Master Gardeners

In 2003, Warren County held its first Master Gardener program. Since that time, the Master Gardeners have taken on several community projects. One of those projects include maintaining the landscaping and grounds around the Schowengerdt Historical Home in Warrenton. 

photo: Schowengerdt Historical Home

Schowengerdt Historical Home in Warrenton,
a Master Gardener project

Master Gardeners are individuals who enjoy learning and sharing their gardening knowledge with others. There are no prerequisites to participate in Master Gardener training, except to have an interest in gardening, a willingness to learn and a desire to give back to local communities through volunteer service and education.

After completing training, Master Gardeners expand the reach of University of Missouri Extension using research-based horticultural information to answer gardening questions in their local communities.

We are proud to announce that the Master Gardener training course is now available online at:


Train online to be a Missouri Master Gardener


April Garden To-Do List  

Prepare to Prune. Cut back butterfly bushes to six inches above soil line. Hint - branches of butterfly bushes make excellent plant supports or row markers.   

Cover Up Bald Spots. Rake debris from the lawn, over seed any bare spots or thin areas.

Support Your Plants. Place growth supports next to top-heavy plants such as peonies and dahlias.  

Move Over Mulch. Remove winter mulches from plants and strawberries as temperatures rise, but keep it close by in case of late frost.  

Oil Check. Spray shrubs with dormant oil spray to control insects and scale that survived the winter.  

Happy Arbor Day. Plant a tree or better yet get some kids involved and plant a tree at a school or park  

Shake Up Your Compost. Give your compost pile a good mixing.   

Use Lint. Place clothes dryer lint and short pieces of string on trees and shrubs to aid birds in their nest building.  

Don't Forget to Deadhead. Deadhead spring flowering bulbs as blooms fade. Leave foliage until it turns yellow or brown.  

Cool Crucifers. Continue to plant cool season crops such as cabbage, collards, chard, carrots, broccoli and lettuce.  

Fertilize Organically. Fertilize woody ornamentals with a good organic fertilizer.  

Prune Grapes. Prune grapevines; remove dead or weakened vines as necessary. Repair arbors or other supports as needed.  

Plant Bare Root Roses. When planting, place a handful of bone meal in the hole. Mound the soil up around the plant to one inch of the top. Remove the soil as new growth appears. In addition to roses, onion sets, lettuce and spinach may be directly seeded into the garden during April. 

For any questions please contact the Warren County Extension Center 636-456-3444