outdoor living this summer. Add a few vines to block the sun, airy trees to let the breeze in, and plants that release cool moisture.
By Teo Spengler
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7 Surprisingly Flammable Plants You Should Keep Away from FireworksDon't light the sparklers yet! These plants are sneakily flammable. Keep them away from fireworks (and your house) to avoid an unexpected blaze.
By Teo Spengler
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The Founding Fathers' Favorite Flowers – These 8 Varieties Were Must-Haves in Their Gardens and Should Be in Yours, TooCelebrate America's 250th with the ultimate garden throwback. Here are 8 historic flowers worth growing today.
By Teo Spengler
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What Your Japanese Maple Needs in July for Blazing Color That Lasts All Season – 5 Easy Tasks to Do NowKeep your Japanese maple looking bright and beautiful through the hottest part of summer by doing these simple tasks now.
By Teo Spengler
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What to Do With Your Cherry Trees in July – 5 Easy Ways to Enjoy Sweeter Fruits and Bumper HarvestsSummer is the pinnacle of sweet fruit goodness for cherry growers, so don’t miss out on tasty harvests. Here are the key things to check so you can feast on fabulous cherry flavors
By Teo Spengler
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What Your Azaleas Need Before June Ends – 5 Tasks You Need to Do Now for Beautiful Blooms Next YearDon't wait too late or your azaleas won't have as many blooms next spring!
By Teo Spengler
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How to Propagate Azaleas From Cuttings: Grow Infinite Shrubs Using This Simple TechniquePropagating azalea cuttings is simple, easy to do, and will help you fill out your garden with bold color for free!
By Teo Spengler
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Reasons For Bougainvillea Flower Drop – Learn Why Blooms Are Falling Off Your Vine and What to DoIf your bougainvillea blooms are falling off, the odds are that the plant is not getting proper amounts of one of a few critical elements. Fix it fast.
By Teo Spengler

