What do you get combining abundant water from the Umpqua River and warm sunny days with cool nights? A wonderful place to grow high quality tree fruit, winegrapes, berries and melons. Our mild winter temperatures also allow gardeners to grow a wide variety of ornamental plantings. Most of the 100 Valleys of the Umpqua have either a zone 7 or 8 USDA plant hardiness rating. 

The Horticulture Agent serves many industries including  . .  Vineyards and Wineries  . .  Tree Fruit  . .  Vegetable  . .  Nursery  . .  Christmas Tree  . .  Home Horticulture.  For more information, e-mail Steve Renquist, OSU Extension Horticulture Agent, or call 541-236-3047.      

Items of interest

Master Gardener Program

Graduates of a 66-hour training program, Master Gardeners help diagnose insect and disease problems for homeowners and non-commercial gardeners, teach classes on a variety of gardening topics, maintain demonstration gardens, and assist with research projects.  Click here to find more information about the next Master Gardener Training Class.

Plant Clinic Schedule

Call 541-236-3052 or visit the Extension Service Office.



1-4 p.m.


Monday & Wednesday

1-4 p.m.


Monday, Wednesday & Friday

1-4 p.m.

April through September

Monday through Friday

1-4 p.m.


Monday, Wednesday & Friday

1-4 p.m.


Monday & Wednesday

1-4 p.m.



1-4 p.m.

Extension Plant Clinic Information

If you have questions about gardening, orchards, landscaping, composting, garden insects, plant diseases, or related topics, call 541-236-3052 or visit the Extension Office. If you'd like us to diagnose a plant disease, bring a sample with you. Our plant clinic schedule varies by month.

Douglas County Master Gardeners   Ph:  541-236-3052
OSU Extension Service     Front Office Ph: 541-672-4461
1134 SE Douglas Ave  /  P.O. Box 1165
Roseburg, Oregon  97470


Umpqua Valley Hort News

Written by Steve Renquist, Extension Horticulture Agent in Douglas County.

Local Publications

OSU Publications

OSU Garden Periodicals

Educational Events

  • Master Gardener Training
    The next Master Gardener Class begins in January. Registration/enrollment begins in late September. If you want to receive the application for the next Master Gardener Training in Douglas County Oregon, please send an email to douglas.extension@oregonstate.edu  with your name, mailing address/city/state/zip and email address.
    Or, call the Horticulture Secretary at 541-236-3039 if you have questions. 
  • See our Calendar of Upcoming Events of future classes. 

Related Links and Websites

Diagnostics Information

Plant Information

Pesticide Information Soil Information
Commercial Crop Information OSU Department of Horticulture

Oregon Department Agriculture





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