Saturday, July 3, 2010
Growing Black Oil Sunflowers
Black oil sunflower seeds are also the kind used for pressing sunflower oil. They seem to be a favorite of the birds around here, disappearing from the feeders before any other variety.
There’s evidence that black oil sunflower seeds have some allelopathic qualities – that is, they discourage growth of some of the other plants around them because of chemical interactions. Gardeners should be aware of this when using large amounts near areas where special plants are growing. I think I’ll be limiting my planting of these seeds to containers and areas that I want keep clean of weeds.