Close up of pink double petaled fancy dahlia flowers.

Dahlias

The dahlia is a perennial flower that’s been around for centuries. It was first cultivated in Mexico, and has since spread to the rest of the world, making it one of the most popular garden flowers. Original grown by the Aztecs for it’s edible tubers, dahlia plants are now enjoyed for their giant colorful, pinwheel flowers that bloom from July into autumn. Want to start growing your own? Use our guides down below to get started. Happy gardening!

When and How to Water Dahlias

A close up horizontal image of bright pink dahlias in full bloom in the late summer garden pictured on a soft focus background.

Dahlia flowers are the stars of the late season garden, with colorful blooms that may be size of dinner plates. These frost-tender perennials prefer rich, moist, well-draining soil, but oversaturation can destroy their tuberous roots. Learn when and how to properly water dahlias in this guide. Read more now.

How to Identify and Manage Powdery Mildew in Dahlias

A close up horizontal image of the foliage of a dahlia plant suffering from powdery mildew.

Powdery mildew is a common problem for many different species in the garden, including dahlias. It causes distorted leaves and flowers, stunted growth, and coats the plant in a powdery white or gray spore that makes it look downright ugly. Learn how to identify and deal with this disease in this guide. Read more now.

How to Identify and Manage Dahlia Mosaic Virus

A close up horizontal image of colorful dahlias growing in the garden pictured in bright sunshine.

Dahlia mosaic virus causes unusual symptoms on your plants, including stunted growth, distorted leaves and flowers, and funky yellow or light green patterns on the leaves. Sadly, it has no cure, but you can manage or even avoid it. Learn how to identify this disease and prevent it in this guide. Read more now.

27 of the Best Dahlia Varieties for Your Garden

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Dahlias are unmatched for their range of flower types and brilliant colors in the late summer garden. Some have perfect symmetry, others are wild and shaggy or delicate and demure, and they all make superb cut flowers. Discover 27 of the best dahlia varieties to grow at home in this guide. Read more now.

How to Overwinter Dahlias

A close up horizontal image of pink dahlias growing in the garden with foliage in soft focus in the background.

A colorful mainstay in the late summer garden, dahlias add a steady supply of bright, beautiful flowers until they’re killed by frost. After that, they can be overwintered as perennials in the right conditions or lifted and stored to be cultivated as annuals. Learn how to overwinter tender dahlias now in our guide.

Why Dahlias May Fail to Bloom (And What to Do About It)

A close up horizontal image of 'Labyrinth' dahlia flowers growing in the garden pictured on a soft focus background.

Dahlias are so beautiful that it’s even more frustrating than usual when they don’t blossom. Common causes can be the wrong light, water, or feeding routine, but pests or disease issues may also lead to flowering failure. Learn nine common reasons why dahlias fail to bloom and how to deal with them.

Tips for Growing Dinnerplate Dahlias

A close up horizontal image of dinnerplate dahlia flowers growing in the garden pictured on a soft focus background.

If you want a flower that’s so eye-catching it’s impossible to ignore, dinnerplate dahlias are truly unmatched. The blossoms are positively huge, with fascinating whorls of petals in colors ranging from white to fuchsia to nearly black. Learn how to grow these massive, beautiful blooms in this comprehensive guide.

How to Grow Dahlias in Pots and Containers

A horizontal image of a row of potted dahlias on a concrete path with a wooden fence in the background.

Don’t have a big area to plant your dream dahlia garden? No problem, grow your dahlias in containers. These cottage garden favorites lend themselves nicely to potting so you can enjoy their incomparable beauty even if you’re short on space. This guide explains how to plant and care for dahlias in pots. Read more now.

How to Propagate Dahlia Stem and Tuber Cuttings

A close up horizontal image of brightly colored dahlias growing in a sunny garden.

There are over 50,000 different varieties of dahlia, from peony to pom-pom. If you’re a fan, you can never have enough. Taking cuttings is an easy way to turn one tuber into five, ten, or even more plants, all for free. Check out our guide to successful dahlia propagation from cuttings. Read more now.

Prevent Dahlias from Falling Over: Support Options for Your Plants

A close up horizontal image of pink pom pom dahlias growing in the garden pictured on a soft focus background.

Dahlias are a summer delight, their tall stems supporting a rainbow of flowers, from the symmetrical perfection of the pom-poms to the double blooms of the spiky cactus type. However, they need some support to look their best. We’ll go over the best ways to stake your dahlias in this guide. Read more now.

How and When to Divide Dahlias

A close up horizontal image of red and white bicolored dahlias growing in the late summer garden pictured on a soft focus background.

One of the happy bonuses to growing dahlias is all the free plants you get when you spend a little time processing the tubers in fall or spring. Find out the basics of how to successfully dig and divide dahlias, including the best time of year, the important parts of the tuber, and why sharp tools are crucial. Read more.

How to Identify and Control Dahlia Pests

A close up horizontal image of orange dahlias growing in the late summer garden pictured on a soft focus background.

Dahlias, with their luscious summer color, are blooms gardeners look forward to. It’s crushing if pests get to them before you can enjoy them. Sadly, quite a variety of pests like to snack on dahlias. Check out this guide to learn all you need to know about these common pests and how to deal with them. Read more now.

19 of the Best Flowering Companion Plants for Dahlias

A horizontal image of a colorful garden border with dahlias and a variety of other flowering companions.

Tuberous flowering dahlias light up midsummer to autumn gardens in bold shades ranging from pink and purple to yellow, orange, and red. Read on to learn about 19 flowering companion plants that share the same cultural requirements for soil, sun, and water, and get your beds and borders ready for a spectacular display.

Dahlia Flower Types: A Guide to Groups and Classification

A close up horizontal image of a number of different types of dahlia flowers.

Dahlias are bright, beautiful flowers that are much loved in the late season garden. And with such a marvelous selection of colors, forms, and sizes to choose from, deciding which type is best for your garden can be tough. Learn about the different types of dahlias and how they are classified in this guide. Read more now.

How to Grow Delightful Dahlias: A Late Summer Standard

A close up horizontal image of a garden filled with late summer blooming dahlias in a variety of different shapes and colors.

Looking for reliable, bold color for the late season garden? Delightful dahlias are a perfect fit. From dwarf cultivars to jumbo dinner plates, and in almost every imaginable color, these dazzling tubers flower consistently from summer until they’re felled by frost. Read all about how to plant and grow dahlias now.

How to Lift Dahlias for Winter Storage

A close up horizontal image of a variety of dahlia flowers in a garden border pictured in light sunshine on a soft focus background.

Dahlias are spectacular, long-lasting flowers that add reliable color to the late season garden. But these plants are frost tender and don’t like wet feet. They need to lifted for winter storage and benefit from having their tubers divided in spring. Learn how to lift and store your dahlias during winter in this guide.