Oregon State University Extension Service

Caring for roses and dahlias in Oregon

Roses and dahlias delight flower gardeners, but their care isn't always intuitive. Here's what you need to know to plant, tend and plan a landscape with these beautiful flowers.

Dahlias

Dahlias in Oregon: Planting for a Parade of Late-season Blooms

Learn how to adapt dahlia cultivation to the variety of unique growing conditions found in Oregon.

Carla Stables, Julie Moore, Evie Smith | Feb 2024 | Extension Catalog publication

Dazzling Dahlias Webinar | Growing Oregon Gardeners: Level Up Series (in English)

Recording from April 13th webinar.

Master Gardener™

Fall in love with colorful, dazzling dahlias

Pompoms, collarettes, mignons, waterlilies: The names are as colorful as the blooms they describe.

Kym Pokorny | Apr 2, 2021 | News story

Roses

Roses: Planting and Care in Central Oregon

Are you longing to enjoy the fragrance and color of roses in your yard? With thoughtful attention to planting and care, many types of roses can be grown successfully in Central Oregon.

Amy Jo Detweiler | Apr 2023 | Extension Catalog publication

Controlling Diseases and Aphids on Your Roses

Discusses the most common rose afflictions: black spot, rust, powdery mildew, and aphids. Identifies conditions that favor infection. Offers specific suggestions on how to control these afflictions, as well as a ...

Molly Hoffer, Jay W. Pscheidt, Jack DeAngelis | Aug 2000 | Extension Catalog publication

Fight ‘big four’ rose problems with prevention strategies

There are steps you can take to control black spot, rust, downy mildew and powdery mildew.

Kym Pokorny | Mar 2, 2020 | News story

Landscaping with roses

Selecting roses for landscape use may seem like an impossible task, but with a few key elements in mind, you can select a rose or a group of roses to complement your new or current landscape.

Barbara McMullen | May 2007 | Article

Planting bare-root roses in March

If you have ever purchased a bare-root rose, your first question might have been, will this awkward plant really produce roses? Yes it will!

Barbara McMullen | May 2007 | Article

Feb 2024
flower garden
Source URL: https://extension.oregonstate.edu/collection/caring-roses-dahlias-oregon