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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5 Plants You Should Never Prune in October – Or You Risk Ruining a Gorgeous Winter Display & Next Year's BloomsPut down the pruners! It's best to leave these plants alone in fall. Here are 5 plants you should never cut back in October.
By Teo Spengler
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Want More Privacy Next Year? Plant These 6 Beautiful Hedges This Fall for Natural Screening From Prying EyesKeep nosy neighbors out of your yard next year by planting these hedges now. Try one of these stunning native options for easy elegance and added privacy.
By Teo Spengler
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Watch Your Garden Drainage This Fall – A Lawyer Explains How These Common Mistakes Might Make You Liable for Your Neighbor’s Flooded YardSomething as small as a new garden path could spell disaster for your neighbor during a storm. Don't get caught out in the rain with these drainage mistakes!
By Teo Spengler
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If Hydrangeas and Blueberries Thrive in Your Soil, Plant These 5 Acid-Lovers in September for Vibrant Blooms & Berries Next YearAcidic soil can either be a big benefit or a major challenge for gardeners. If your soil has this unique characteristic, grow these plants for beautiful blooms.
By Teo Spengler
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These 5 Trees Grow Beautifully in Containers, and September Is the Perfect Time to Plant ThemDon't have yard space for full-sized trees? No problem! Now is the perfect time to plant trees in containers.
By Teo Spengler
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5 Self-Sowing Flowers That Bloom in Fall – for Easy Autumn Color That Returns Year After YearSelf-sowing flowers are easy wins for the garden. They come back every year on their own and these fall-blooming species add color until the first frost.
By Teo Spengler
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Forget Mums! These 5 Low Maintenance Container Combos Bring Fresh Curbside Color that Lasts Through FallWhy go for the predictable potted options? If you want easy fall wins for pots, these gorgeous drought-tolerant combinations will dazzle all season long. Move over, mums!
By Teo Spengler
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Can You Take Seeds From Public Plants? The Legal Rules Gardeners Should Know Before Pocketing Seed PodsHarvesting seeds is an economical way to grow your garden, but is it illegal to collect seeds from public spaces?
By Teo Spengler
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Every Garden Needs One Autumn Plant Bees & Butterflies Can’t Resist – Grow These 5 Pollinator Magnets for an Unforgettable Fall FeastPollinators won't be able to resist these fall-blooming flowers! Give bees, butterflies, and hummingbirds one final farewell feast with these autumnal beauties.
By Teo Spengler
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Bye Bye, Boxwood – These 6 Lollipop Evergreens Will Give You Year-Round Curb Appeal Even in Small SpacesBox is the standard choice for adding easy green shape to borders, but there are some cute new evergreen darlings on the block that can really make your curbside pop…
By Teo Spengler
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Gardeners Are Replacing Tired Flowers With These 5 Gorgeous Prairie Plants That Shine in FallFall beds don't have to be boring! Add color and beauty with prairie plants who put on their best show in the fall.
By Teo Spengler
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What Backyard Birds Need in September – 6 Easy Ways to Help Them Through FallKeep wild birds flying high by making your backyard a reliable source of food, fresh water, and shelter as natural resources begin to change.
By Teo Spengler
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Don't Cut Back These 5 Perennials Too Soon! They Add Multi-Season Interest, If You Leave Them Alone in FallNot pruning these perennials actually makes your garden look better. Drop your pruners and wait until spring to keep your garden interesting all fall and winter.
By Teo Spengler
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Why Are My Dahlia Flowers Fading in September? Fixing Late-Season Bloom DropAre your dahlias losing their zing long before the first frost? It doesn't have to be this way! Here's how to keep them blooming strong all summer long.
By Teo Spengler
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Don't Get in Trouble Planting a Hedge on a Property Line – A Lawyer Explains How to Steer Clear of the LawA hedge provides wonderful privacy and supports local wildlife, but there are some guidelines that you need to follow before you plant.
By Teo Spengler
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6 Plants You Should Prune in September for a Tidy Fall Garden – Plus, Which Plants You Should LeaveA little garden cleanup in September can keep things tidy, but be sure not to prune some plants or you'll ruin blooms next spring!
By Teo Spengler
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5 Fast-Growing Fall Flowers for Containers That Dazzle From the End of Summer Until the First FrostThese gorgeous fast-growing fall flowers make containers shine from now until the autumn turns into winter.
By Teo Spengler
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Every Garden Needs One Plant That Makes A Border Look Expensive – These 6 Add Wow Factor With Almost No EffortElevate your borders from ordinary to extraordinary without breaking a sweat or forking out a fortune. These statement plants deliver instant curb appeal and designer elegance without the hassle
By Teo Spengler

