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


May Garden To-Do List  

Mums: Pinch back mums to promote full, bushy plants and promote more blooms.

Water: Keep plants well-watered if rain is insufficient.

Fertilize: Establish an organic fertilizing plan for roses.  Reapply every 4-6 weeks.

Plant: Plant tomatoes when soil temp reaches 50 degrees.  Plant beans and warm weather crops around mid-month.  Transplant young rooted dahlias from indoors at 2-3 foot intervals.  Install supports as necessary.

Birds: Place humming bird feeders outside.  Change liquid and clean weekly.

Weeds: Continue weeding before they get away from you.  Use mulch liberally and reapply as necessary.

Compost: Turn the compost pile and make sure it does not dry out.

Prune: Prune spring shrubs (forsythia, viburnum, crabapple, etc.) after they finish blooming.

Plant Supports: Insure plant supports/stakes are in place for tall perennials like delphiniums and peonies.

Lawn: Reseed bare spots.  Mulch as necessary and keep area well watered.

Bulbs: Plant warm season bulbs like cannas and gladiolas.

Lilacs: When lilacs finish blooming, remove faded blooms and prune as necessary.  You may remove up to one-third of the branches each year.

Herbs: Plant herbs outdoors in a sunny location.  Use containers/pots as necessary.

Houseplants: Move houseplants outside when frost danger has passed.  Inspect daily to insure they do not dry out.

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