Organic Gardens/Organic Herbicide

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Question
Hi. I am a International Baccalaureate studentand I need help on my science fair project. I am trying to research ingredients for making an organic herbicide. So far the ingredients that I have come up with are not in season. What do you suggest for winter? Also, I am trying to find dandelion plants and seeds and also crabgrass. I'm not sure where I can buy it because I need all the plants to be of similar size in order for the testing to be accurate. Thank you very much!

Answer
You can use distilled vinegar full strength as a herbicide, it will kill anything because it is very acidic, and it is non toxic and organic. You can spray it on or just put it on a plant with an eye droper.  If you do a large area you will have made the soil very acidic and you will have to make in alkaline again by adding some gypsom or soil sulfur to get the balance back to around a pH of 7, which is what most plants prefer.

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Frank and Vicky Giannangelo

Expertise

We will research and answer all questions about organic gardening, soil building, square foot gardening, composting, mulching, planting techniques, sustainable gardening, sustainability, garden design, and how to create a simple reflection pool to attract birds and wildlife. Over the years we have learned that plants respond to the garden's aesthetics, soil conditions, and the attitude of the gardener. The healthier the soil and soul, the healthier the plants become, and are therefore more able to resist insect attacks.

Experience

40 years experience in private and professional organic gardening, creating formal gardens, giving organic gardening workshops, and sharing our insights, both in the Southwest and the Northwest.

Publications
"Growing with the Seasons" a book by Frank and Vicky Giannangelo about their adventures in organic gardening, community, sustainability, and personal growth. Avant-Gardening Tid-Bytes, an online newsletter we published monthly from 2001-2008. The articles are archived on our website.

Education/Credentials
We both have BA degrees. Vicky from the University of Washington, and Frank from the University of Arizona. We have learned by experience, the best teacher...!

Awards and Honors
NM Book Awards. Second place for "Growing with the Seasons" a book by Frank and Vicky Giannangelo about their adventures in organic gardening, community, sustainability, and personal growth.

Past/Present Clients
We are now back in WA state, creating organic display gardens on San Juan Island, WA and will be open to the public for produce, cut flowers, and culinary herbs. Seasonal.

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