Poweshiek County Master Gardeners of Iowa

04/05/2026

Need plants for your garden this year?

You’re in luck! Master Gardener plant sales are right around the corner. These sales are a great place to find a wide selection of perennials, vegetables, herbs, and more.

Mark your calendars:
April 18 – Oskaloosa, Altoona
May 1 – Storm Lake, Bloomfield
May 2 – Winterset, Adel, Marengo, Urbandale, Bloomfield, Burlington
May 5 – Orange City
May 8 – Marion
May 9 – Atlantic, Muscatine, Marion, Decorah, Manchester, Marshalltown, Dubuque, Fayette, Maquoketa, Newton, Council Bluffs, Iowa City
May 16 – Oskaloosa, Waukon, DeWitt, Clinton
May 17 – Clinton

Check out our website for full details, times, and locations on our events calendar!
https://www.extension.iastate.edu/mastergardener/events

11/13/2025

03/10/2025

Great reminder as we start looking at getting seeds started for our garden projects.

Disease-causing organisms and insects can be spread from uncleaned plant containers and pots to new plants potted in them.

Cleaning and disinfecting plant containers is an essential gardening routine. Either soak the containers in a 10% bleach solution for 10 minutes or wipe or spray the inside and outside of containers with 70% rubbing alcohol. More information: https://go.iastate.edu/MI0B8P

ISU Extension and Outreach - Agriculture and Natural Resources Iowa Master Gardeners Iowa State University Extension and Outreach

02/21/2025

Join ISU Extension next weekend to learn all about native plants in Iowa!

01/12/2024

We got some much-needed snow in central and eastern Nebraska this week, so it's a good time to repost this helpful graphic, especially if you're wondering if snow actually provides useful moisture for trees.

As NSA Sustainable Landscape Specialist Sarah Buckley explains, many variables affect the ratio of liquid water to snow. For example, the warmer it is, the less snow is needed to make an inch of water. The colder it is or the windier it is, the more snow needed. It all comes down the size and number of ice crystals in the snow. A good rule of thumb is illustrated in this graphic: 12-14 inches of light, fluffy snow make about 1 inch of water, while 10-12 inches of heavy, wet snow is needed to make 1 inch of water.

So, bottom line: even after the snow melts, continue to water newly planted trees once a month or so (two gallons at a time) -- but wait until the temperature gets above freezing!

01/08/2024

Upcoming ISU Master Gardener Home gardening webinar series. To register: Zoom Registration Link: https://go.iastate.edu/DJVLKYwww.extension.iastate.edu/mastergardener

12/06/2023

For the first time since 2021, the USDA has updated the Garden Zone Map. Make sure to see if your area has updated. Census is saying we are warming up some.

The USDA has just updated its map of gardening zones for the first time since 2012, sending American gardeners rushing to the Internet to find their zone. (Online is the only way to get the information, the days of printed maps are over.) For a lot of us, community gardeners included, it’s a big d...

11/29/2023

Bee Keeping classes return to Mahaska County in 2024! But not at the Extension office - now being held at Mahaska County Conservation. Call Jim or Tina for more information.

05/12/2023

04/28/2023