| Article | Author | Publish Date |
| Hardy 'African Violets' - Ramonda, Haberlea and Jankaea | Todd Boland | January 29th, 2011 |
| Hardy Euphorbias in the Garden - An Untamed Passion for 'Shrubby Spurges' | Debra Corrington | December 27th, 2012 |
| Hardy Hibiscus--Hardier Than You Think | Lee Anne Stark | January 18th, 2013 |
| Have a Party in your Garden with Balloon Flowers! | Todd Boland | August 8th, 2009 |
| Heaths and Heathers for USDA Zones 4-6 | Todd Boland | February 9th, 2014 |
| Heaven in the Garden: Blue Flowers and Plants | Gwen Bruno | November 1st, 2010 |
| Heavenly Hellebores! | Victor Carrano | February 20th, 2012 |
| Heirloom Peonies | Donna Mack | June 3rd, 2018 |
| Helenium, Nothing to Sneeze At!!! | Lee Anne Stark | July 17th, 2014 |
| Herbs for the Bath | Karen Jones | July 30th, 2008 |
| Here's Flowers For You: a Shakespeare Garden | Gwen Bruno | August 31st, 2009 |
| Heucheras: A conversation with Heuchera breeder Dan Heims | Terri N. Lewin | June 13th, 2012 |
| Hibiscus - Native, Hardy, and Tropical | Mitch Fitzgerald | August 5th, 2008 |
| Hollyhock, the Hibiscus' Cousin | Adina Dosan | May 25th, 2012 |
| Hostas: It's not Always About the Leaves | Larry Rettig | May 18th, 2012 |
| Hot New Heucheras will Sizzle in your Garden! | Debra Corrington | February 15th, 2013 |
| How peculiar: A green flower | Susanne Talbert | June 21st, 2010 |
| How to Grow Hops in Your Backyard | Tricia Drevets | August 17th, 2016 |
| How to Grow Pantone's Color of the Year in Your Garden | Carole Menser | September 1st, 2020 |
| How to Grow Penstemon (Beardtongue) | David Salman, High Country Gardens | March 31st, 2012 |
| Hummingbird Magnet: Coronado Hyssop | Diana Wind | August 22nd, 2014 |
| Hybridizing Daylilies- Child's Play | Michele Meyer | July 20th, 2008 |
| Incredible Edible Flowers | Paul Rodman | February 11th, 2014 |
| In with the old... Pulmonaria | Jeannette Adams | April 4th, 2011 |
| Irresistible Chocolate Garden Color | Diana Wind | April 4th, 2009 |
| Is it my Fault or is it the Plant? A Guide to Perennial Longevity | Larry Rettig | June 9th, 2009 |
| Is This Plant the New Hosta? | Larry Rettig | June 18th, 2014 |
| Jacob's-Ladder, Greek Valerian and Sky Pilot - Welcome to the Genus Polemonium! | Todd Boland | January 31st, 2009 |
| July's Birth Flowers are the Larkspur and Water Lily | Carole Menser | July 1st, 2021 |
| Keep Your Garden Constantly in Bloom for Everyday Beauty | Dawn Hammon | March 4th, 2019 |
| Knowing the Degree of Difficulty When Starting Flowering Plants from Seed: A Beginner's Reference | Larry Rettig | January 30th, 2013 |
| Last Ride of the Silver Sage | Tamara Galbraith | June 17th, 2013 |
| Late Bloomers: Perennials for Your Autumn Garden | Gwen Bruno | October 15th, 2012 |
| Late Bloomers Too: More Perennials for Your Autumn Garden | Gwen Bruno | October 22nd, 2012 |
| Lavender Wands: Make Magical Scented Decorations for your Home | Jill M. Nicolaus | July 20th, 2008 |
| Lespedeza: A Lollapalooza in the Garden | Larry Rettig | July 23rd, 2009 |
| Lessons from a lavender farm: Growing, harvesting and using lavender blooms | Jill M. Nicolaus | November 6th, 2008 |
| Less Well-Known Bellflowers for the Border | Todd Boland | November 7th, 2009 |
| Let It Snow, Let It Snow, Let Me Sow: Plant Seeds Outside Now for Natural Cold Stratification | Sally G. Miller | January 9th, 2013 |
| Liatris: Blazing Star of Prairie and Garden | Gwen Bruno | August 3rd, 2012 |
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