Topic: Rainwater Harvesting
Speaker: Al Prescott, Bluebonnet Master Gardener
Registration at 11:50 am – 12:05 pm
Program from 12:05 pm – 12:50 pm
Free to the Public! Light refreshments provided. Bring your lunch and learn!
By Faye Beery, Bluebonnet Master Gardener Assocaiton
That is how long the Master Gardener program has been going in our 4 county region. On May 25, 2021 the Bluebonnet Master Gardeners celebrated our 20th anniversary of the demonstration garden in Austin County. While the weather was not the best, everyone enjoyed the program given by Dr. Shackelford, good food and seeing the Bluebonnet Master Gardener Association’s demonstration garden located at the Sens Acitvity Center in Bellville, Texas. Vegetables were available, most gave a voluntary donation to the garden, as well as some produce was avaialbe to pick in the garden.
A big attraction in the garden was the keyhole garden. The keyhole concept was first introduced into arid African regions by the U.K. organization Send a Cow. The idea was to help poor families grow their own food despite the poor soil and drought conditions. The keyhole concept is a raised circular bed with a wedge shaped cutout on one side which allows persons easy access to the whole bed. When seen from above, it resembles a lock and keyhole. In the center is a wire cage for compost which decomposes and provides nutrients to the bed. This form is less labor intensive and more affordable for people who want to grow their own food. And you don’t have to bend over.
The outer structure can be any sturdy material, cinder blocks, bricks, rocks are a good choice. They are placed in a round design with a wedge on one side so that individuals can reach the middle as well as the outsides allowing for easy planting and harvesting. The wire cage in the center makes it easily accessible to place the compost materials.
A strong advocate of the keyhole concept is Deb Tolman, PhD, from Clifton, Texas. She is an environmental scientist and landscape designer and co-founder of the Silo Project a non-profit organization, which is centered on sustainability. Due to her outreach and workshops, there are more than 70 keyhole gardens in Clifton, which is in arid North Texas. She recommends a 3:1 ratio of brown and green material which forms the core garden. Decomposition rapidly generates heat and breaks down the material to feed plants. Brown material includes brown grass/leaves; paper and wood, straw, sawdust, lint from the dryer or vacuum, and lots of cardboard, which is the first layer in the bottom of the bed. It should be thoroughly wet to begin decomposition. Green materials include kitchen scraps, manure, green grass/leaves, or plants. Her website provides instructions on how to construct a keyhole garden. Follow the link to her Field Guide PDF .
There is also a new addition to the garden which is currently under construction this week. It is Pete and Paula’s pollinator patch. They plan to include plants which attract pollinators to the garden to pollinate the vegetables that grow there. We’ll have more on this when they begin planting.
I know everyone is happy to get back to our regular meetings. See you at the next one!
by bluebonnet
Master Gardener Paul McClendon was presented his certification in Rainwater Harvesting from the Texas Master Gardner Association at the Bluebonnet Master Gardener Association’s monthly meeting May 28, 2019 in Bellville, Texas. After attening the Rainwater Harvesting training class, Paul volunteered 20 hours to assist AgriLife Extension Service increase citizens’ awareness of rainwater harvesting. These 20 hours of volunteer service were on top of the annual 20 hours of volunteer time all Bluebonnet Master Gardener Association members are required to perform each year. Paul is a member of the Bluebonnet Master Gardener Association serving Austin, Colorado, Fayette & Washington Counties, Texas.
Other BMGA members with Rainwater Harvesting Advanced Training certification include B.R. Koehler and Charlene Koehler, both of Sealy, Texas.
See a complete list of BMGA members with Advanced Training certifications.
Other topics in which Master Gardeners in Texas may gain advanced training certification are:
by bluebonnet

Planters & rainwater harvesting barrels made from re-purposed food production barrels
Under Master Gardener Pete Berckenhoff’s leadership, the Bluebonnet Master Gardener Association, built rainwater harvesting barrels and planters by re-purposing plastic food production barrels. Pete’s group of Master Gardener volunteers gathered at BMGA member Renee Kofman’s warehouse in Sealy and turned it into a busy production workshop for building the barrels and planters. These rainwater harvesting barrels are designed to collect roof rainwater run-off through a homeowner’s gutter downspout. Although the collected water is not suitable for drinking water, it is great for watering plants, gardens and adding water to your compost pile. Planters are available with a lightweight PVC frame or the wooden frame and are counter-top height.
BMGA will sell the rainwater harvesting barrels and planters until supplies last at its annual Spring Plant Sale in Sealy on April 14, 2018. The Plant Sale is one of BMGA’s two Texas Sales Tax Free events this year so during that event, the barrels and planters are sale tax free.

Cutting PVC for the planters

Inserting the planter barrel into the sturdy wooden frame