Gardens, Greenhouse, & Master Gardeners

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Availability and Workshops: 

Master Gardeners are generally available at the Lowe Park Greenhouse for questions and/or tours on a regular basis as the schedule indicates below.

Mid-January to Mid-May: Tuesdays, 10 a.m. –12 p.m.                                                           
                                            Thursdays, 6:30-8:30 p.m.

Mid-May-Mid September: Tuesdays, 6:30 p.m.-dusk
                                             Thursdays, 9 a.m.– 12 p.m.

Fall workshops at the Lowe Park Greenhouse 

These are all open to the public. Where required, registration would be through the Linn County Extension and Outreach Office at 383 Collins Road NE, Suite 201, Cedar Rapids, IA 52402. Phone: (319) 377-9839.

Sat. Sept. 30 Swamp Fox Festival 4:30 PM Seed Saving 5 PM tomato/pepper tasting no fee no registration

Sat. Oct. 14 10 AM to noon Forcing Bulbs Demonstration/Workshop materials fee $25.00 registration required

Sat. Nov. 11 10 AM to noon Bow Workshop materials fee $10.00 registration required

Thurs. Dec. 7 6:30 to 8 PM Winter Container Workshop materials fee $20.00 registration required


Master Gardeners are a dedicated group of trained volunteers willing to share their horticulture knowledge, a love of         gardening, an enthusiasm for learning, and a commitment to helping others.

Master Gardeners are members of the local community who take an active interest in their lawns, trees, shrubs, flowers, and gardens. They are willing to learn more and share their knowledge about horticulture. Master Gardeners attend classes taught by Iowa State University Extension staff and specialists.  The program offers 40 hours of instruction that covers topics such as lawn care, flower and vegetable gardening, ornamental trees and shrubs, fruit crops, and houseplants. Training also covers insects, disease, and weed control, soil and plant nutrition, as well as pesticide safety.

In exchange for training, participants are asked to volunteer 40 hours of service back to their local county extension programs by the end of the calendar year following completion of class hours. The type of service done by Master Gardeners includes: educating youth and the community, answering questions on the Hotline, answering horticulture related questions at a booth at public events, and planting demonstration educational garden plots. Once the 40 hours are completed, Interns become Master Gardeners and are then only required to volunteer 12 hours a year plus 6 educational hours a year to stay certified.


Lowe Park GreenhouseThe Lowe Park Greenhouse is a joint project between the City of Marion and the ISU Extension Linn County Master Gardeners. The greenhouse is used as a classroom for educational workshops, growing plants for the Lowe Park demonstration gardens, the Linn County Master Gardener Plant Sale, flowers for the Marion Parks Department & the donation of vegetable plants to low income families who are supplementing their diet with home grown foods, and various other projects.


Children's Discovery Garden SignageThe Linn County Master Gardeners’ Lowe Park Demonstration Gardens and ABC Discovery Garden offer an outdoor plant growing lab. Visit our public outdoor plant learning lab at Lowe Park, 4500 N 10th Street in Marion, Iowa.

Demo GardensTwelve continuously developing gardens are available for public education and enjoyment. The gardens are accessible all day, every day. Take a self-guided tour through the gardens using the Demonstration Garden Brochure available at Lowe Park in the garden mail box (pictured above). Linn County Master Gardeners are available to answer questions regularly on Tuesday evenings and Thursday mornings.