The Master Gardener Hortline

We answer horticulture questions in an unbiased, research-based manner.


The Linn County Master Gardener Hortline is a free service.


Hortline (319) 447-0647

Summer Hortline HOURS:  March 1st - Oct 31st

  • Monday-Thursday 9:00am-Noon and 1:00pm-4:00pm
  • Friday 9:00-12:00

Winter Hortline HOURS:  Nov 1st - Feb 28th/29th

  • Monday-Friday 10:00-12:00

You can also email the Master Gardeners at

In addition, ISU has resources that can help you at the Horticulture and Home Pest News website ( You'll find frequently asked questions, newsletter, links to publications, and dozens of videos on a wide range of topics. Check it out!


The Master Gardeners: Who are they? How can you become one?  What classes and events are coming up?

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